Helps with #7853 : Select objects by RepresentationType from panel

Clicking the RepresentationType label in the Representations panel selects all visible objects whose active representation matches that type. Ctrl+Click broadens the selection to any object that has the type in any of its representations, whether currently active or not. Generated with the assistance of an AI coding tool.
2026-08-07 00:11:36 +00:00 · 2026-04-07 10:10:42 -05:00
236 changed files with 2778 additions and 21887 deletions
@@ -1,95 +0,0 @@
-#!/usr/bin/env -S uv run
-# /// script
-# dependencies = [
-#     "PyGithub",
-#     "requests",
-# ]
-# ///
-
-import os
-from pathlib import Path
-
-import requests
-from github import Github
-from github.GitReleaseAsset import GitReleaseAsset
-
-EXTENSION_ID = "bonsai"
-CURRENT_PYTHON_VERSION = "py313"
-CURRENT_PLATFORMS = ["linux-x64", "macos-arm64", "windows-x64"]
-
-
-def publish_asset(asset: GitReleaseAsset, token: str, repo_root: Path) -> None:
-    """
-    Publish an asset to Blender Extensions.
-    Reference: https://extensions.blender.org/api/v1/swagger
-    """
-    temp_path = repo_root / asset.name
-
-    response = requests.get(asset.browser_download_url)
-    response.raise_for_status()
-    temp_path.write_bytes(response.content)
-
-    url = f"https://extensions.blender.org/api/v1/extensions/{EXTENSION_ID}/versions/upload/"
-    headers = {"Authorization": f"Bearer {token}"}
-
-    files = {"version_file": temp_path.read_bytes()}
-    response = requests.post(url, headers=headers, files=files)
-    response.raise_for_status()
-
-    temp_path.unlink()
-
-    print(f"✓ Published {asset.name}")
-
-
-def main() -> None:
-    token = os.getenv("BLENDER_EXTENSIONS_TOKEN")
-    if not token:
-        raise Exception("BLENDER_EXTENSIONS_TOKEN environment variable not set")
-
-    # Get the repository root
-    repo_root = Path(__file__).parent.parent.parent
-
-    # Read VERSION file
-    version_file = repo_root / "VERSION"
-    version = version_file.read_text().strip()
-
-    print(f"Current VERSION: {version}")
-
-    tag_name = f"bonsai-{version}"
-
-    # Get release from GitHub
-    gh = Github()
-    gh_repo = gh.get_repo("IfcOpenShell/IfcOpenShell")
-    release = gh_repo.get_release(tag_name)
-
-    assets = release.get_assets()
-
-    asset_platform_map: dict[str, tuple[GitReleaseAsset, str]] = {}
-    for asset in assets:
-        if CURRENT_PYTHON_VERSION not in asset.name:
-            continue
-        for platform in CURRENT_PLATFORMS:
-            if platform in asset.name:
-                asset_platform_map[asset.name] = (asset, platform)
-                break
-
-    if len(asset_platform_map) != len(CURRENT_PLATFORMS):
-        found_platforms = {platform for _, (_, platform) in asset_platform_map.items()}
-        missing_platforms = set(CURRENT_PLATFORMS) - found_platforms
-        raise Exception(
-            f"Expected {len(CURRENT_PLATFORMS)} assets but found {len(asset_platform_map)}. "
-            f"Missing: {', '.join(sorted(missing_platforms))}"
-        )
-
-    print("\nRelease assets:")
-    for asset_name in sorted(asset_platform_map.keys()):
-        print(f"- {asset_name}")
-
-    # https://extensions.blender.org/api/v1/swagger
-    print("\nPublishing assets to Blender Extensions:")
-    for asset_name, (asset, platform) in asset_platform_map.items():
-        publish_asset(asset, token, repo_root)
-
-
-if __name__ == "__main__":
-    main()
@@ -53,7 +53,7 @@ jobs:
          python ../nix/cache_dependencies.py unpack

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.23
+        uses: hendrikmuhs/ccache-action@v1.2.22
        with:
          key: mac-${{ matrix.arch }}

@@ -29,7 +29,7 @@ jobs:
          python ../IfcOpenShell/nix/cache_dependencies.py unpack

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.23
+        uses: hendrikmuhs/ccache-action@v1.2.22
        with:
          key: ubuntu-22.04-${{ runner.arch }}

@@ -9,13 +9,6 @@ jobs:
    container: rockylinux:9

    steps:
-      - name: Set up uv
-        uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
-
-      - name: Install Python
-        # Installs latest Python version so it's preferred by uv over Rocky's system Python.
-        run: uv python install
-
      - name: Install Dependencies
        run: |
          dnf update -y
@@ -24,6 +17,7 @@ jobs:
                         sqlite-devel bzip2-devel zlib-devel openssl-devel xz-devel      \
                         readline-devel ncurses-devel libffi-devel libuuid-devel git-lfs \
                         findutils xz byacc
+          python3 -m pip install typing_extensions
          git config --global --add safe.directory '*'

      - name: Install aws cli
@@ -51,10 +45,10 @@ jobs:
      - name: Unpack Dependencies
        run: |
          cd build
-          uv run ../nix/cache_dependencies.py unpack
+          python3 ../nix/cache_dependencies.py unpack

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.23
+        uses: hendrikmuhs/ccache-action@v1.2.22
        with:
          key: ubuntu-22.04-${{ runner.arch }}-rockylinux9

@@ -62,7 +56,7 @@ jobs:
        shell: bash
        run: |
          set -o pipefail
-          CXXFLAGS="-O3" CFLAGS="-O3 ${DARWIN_C_SOURCE}" ADD_COMMIT_SHA=1 BUILD_CFG=Release uv run ./nix/build-all.py -v --diskcleanup 2>&1 | tee build.log
+          CXXFLAGS="-O3" CFLAGS="-O3 ${DARWIN_C_SOURCE}" ADD_COMMIT_SHA=1 BUILD_CFG=Release python3 ./nix/build-all.py -v --diskcleanup 2>&1 | tee build.log

      - name: Upload Build Logs
        if: always()
@@ -77,7 +71,7 @@ jobs:
      - name: Pack Dependencies
        run: |
          cd build
-          uv run ../nix/cache_dependencies.py pack
+          python3 ../nix/cache_dependencies.py pack

      - name: Commit and Push Changes to Build Repository
        run: |
@@ -9,13 +9,6 @@ jobs:
    container: arm64v8/rockylinux:9

    steps:
-      - name: Set up uv
-        uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
-
-      - name: Install Python
-        # Installs latest Python version so it's preferred by uv over Rocky's system Python.
-        run: uv python install
-
      - name: Install Dependencies
        run: |
          dnf update -y
@@ -24,6 +17,7 @@ jobs:
                         sqlite-devel bzip2-devel zlib-devel openssl-devel xz-devel      \
                         readline-devel ncurses-devel libffi-devel libuuid-devel git-lfs \
                         findutils xz byacc
+          python3 -m pip install typing_extensions
          git config --global --add safe.directory '*'

      - name: Install aws cli
@@ -51,10 +45,10 @@ jobs:
      - name: Unpack Dependencies
        run: |
          cd build
-          uv run ../nix/cache_dependencies.py unpack
+          python3 ../nix/cache_dependencies.py unpack

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.23
+        uses: hendrikmuhs/ccache-action@v1.2.22
        with:
          key: ubuntu-22.04-${{ runner.arch }}-rockylinux9

@@ -62,7 +56,7 @@ jobs:
        shell: bash
        run: |
          set -o pipefail
-          CXXFLAGS="-O3" CFLAGS="-O3 ${DARWIN_C_SOURCE}" ADD_COMMIT_SHA=1 BUILD_CFG=Release uv run ./nix/build-all.py -v --diskcleanup 2>&1 | tee build.log
+          CXXFLAGS="-O3" CFLAGS="-O3 ${DARWIN_C_SOURCE}" ADD_COMMIT_SHA=1 BUILD_CFG=Release python3 ./nix/build-all.py -v --diskcleanup 2>&1 | tee build.log

      - name: Upload Build Logs
        if: always()
@@ -77,7 +71,7 @@ jobs:
      - name: Pack Dependencies
        run: |
          cd build
-          uv run ../nix/cache_dependencies.py pack
+          python3 ../nix/cache_dependencies.py pack

      - name: Commit and Push Changes to Build Repository
        run: |
@@ -52,7 +52,7 @@ jobs:
          }

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.23
+        uses: hendrikmuhs/ccache-action@v1.2.22
        with:
          key: win-${{ matrix.arch }}
          # Windows ccache needs ~1GB
@@ -1,4 +1,4 @@
-name: ci-lint
+name: ci-black-formatting

 on:
  push:
@@ -30,7 +30,6 @@ jobs:
          uv tool install ruff
          uv tool install black
          uv tool install poethepoet
-          uv tool install ty==0.0.34

      # black doesn't catch all syntax errors, so we check them explicitly.
      - name: Check syntax errors
@@ -58,13 +57,6 @@ jobs:
          black --diff --check . | black-codeclimate | python .github/workflows/black_to_github_annotations.py
        continue-on-error: true

-      - name: ty check
-        id: ty
-        run: |
-          poe ty-venv
-          poe ty
-        continue-on-error: true
-
      - name: Ruff check
        id: ruff
        run: |
@@ -95,7 +87,8 @@ jobs:
            echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          }

-          run_check poe ruff
+          run_check poe ruff-main
+          run_check poe ruff-old

          exit $ERROR
        continue-on-error: true
@@ -112,7 +105,4 @@ jobs:
          if [ "${{ steps.ruff.outcome }}" != "success" ]; then
            echo "::error::Ruff check failed, see Summary or 'ruff' step for the details." && ERROR=1
          fi
-          if [ "${{ steps.ty.outcome }}" != "success" ]; then
-            echo "::error::ty check failed, see 'ty check' step for the details." && ERROR=1
-          fi
          exit $ERROR
@@ -24,7 +24,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        pyver: [py311, py312, py313]
+        pyver: [py311, py312]
        config:
          - {
            name: "Windows Build",
@@ -42,11 +42,6 @@ jobs:
            name: "MacOS ARM Build",
            short_name: macosm1,
          }
-        exclude:
-          # Python 3.13 is needed for Blender 5.1+ and Blender dropped Intel Mac support in 5.0.
-          - pyver: py313
-            config:
-              short_name: macos
    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-python@v6 # https://github.com/actions/setup-python
@@ -35,7 +35,7 @@ jobs:

    -
      name: ccache
-      uses: hendrikmuhs/ccache-action@v1.2.23
+      uses: hendrikmuhs/ccache-action@v1.2.22

    - 
      name: Build ifcopenshell
@@ -1,46 +0,0 @@
-name: Release Pyodide WASM Wheel
-
-on:
-  workflow_dispatch:
-
-jobs:
-  build-and-push:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout IfcOpenShell
-        uses: actions/checkout@v6
-
-      - name: Install uv
-        uses: astral-sh/setup-uv@v7
-
-      - name: Build wheel
-        working-directory: pyodide
-        run: uv run pack_wheel.py --build
-
-      - name: Find wheel
-        id: wheel
-        run: |
-          WHEEL=$(ls pyodide/dist/ifcopenshell-*.whl)
-          echo "path=$WHEEL" >> $GITHUB_OUTPUT
-          echo "name=$(basename $WHEEL)" >> $GITHUB_OUTPUT
-
-      - name: Checkout wasm-wheels
-        uses: actions/checkout@v6
-        with:
-          repository: IfcOpenShell/wasm-wheels
-          path: wasm-wheels
-          token: ${{ secrets.BUILD_REPO_TOKEN }}
-
-      - name: Commit and push wheel to wasm-wheels
-        run: |
-          WHEEL_NAME="${{ steps.wheel.outputs.name }}"
-          cp "${{ steps.wheel.outputs.path }}" "wasm-wheels/$WHEEL_NAME"
-          cd wasm-wheels
-          git config user.name "IfcOpenBot"
-          git config user.email "ifcopenbot@ifcopenshell.org"
-          git add "$WHEEL_NAME"
-          git commit -m "Add $WHEEL_NAME"
-          VERSION=$(cat ../VERSION)
-          git tag "v${VERSION}"
-          git push origin main
-          git push origin "v${VERSION}"
@@ -51,7 +51,7 @@ jobs:
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
-          pip install xmlschema xsdata numpy lxml pytest isodate lark networkx tabulate python-dateutil shapely pyparsing
+          pip install xmlschema xsdata numpy lxml pytest isodate lark networkx tabulate python-dateutil shapely
          pip install src/bcf --no-deps
          pip install pytest-xdist==3.8.0

@@ -79,7 +79,7 @@ jobs:
          libhdf5-dev libcgal-dev libeigen3-dev
          
      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.23
+        uses: hendrikmuhs/ccache-action@v1.2.22
        with:
          key: ubuntu-22.04-${{ runner.arch }}

@@ -0,0 +1,36 @@
+name: Build and Deploy Stable Documentation
+
+on:
+  workflow_dispatch:  # Manual trigger
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies
+        run: |
+          cd src/bonsai/docs
+          pip install -r requirements.txt  # Run pip install from the docs directory
+
+      - name: Build documentation
+        run: |
+          cd src/bonsai/docs
+          make html
+
+      - name: Deploy to GitHub Pages (Stable)
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          external_repository: IfcOpenShell/bonsaibim_org_docs
+          publish_branch: main
+          cname: docs.bonsaibim.org
+          publish_dir: src/bonsai/docs/_build/html
@@ -32,7 +32,7 @@ jobs:
          submodules: recursive
          fetch-depth: 0
      - name: Checkout intermediate Pages repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
        with:
          repository: IfcOpenShell/aichat_ifcopenshell_org_static_html
          ref: gh-pages
@@ -42,7 +42,7 @@ jobs:
        run: |
          rsync -av --delete --exclude='.git/' src/ifcchat/ output/
      - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v5
        with:
          python-version: "3.x"
      - name: Download wheels
@@ -1,16 +0,0 @@
-name: Publish Bonsai Releases
-
-on:
-  workflow_dispatch:
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-
-      - uses: astral-sh/setup-uv@v7
-
-      - run: uv run .github/scripts/publish-bonsai-releases.py
-        env:
-          BLENDER_EXTENSIONS_TOKEN: ${{ secrets.BLENDER_EXTENSIONS_TOKEN }}
@@ -32,7 +32,7 @@ jobs:
          submodules: recursive
          fetch-depth: 0
      - name: Checkout intermediate Pages repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
        with:
          repository: IfcOpenShell/wasm_ifcopenshell_org_static_html
          ref: gh-pages
@@ -53,11 +53,11 @@ Contents
 | [ifcedit](https://docs.ifcopenshell.org/ifcedit.html)                   | CLI wrapper for ifcopenshell.api IFC model mutation functions         | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcedit?label=PyPI&color=006dad)](https://pypi.org/project/ifcedit/) |
 | [ifcfm](https://docs.ifcopenshell.org/ifcfm.html)                     | Extract IFC data for FM handover requirements                         | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcfm?label=PyPI&color=006dad)](https://pypi.org/project/ifcfm/) |
 | [ifcmax](https://docs.ifcopenshell.org/ifcmax.html)                    | Historic extension for IFC support in 3DS Max                         | LGPL-3.0-or-later\* | [![Official](https://img.shields.io/badge/IfcOpenShell.org-Download-70ba35)](https://docs.ifcopenshell.org/ifcmax.html)
-| [ifcmcp](https://docs.ifcopenshell.org/ifcmcp.html)                    | MCP server for querying and editing IFC building models               | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcopenshell-mcp?label=PyPI&color=006dad)](https://pypi.org/project/ifcopenshell-mcp/) |
-| [ifcopenshell-python](https://docs.ifcopenshell.org/ifcopenshell-python.html)       | Python library for IFC manipulation                                   | LGPL-3.0-or-later\* | [![Official](https://img.shields.io/badge/IfcOpenShell.org-Download-70ba35)](https://docs.ifcopenshell.org/ifcopenshell-python/installation.html) [![GitHub](https://img.shields.io/github/v/release/ifcopenshell/ifcopenshell?filter=ifcopenshell-python-*&label=GitHub&color=f6f8fa)](https://github.com/IfcOpenShell/IfcOpenShell/releases?q=ifcopenshell-python&expanded=true) [![PyPI](https://img.shields.io/pypi/v/ifcopenshell?label=PyPI&color=006dad)](https://pypi.org/project/ifcopenshell/) [![Anaconda](https://img.shields.io/conda/vn/conda-forge/ifcopenshell?label=Anaconda&color=43b02a)](https://anaconda.org/conda-forge/ifcopenshell) [![Anaconda](https://img.shields.io/conda/vn/ifcopenshell/ifcopenshell?label=Anaconda-Unstable&color=43b02a)](https://anaconda.org/ifcopenshell/ifcopenshell) [![Docker](https://img.shields.io/docker/pulls/aecgeeks/ifcopenshell?label=Docker&color=1D63ED)](https://hub.docker.com/r/aecgeeks/ifcopenshell) [![AUR](https://img.shields.io/aur/version/ifcopenshell?label=AUR&color=1793d1)](https://aur.archlinux.org/packages/ifcopenshell) [![AUR Unstable](https://img.shields.io/aur/version/ifcopenshell-git?label=AUR-Unstable&color=1793d1)](https://aur.archlinux.org/packages/ifcopenshell-git) [![Pyodide WASM Wheels tag](https://img.shields.io/github/v/tag/ifcopenshell/wasm-wheels?sort=semver&label=pyodide-wasm-wheels)](https://github.com/IfcOpenShell/wasm-wheels) |
+| [ifcmcp](https://docs.ifcopenshell.org/ifcmcp.html)                    | MCP server for querying and editing IFC building models               | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcmcp?label=PyPI&color=006dad)](https://pypi.org/project/ifcmcp/) |
+| [ifcopenshell-python](https://docs.ifcopenshell.org/ifcopenshell-python.html)       | Python library for IFC manipulation                                   | LGPL-3.0-or-later\* | [![Official](https://img.shields.io/badge/IfcOpenShell.org-Download-70ba35)](https://docs.ifcopenshell.org/ifcopenshell-python/installation.html) [![GitHub](https://img.shields.io/github/v/release/ifcopenshell/ifcopenshell?filter=ifcopenshell-python-*&label=GitHub&color=f6f8fa)](https://github.com/IfcOpenShell/IfcOpenShell/releases?q=ifcopenshell-python&expanded=true) [![PyPI](https://img.shields.io/pypi/v/ifcopenshell?label=PyPI&color=006dad)](https://pypi.org/project/ifcopenshell/) [![Anaconda](https://img.shields.io/conda/vn/conda-forge/ifcopenshell?label=Anaconda&color=43b02a)](https://anaconda.org/conda-forge/ifcopenshell) [![Anaconda](https://img.shields.io/conda/vn/ifcopenshell/ifcopenshell?label=Anaconda-Unstable&color=43b02a)](https://anaconda.org/ifcopenshell/ifcopenshell) [![Docker](https://img.shields.io/docker/pulls/aecgeeks/ifcopenshell?label=Docker&color=1D63ED)](https://hub.docker.com/r/aecgeeks/ifcopenshell) [![AUR](https://img.shields.io/aur/version/ifcopenshell?label=AUR&color=1793d1)](https://aur.archlinux.org/packages/ifcopenshell) [![AUR Unstable](https://img.shields.io/aur/version/ifcopenshell-git?label=AUR-Unstable&color=1793d1)](https://aur.archlinux.org/packages/ifcopenshell-git) [Pyodide WASM Wheels](https://github.com/IfcOpenShell/wasm-wheels#pyodide-test-wheels) |
 | [ifcpatch](https://docs.ifcopenshell.org/ifcpatch.html)                  | Utility to run pre-packaged scripts to manipulate IFCs                | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcpatch?label=PyPI&color=006dad)](https://pypi.org/project/ifcpatch/) |
 | [ifcquery](https://docs.ifcopenshell.org/ifcquery.html)                  | CLI tool for querying and inspecting IFC building models              | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcquery?label=PyPI&color=006dad)](https://pypi.org/project/ifcquery/) |
-| [ifcsverchok](https://docs.ifcopenshell.org/ifcsverchok.html)               | Blender Add-on for visual node programming with IFC                   | GPL-3.0-or-later    | [![GitHub](https://img.shields.io/github/v/release/ifcopenshell/ifcopenshell?filter=ifcsverchok-*.*.*&label=GitHub&color=f6f8fa)](https://github.com/IfcOpenShell/IfcOpenShell/releases?q=ifcsverchok&expanded=true)
+| [ifcsverchok](https://docs.ifcopenshell.org/ifcsverchok.html)               | Blender Add-on for visual node programming with IFC                   | GPL-3.0-or-later    | [![GitHub Unstable](https://img.shields.io/github/v/release/ifcopenshell/ifcopenshell?filter=ifcsverchok-*.*.*.*&label=GitHub-Unstable&color=f6f8fa)](https://github.com/IfcOpenShell/IfcOpenShell/releases?q=ifcsverchok&expanded=true)
 | [ifctester](https://docs.ifcopenshell.org/ifctester.html)                 | Library, CLI and webapp for IDS model auditing                        | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifctester?label=PyPI&color=006dad)](https://pypi.org/project/ifctester/) |

 The IfcOpenShell C++ codebase is split into multiple interal libraries:
@@ -1 +1 @@
-0.8.6
+0.8.5
@@ -1,6 +1,4 @@
 #!/usr/bin/python
-# /// script
-# ///
 ###############################################################################
 #                                                                             #
 # This file is part of IfcOpenShell.                                          #
@@ -126,9 +124,16 @@ ssl._create_default_https_context = ssl._create_unverified_context
 import time
 from collections.abc import Generator, Sequence
 from pathlib import Path
-from typing import Literal, Union
 from urllib.request import urlretrieve

+try:
+    from typing import Literal, Union
+except:
+    # python 3.6 compatibility for rocky 8
+    from typing import Union
+
+    from typing_extensions import Literal
+
 logger = logging.getLogger(__name__)
 logger.setLevel(logging.INFO)
 ch = logging.StreamHandler()
@@ -1089,19 +1094,10 @@ if "python" in targets and not USE_CURRENT_PYTHON_VERSION and "wasm" not in flag
            f"http://www.python.org/ftp/python/{PYTHON_VERSION}/",
            f"Python-{PYTHON_VERSION}.tgz",
        )
-        python_install = INSTALL_DIR / f"python-{PYTHON_VERSION}"
-        python_bin = python_install / "bin" / "python3"
+        python_bin = INSTALL_DIR / f"python-{PYTHON_VERSION}" / "bin" / "python3"
        # `_ssl` module is present -> we will be able to install `numpy` later
        # to verify IfcOpenShell installation
-        try:
-            run([str(python_bin), "-c", "import _ssl"])
-        except RuntimeError:
-            print(
-                "ERROR: Python was built without SSL support (_ssl module is missing). "
-                f"To fix this: remove the installed Python at {python_install}; "
-                "install OpenSSL development libraries and re-run."
-            )
-            raise
+        run([str(python_bin), "-c", "import _ssl"])

    if MAC_CROSS_COMPILE_INTEL:
        assert original_path
@@ -1519,7 +1515,7 @@ if "IfcOpenShell-Python" in targets:
        )
        # Copy setup.py where pyodide build system expects it.
        shutil.copy(REPO_PATH / "pyodide" / "setup.py", REPO_PATH)
-        # Empty pyproject so it's contents won't affect the resulting wheel
+        # Empty pyproject so it's contents won't affect the resulting wheelthe the
        # otherwise the wheel will use version and dependencies from toml, not setup.py.
        (REPO_PATH / "pyproject.toml").write_text("")

@@ -1,5 +1,3 @@
-# /// script
-# ///
 """
 Cache built dependencies for builds.

@@ -1,11 +1,6 @@
 #!/usr/bin/bash
 set -ex

-PYODIDE_VERSION=0.29.3
-PYODIDE_BUILD_VERSION=0.33.0
-PYODIDE_XBUILDENV_ROOT="${HOME}/.cache/.pyodide-xbuildenv-${PYODIDE_BUILD_VERSION}"
-PYODIDE_XBUILDENV="${PYODIDE_XBUILDENV_ROOT}/${PYODIDE_VERSION}"
-
 # Script is assuming that it will be possible to execute it multiple times
 # therefore we're clearing venv each time and ignoring existing 'emsdk' folder.

@@ -16,15 +11,21 @@ source .venv/bin/activate

 # Install pyodide cross build environment.
 # Instructions: https://pyodide.org/en/stable/development/building-packages.html
-uv pip install "pyodide-build==${PYODIDE_BUILD_VERSION}"
+uv pip install pyodide-build
 # `uv run` is required, so xbuildenv would skip using `pip`.
-uv run pyodide xbuildenv install "${PYODIDE_VERSION}"
-uv run pyodide xbuildenv install-emscripten
+uv run pyodide xbuildenv install

-EMSDK_ROOT="${PYODIDE_XBUILDENV}/emsdk"
-source "${EMSDK_ROOT}/emsdk_env.sh"
+# Emscripten doesn't come with xbuildenv.
+if [ ! -d emsdk ]; then
+  git clone https://github.com/emscripten-core/emsdk
+fi
+pushd emsdk
+PYODIDE_EMSCRIPTEN_VERSION=$(pyodide config get emscripten_version)
+./emsdk install ${PYODIDE_EMSCRIPTEN_VERSION}
+./emsdk activate ${PYODIDE_EMSCRIPTEN_VERSION}
+source emsdk_env.sh
 which emcc
-emcc --version
+popd

 mkdir -p packages/ifcopenshell
 VERSION=`cat IfcOpenShell/VERSION`
@@ -1,232 +0,0 @@
-#
-# /// script
-# # Latest Pyodide build env versions are listed here:
-# # https://pyodide.github.io/pyodide/api/pyodide-cross-build-environments.json
-# # https://github.com/pyodide/pyodide-build/blob/main/pyodide_build/xbuildenv_releases.py
-# requires-python = "==3.13.2"
-# dependencies = [
-#   "requests",
-#   "setuptools",
-# ]
-# ///
-"""
-Pack an IfcOpenShell WASM wheel using Pyodide build system.
-
-Usage:
-    uv run make_wheel.py           # Show this help
-    uv run make_wheel.py --build   # Build wheel
-    uv run make_wheel.py --clean   # Clean build artifacts and exit
-"""
-
-import argparse
-import os
-import re
-import shutil
-import subprocess
-import time
-import zipfile
-from pathlib import Path
-from urllib.parse import quote
-
-import requests
-
-# Get repo root (parent of this script's parent directory)
-REPO_ROOT = Path(__file__).parent.parent
-PYODIDE_DIR = REPO_ROOT / "pyodide"
-BUILD_DIR = PYODIDE_DIR / "build"
-
-# Hardcoded path (Windows packing workaround with --dev flag)
-PYODIDE_BUILD = Path(r"L:\Projects\Github\pyodide-build")
-
-# Wheel platform tag (from PYODIDE_EMSCRIPTEN_VERSION in pyodide-build/Makefile.envs)
-WHEEL_PLATFORM_TAG = "emscripten_4_0_9_wasm32"
-
-# Location where ifcopenshell will be extracted
-IFCOPENSHELL_DIR = PYODIDE_DIR / "ifcopenshell"
-
-
-class WheelBuilder:
-    @staticmethod
-    def extract_ifcopenshell_from_git(dst: Path) -> None:
-        """Extract ifcopenshell directory from git repo into destination."""
-        Tools.rmrf(dst)
-
-        print(f"Extracting ifcopenshell from git to {dst}...")
-        # Use git ls-files piped to git checkout-index to avoid copying
-        # untracked or ignored files from the actual repo.
-        ls_proc = subprocess.Popen(
-            ["git", "ls-files", "-z", "src/ifcopenshell-python/ifcopenshell"],
-            cwd=REPO_ROOT,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-        )
-        checkout_proc = subprocess.Popen(
-            ["git", "checkout-index", "-z", "--prefix", "pyodide/", "--stdin"],
-            cwd=REPO_ROOT,
-            stdin=ls_proc.stdout,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-        )
-        assert ls_proc.stdout is not None
-        ls_proc.stdout.close()
-        checkout_proc.communicate()
-
-        if checkout_proc.returncode != 0:
-            assert checkout_proc.stderr is not None
-            raise RuntimeError(f"Failed to extract: {checkout_proc.stderr.decode()}")
-
-        # Move src/ifcopenshell-python/ifcopenshell to ifcopenshell.
-        temp_src = PYODIDE_DIR / "src" / "ifcopenshell-python" / "ifcopenshell"
-        shutil.move(temp_src, dst)
-
-        # Clean up temporary src directory.
-        Tools.rmrf(PYODIDE_DIR / "src")
-
-        print("✓ Extracted ifcopenshell from git")
-
-    @staticmethod
-    def get_wheel_url(makefile_path: Path) -> str:
-        """Get S3 wheel URL based on BINARY_VERSION and BUILD_COMMIT from Makefile."""
-
-        def parse_makefile_vars() -> dict[str, str]:
-            content = makefile_path.read_text()
-            vars: dict[str, str] = {}
-            for match in re.finditer(r"^(BINARY_VERSION|BUILD_COMMIT):=(.+)$", content, re.MULTILINE):
-                vars[match.group(1)] = match.group(2).strip()
-            return vars
-
-        vars: dict[str, str] = parse_makefile_vars()
-        binary_version = vars["BINARY_VERSION"]
-        build_commit = vars["BUILD_COMMIT"]
-        filename = f"ifcopenshell-{binary_version}+{build_commit}-cp313-cp313-pyodide_2025_0_wasm32.whl"
-        encoded_filename = quote(filename, safe="")
-        return f"https://s3.amazonaws.com/ifcopenshell-builds/{encoded_filename}"
-
-    @staticmethod
-    def download_and_extract_so(url: str, build_dir: Path) -> tuple[Path, Path]:
-        """Download wheel from URL and extract .so and .py files."""
-        py_wrapper_filename = "ifcopenshell_wrapper.py"
-        build_dir.mkdir(parents=True, exist_ok=True)
-
-        wheel_path = build_dir / url.rsplit("/", 1)[-1]
-
-        if wheel_path.exists():
-            print(f"Using cached wheel: {wheel_path}")
-        else:
-            print(f"Downloading {url}...")
-            response = requests.get(url)
-            response.raise_for_status()
-            wheel_path.write_bytes(response.content)
-
-        print("Extracting _ifcopenshell_wrapper files...")
-        with zipfile.ZipFile(wheel_path) as zf:
-            so_files = [f for f in zf.namelist() if f.endswith(".so")]
-            py_files = [f for f in zf.namelist() if f.endswith(py_wrapper_filename)]
-
-            assert so_files, "No .so file found in wheel"
-            assert py_files, f"No {py_wrapper_filename} file found in wheel"
-
-            so_file = so_files[0]
-            so_dst = build_dir / Path(so_file).name
-            so_dst.write_bytes(zf.read(so_file))
-
-            py_file = py_files[0]
-            py_dst = build_dir / Path(py_file).name
-            py_dst.write_bytes(zf.read(py_file))
-
-        return so_dst, py_dst
-
-
-class Tools:
-    @staticmethod
-    def run(
-        cmd: list[str],
-        cwd: Path | None = None,
-    ) -> None:
-        print(f"$ {' '.join(cmd)}")
-        subprocess.check_call(cmd, cwd=cwd)
-
-    @staticmethod
-    def create_symlink(dst: Path, src: Path) -> None:
-        Tools.rmrf(dst)
-        dst.symlink_to(src)
-
-    @staticmethod
-    def rmrf(path: Path) -> None:
-        if path.exists() or path.is_symlink():
-            if path.is_dir() and not path.is_symlink():
-                shutil.rmtree(path)
-            else:
-                path.unlink()
-
-
-def clean() -> None:
-    """Remove build artifacts."""
-    paths_to_remove = (
-        BUILD_DIR,
-        PYODIDE_DIR / ".pyodide_build",
-        PYODIDE_DIR / "dist",
-        PYODIDE_DIR / "ifcopenshell.egg-info",
-        PYODIDE_DIR / "src",
-        IFCOPENSHELL_DIR,
-    )
-    for path in paths_to_remove:
-        if path.exists() or path.is_symlink():
-            print(f"Removing {path}...")
-            Tools.rmrf(path)
-    print("✓ Clean complete")
-
-
-def main() -> None:
-    parser = argparse.ArgumentParser(description=__doc__, add_help=False)
-    parser.add_argument("--build", action="store_true", help="Build the wheel")
-    parser.add_argument("--clean", action="store_true", help="Clean build folder")
-    parser.add_argument(
-        "--dev",
-        action="store_true",
-        help="Use editable pyodide-build from hardcoded path (Windows packing workaround)",
-    )
-    args = parser.parse_args()
-
-    if not args.build and not args.clean:
-        print(__doc__)
-        return
-
-    if args.clean:
-        clean()
-        return
-
-    start_time = time.time()
-
-    WheelBuilder.extract_ifcopenshell_from_git(IFCOPENSHELL_DIR)
-
-    print("Downloading and extracting _ifcopenshell_wrapper files...")
-    makefile = REPO_ROOT / "src" / "ifcopenshell-python" / "Makefile"
-    wheel_url = WheelBuilder.get_wheel_url(makefile)
-    so_file, py_file = WheelBuilder.download_and_extract_so(wheel_url, BUILD_DIR)
-
-    Tools.create_symlink(IFCOPENSHELL_DIR / Path(so_file).name, so_file)
-    Tools.create_symlink(IFCOPENSHELL_DIR / Path(py_file).name, py_file)
-
-    print("Installing pyodide-build...")
-    if args.dev:
-        Tools.run(["uv", "pip", "install", "-e", str(PYODIDE_BUILD)])
-    else:
-        Tools.run(["uv", "pip", "install", "pyodide-build"])
-
-    print("Building with pyodide...")
-    # Use --no-isolation due to pyodide-build Windows support issues:
-    # symlink_unisolated_packages fails with missing `_sysconfigdata_$(CPYTHON_ABI_FLAGS)_emscripten_wasm32-emscripten.py`.
-    # Hardcode platform name since pyodide doesn't yet support overriding wheel tags on Windows.
-    #
-    # Use `LEGACY_PLATFORM` since pyodide 0.34.1 introduced new tag for wheels `pyemscripten`,
-    # which doesn't work with pyodide itself yet - https://github.com/pyodide/pyodide/issues/6177.
-    os.environ["USE_LEGACY_PLATFORM"] = "1"
-    Tools.run(["pyodide", "build", f"-C--build-option=--plat-name={WHEEL_PLATFORM_TAG}"])
-
-    elapsed = time.time() - start_time
-    print(f"\n✓ Done! ({elapsed:.1f}s)")
-
-
-if __name__ == "__main__":
-    main()
@@ -2,16 +2,12 @@
 # because `tool.setuptools.ext-modules` is still experimental in pyproject.toml
 # and we need it to get the wheel suffix right.
 import os
-import sys
 from pathlib import Path

 import tomllib
 from setuptools import Extension, find_packages, setup
-from setuptools.command.build_ext import build_ext

-# Detect repo folder: if setup.py is in pyodide folder, go to parent
-SETUP_DIR = Path(__file__).parent
-REPO_FOLDER = SETUP_DIR.parent if SETUP_DIR.name == "pyodide" else SETUP_DIR
+REPO_FOLDER = Path(__file__).parent


 def get_version() -> str:
@@ -29,39 +25,6 @@ def get_dependencies() -> list[str]:
    return dependencies


-class UnixBuildExt(build_ext):
-    """Customize ``build_ext`` to support packing on Windows."""
-
-    def finalize_options(self):
-        from distutils import sysconfig
-
-        super().finalize_options()
-        if sys.platform == "win32":
-            self.compiler = "unix"
-
-            # Configure sysconfig for Windows builds
-            # CCSHARED is the only variable that's not customizable with env vars.
-            # Basically avoiding this:
-            # File ".venv\Lib\site-packages\setuptools\_distutils\sysconfig.py", line 366, in customize_compiler
-            #     compiler_so=cc_cmd + ' ' + ccshared,
-            #                 ~~~~~~~~~~~~~^~~~~~~~~~
-            # TypeError: can only concatenate str (not "NoneType") to str
-            sysconfig.get_config_vars()  # Initialize config cache
-            if sysconfig._config_vars.get("CCSHARED") is None:
-                sysconfig._config_vars["CCSHARED"] = "-fPIC"
-            # Override compiler type before it's instantiated
-
-        # Set Emscripten compiler environment variables
-        os.environ["CC"] = "emcc"
-        os.environ["CXX"] = "em++"
-        os.environ["CFLAGS"] = ""
-        os.environ["CXXFLAGS"] = ""
-        os.environ["LDSHARED"] = "emcc -shared"
-        os.environ["AR"] = "emar"
-        os.environ["ARFLAGS"] = "rcs"
-        os.environ["SETUPTOOLS_EXT_SUFFIX"] = ".cpython-313-wasm32-emscripten.so"
-
-
 setup(
    name="ifcopenshell",
    version=get_version(),
@@ -81,5 +44,4 @@ setup(
    },
    # Has to provide extension to get the correct wheel suffix.
    ext_modules=[Extension("ifcopenshell._ifcopenshell_wrapper", sources=[])],
-    cmdclass={"build_ext": UnixBuildExt},
 )
@@ -3,9 +3,8 @@ name = "IfcOpenShell"
 version = "0.0.0"
 dependencies = [
    "black==26.3.1",
-    "ruff==0.15.12",
+    "ruff==0.15.8",
    "poethepoet",
-    "ty==0.0.32",
    "gersemi==0.26.1",
 ]

@@ -29,9 +28,6 @@ extend-exclude = '''
 reportInvalidTypeForm = false
 disableBytesTypePromotions = true
 reportUnnecessaryTypeIgnoreComment = true
-reportRedeclaration = false
-# Ignore warnings from bpy stubs missing actual source files.
-reportMissingModuleSource = false
 # Pylance doesn't respect gitignore, so we have to exclude files manually here
 # to avoid VS Code slowing down.
 # https://github.com/microsoft/pylance-release/issues/5169
@@ -88,6 +84,7 @@ all = "ignore"
 # Structural rules (no deep type inference needed, easier to adapt).
 abstract-method-in-final-class = "error"
 ambiguous-protocol-member = "error"
+byte-string-type-annotation = "error"
 conflicting-declarations = "error"
 conflicting-metaclass = "error"
 cyclic-class-definition = "error"
@@ -99,6 +96,7 @@ empty-body = "error"
 escape-character-in-forward-annotation = "error"
 final-on-non-method = "error"
 final-without-value = "error"
+fstring-type-annotation = "error"
 ignore-comment-unknown-rule = "error"
 implicit-concatenated-string-type-annotation = "error"
 inconsistent-mro = "error"
@@ -215,7 +213,10 @@ exclude = [

 [tool.poe.tasks]

-ruff = "ruff check"
+ruff-main = "ruff check --extend-exclude nix/build-all.py"
+# It's actually Python 3.6, but ruff only supports 3.7+, but it should do.
+ruff-old = "ruff check nix/build-all.py --target-version py37"
+ruff.sequence = ["ruff-main", "ruff-old"]

 black = "black ."

@@ -223,7 +224,7 @@ ty.sequence = ["ty-bonsai", "ty-ios"]
 ty.help = "Run ty type checker. Requires ty-venv to be set up first."
 ty-bonsai = "ty check src/bonsai --python=src/bonsai/.venv"

-ty-venv.sequence = ["bonsai-deps", "ty-venv-bonsai", "ty-venv-ios"]
+ty-venv.sequence = ["ty-venv-bonsai", "ty-venv-ios"]

 ty-venv-bonsai.sequence = [
    {cmd = "uv venv src/bonsai/.venv --python=3.11 --allow-existing"},
@@ -235,7 +236,7 @@ ty-venv-ios.sequence = [
    {cmd = "uv pip install -r src/ifcopenshell-python/type-check-requirements.txt --python=src/ifcopenshell-python/.venv"},
 ]

-format.sequence = ["black", "ruff"]
+format.sequence = ["black", "ruff-main", "ruff-old"]

 cmake-format = "gersemi . --in-place"

@@ -17,8 +17,8 @@
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.

 SHELL := sh
-PYTHON:=python3
-PIP:=pip3
+PYTHON:=python3.11
+PIP:=pip3.11
 PATCH:=patch
 SED:=sed -i
 VENV_ACTIVATE:=bin/activate
@@ -64,7 +64,7 @@ PYNUMBER:=3$(PYMINOR)
 PYPI_VERSION:=3.$(PYMINOR)
 endif # def PYVERSION

-IFCMERGE_VERSION:=2026-04-07
+IFCMERGE_VERSION:=2026-04-02

 ifdef PLATFORM
 SUPPORTED_PLATFORMS := linux macos macosm1 win
@@ -192,11 +192,7 @@ endif
 	# Provides networkx graph analysis for project dependency calculations
 	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download networkx --dest=./wheels
 	# Required by IFCDiff
-	# Pinned <9.1: deepdiff 9.1.0 adds cachebox<6,>=5.2 which only ships macOS x86_64
-	# wheels for macosx_10_12+ and is incompatible with our macos py311 --platform
-	# macosx_10_10_x86_64 target. Revisit once the macos py311 platform tag is bumped
-	# to 10_13 (matching py312/py313).
-	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download "deepdiff<9.1" --dest=./wheels
+	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download deepdiff --dest=./wheels
 	# Required by IFCCSV and ifcopenshell.util.selector
 	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download lark --dest=./wheels
 	# Required by IFC4D
@@ -360,10 +356,6 @@ else
 	pytest test/tool/test_$(MODULE).py --maxfail=1
 endif

-.PHONY: test-modal
-test-modal:
-	blender --enable-event-simulate --python test/modal/test_modal.py --window-maximized
-
 # Reregistering test is not added to the standard test suite because during unregister
 # Blender removes all Bonsai dependencies breaking dev-environment symlinks.
 .PHONY: test-reregister
@@ -15,8 +15,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import importlib
 import os
@@ -27,19 +25,7 @@ import bpy
 import bpy.utils.previews
 from bpy_extras.io_utils import ExportHelper, ImportHelper

-from . import handler, operator, parametric_lifecycle, prop, ui
-
-
-def _parametric_gizmo_preference_classes() -> list[type]:
-    """Resolves the registry-driven ``GizmoPreferences<X>`` classes for the
-    ``classes`` list below. ``import bonsai.tool`` is kept local to surface
-    the load-order constraint: it relies on ``from . import handler, …``
-    above having primed the
-    ``tool/ifc.py → bim/ifc.py → bim/handler.py → bonsai.tool`` cycle."""
-    import bonsai.tool as tool
-
-    return tool.Parametric.iter_gizmo_preference_classes(ui)
-
+from . import handler, operator, prop, ui

 try:
    from bonsai.translations import translations_dict
@@ -171,10 +157,9 @@ classes = [
    ui.BIM_UL_tab_visibilities,
    ui.BIM_UL_panel_visibilities,
    ui.DocPreferences,
-    # Per-parametric-type ``GizmoPreferences<Name>`` classes — must register
-    # before ``ui.GizmoPreferences`` which holds the matching PointerProperty
-    # fields. Driven by ``tool.Parametric.EDIT_TYPES``.
-    *_parametric_gizmo_preference_classes(),
+    ui.GizmoPreferencesDoor,  # Register before GizmoPreferences
+    ui.GizmoPreferencesWindow,  # Register before GizmoPreferences
+    ui.GizmoPreferencesStair,  # Register before GizmoPreferences
    ui.GizmoPreferences,
    # ui.DefaultParameters and ui.BIM_ADDON_preferences are registered separately after modules (see late_classes below)
    # Tabs panel
@@ -283,8 +268,6 @@ def register():
    bpy.app.handlers.depsgraph_update_post.append(on_register)
    bpy.app.handlers.undo_post.append(handler.undo_post)
    bpy.app.handlers.redo_post.append(handler.redo_post)
-    # Must follow the two appends above so regenerators see restored IFC state.
-    parametric_lifecycle.install_parametric_lifecycle_handlers()
    bpy.app.handlers.load_post.append(handler.load_post)
    bpy.app.handlers.load_post.append(handler.loadIfcStore)
    bpy.types.Scene.BIMProperties = bpy.props.PointerProperty(type=prop.BIMProperties)
@@ -342,7 +325,6 @@ def unregister():

    unregister_classes(classes)

-    parametric_lifecycle.uninstall_parametric_lifecycle_handlers()
    bpy.app.handlers.load_post.remove(handler.load_post)
    bpy.app.handlers.load_post.remove(handler.loadIfcStore)
    del bpy.types.Scene.BIMProperties
@@ -1,96 +0,0 @@
-Copyright (c) 2011-2012, Nikita Volchenkov (<nikitavolchenkov@gmail.com>),
-with Reserved Font Name OpenGost Type B.
-
-Copyright (c) 2012, Valek Filippov (<frob@gnome.org>).
-
-This Font Software is licensed under the SIL Open Font License, Version 1.1.
-This license is copied below, and is also available with a FAQ at:
-http://scripts.sil.org/OFL
-
-
-----------------------------------------------------------
-SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------
-
-PREAMBLE
-The goals of the Open Font License (OFL) are to stimulate worldwide
-development of collaborative font projects, to support the font creation
-efforts of academic and linguistic communities, and to provide a free and
-open framework in which fonts may be shared and improved in partnership
-with others.
-
-The OFL allows the licensed fonts to be used, studied, modified and
-redistributed freely as long as they are not sold by themselves. The
-fonts, including any derivative works, can be bundled, embedded, 
-redistributed and/or sold with any software provided that any reserved
-names are not used by derivative works. The fonts and derivatives,
-however, cannot be released under any other type of license. The
-requirement for fonts to remain under this license does not apply
-to any document created using the fonts or their derivatives.
-
-DEFINITIONS
-"Font Software" refers to the set of files released by the Copyright
-Holder(s) under this license and clearly marked as such. This may
-include source files, build scripts and documentation.
-
-"Reserved Font Name" refers to any names specified as such after the
-copyright statement(s).
-
-"Original Version" refers to the collection of Font Software components as
-distributed by the Copyright Holder(s).
-
-"Modified Version" refers to any derivative made by adding to, deleting,
-or substituting -- in part or in whole -- any of the components of the
-Original Version, by changing formats or by porting the Font Software to a
-new environment.
-
-"Author" refers to any designer, engineer, programmer, technical
-writer or other person who contributed to the Font Software.
-
-PERMISSION & CONDITIONS
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Font Software, to use, study, copy, merge, embed, modify,
-redistribute, and sell modified and unmodified copies of the Font
-Software, subject to the following conditions:
-
-1) Neither the Font Software nor any of its individual components,
-in Original or Modified Versions, may be sold by itself.
-
-2) Original or Modified Versions of the Font Software may be bundled,
-redistributed and/or sold with any software, provided that each copy
-contains the above copyright notice and this license. These can be
-included either as stand-alone text files, human-readable headers or
-in the appropriate machine-readable metadata fields within text or
-binary files as long as those fields can be easily viewed by the user.
-
-3) No Modified Version of the Font Software may use the Reserved Font
-Name(s) unless explicit written permission is granted by the corresponding
-Copyright Holder. This restriction only applies to the primary font name as
-presented to the users.
-
-4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
-Software shall not be used to promote, endorse or advertise any
-Modified Version, except to acknowledge the contribution(s) of the
-Copyright Holder(s) and the Author(s) or with their explicit written
-permission.
-
-5) The Font Software, modified or unmodified, in part or in whole,
-must be distributed entirely under this license, and must not be
-distributed under any other license. The requirement for fonts to
-remain under this license does not apply to any document created
-using the Font Software.
-
-TERMINATION
-This license becomes null and void if any of the above conditions are
-not met.
-
-DISCLAIMER
-THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
-OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
-DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
-OTHER DEALINGS IN THE FONT SOFTWARE.
@@ -1,119 +0,0 @@
-# Bonsai - OpenBIM Blender Add-on
-# Copyright (C) 2026
-#
-# This file is part of Bonsai.
-#
-# Bonsai is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Bonsai is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was generated with the assistance of an AI coding tool.
-
-"""Shared structural-change cache token for POST_VIEW decorators.
-
-Decorators include the token in their cache key and rebuild on bump."""
-
-from __future__ import annotations
-
-from collections.abc import Callable
-from typing import Any, Generic, TypeVar
-
-import bpy
-
-T = TypeVar("T")
-
-_DECORATOR_CACHE_TOKEN = 0
-
-
-def get_decorator_cache_token() -> int:
-    return _DECORATOR_CACHE_TOKEN
-
-
-def reset_for_test() -> None:
-    """Test-only: reset the cache token to 0 so bump-count assertions are stable."""
-    global _DECORATOR_CACHE_TOKEN
-    _DECORATOR_CACHE_TOKEN = 0
-
-
-@bpy.app.handlers.persistent
-def _bump_decorator_cache_token(*args: Any) -> None:
-    """depsgraph_update_post fires every animation frame and every driver
-    evaluation, even when no IFC-relevant ID block changed. Unconditional
-    bumping defeats the cache: an animated scene rebuilds every decorator
-    every viewport tick. Gate the depsgraph path on Object geometry or
-    transform updates; undo / redo / load have no depsgraph and always
-    invalidate.
-
-    Coverage assumption: ``TokenCache`` consumers key on Object identity
-    (depsgraph updates whose ``id`` is a ``bpy.types.Object``). Mesh /
-    Material / NodeTree updates that don't surface as an Object change
-    do NOT invalidate the token — a decorator that caches material- or
-    mesh-data-derived state must gate on a separate signal."""
-    global _DECORATOR_CACHE_TOKEN
-    if len(args) >= 2:
-        depsgraph = args[1]
-        if depsgraph is not None and hasattr(depsgraph, "updates"):
-            if not any(
-                (getattr(u, "is_updated_geometry", False) or getattr(u, "is_updated_transform", False))
-                and hasattr(u, "id")
-                and isinstance(u.id, bpy.types.Object)
-                for u in depsgraph.updates
-            ):
-                return
-    _DECORATOR_CACHE_TOKEN += 1
-
-
-def _hooks() -> tuple[Any, ...]:
-    return (
-        bpy.app.handlers.depsgraph_update_post,
-        bpy.app.handlers.undo_post,
-        bpy.app.handlers.redo_post,
-        bpy.app.handlers.load_post,
-    )
-
-
-def install_decorator_cache_handlers() -> None:
-    """Append the bump handler to each hook; idempotent."""
-    for hook in _hooks():
-        if _bump_decorator_cache_token not in hook:
-            hook.append(_bump_decorator_cache_token)
-
-
-def uninstall_decorator_cache_handlers() -> None:
-    for hook in _hooks():
-        try:
-            hook.remove(_bump_decorator_cache_token)
-        except ValueError:
-            pass
-
-
-class TokenCache(Generic[T]):
-    """Memoise a single value keyed on ``(caller_key, get_decorator_cache_token())``.
-
-    The token component invalidates the cache on depsgraph / undo / redo / load,
-    so cached ``bpy.types.Object`` references can't outlive the underlying ID
-    blocks. Holds exactly one entry — last key wins."""
-
-    __slots__ = ("_key", "_value")
-
-    def __init__(self) -> None:
-        self._key: tuple[Any, int] | None = None
-        self._value: T | None = None
-
-    def get_or_compute(self, key: Any, compute: Callable[[], T]) -> T:
-        token_key = (key, _DECORATOR_CACHE_TOKEN)
-        if token_key == self._key:
-            return self._value  # type: ignore[return-value]
-        value = compute()
-        self._key = token_key
-        self._value = value
-        return value
@@ -15,12 +15,11 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import os
 import weakref
 from collections.abc import Callable
+from math import cos
 from typing import Union

 import bpy
@@ -32,13 +31,8 @@ from bpy.app.handlers import persistent
 from mathutils import Vector

 import bonsai.bim
-import bonsai.core.model as core_model
 import bonsai.tool as tool
-from bonsai.bim.decorator_cache import (
-    install_decorator_cache_handlers,
-    uninstall_decorator_cache_handlers,
-)
-from bonsai.bim.ifc import IfcStore, get_cache_or_detect_lock
+from bonsai.bim.ifc import IfcStore
 from bonsai.bim.module.aggregate.decorator import AggregateDecorator
 from bonsai.bim.module.georeference.decorator import GeoreferenceDecorator
 from bonsai.bim.module.model.data import AuthoringData
@@ -46,9 +40,7 @@ from bonsai.bim.module.model.decorator import (
    BoundingBoxDecorator,
    SlabDirectionDecorator,
    WallAxisDecorator,
-    WallFilletPreviewDecorator,
 )
-from bonsai.bim.module.model.preview_base import discard_pending_previews
 from bonsai.bim.module.nest.decorator import NestDecorator

 cwd = os.path.dirname(os.path.realpath(__file__))
@@ -141,39 +133,14 @@ def update_bim_tool_props():

            if is_annotation_tool and (object_type := tool.Drawing.get_annotation_type_object_type(element_type)):
                aprops.object_type = object_type
-                try:
-                    aprops.relating_type_id = str(element_type.id())
-                except TypeError:
-                    # EnumProperty items are rebuilt asynchronously when ifc_class changes;
-                    # this assignment can race a stale item list. Skipping is harmless —
-                    # the UI will resync on the next active_object_callback.
-                    pass
+                aprops.relating_type_id = str(element_type.id())
                return

            if is_bim_tool:
-                try:
-                    props.ifc_class = element_type.is_a()
-                except TypeError:
-                    # ifc_class only lists element/space types present in the model, so an
-                    # unsupported type (e.g. a raw IfcTypeProduct) or a stale item list mid-
-                    # rebuild raises `enum "<class>" not found`. Skip rather than crash the
-                    # handler — it re-fires on the next selection and the panel resyncs.
-                    pass
+                props.ifc_class = element_type.is_a()

-            # Only assign when the target enum is the one that lists this type — otherwise
-            # we hit `enum "<id>" not found in (...)` if the user selects an element of a
-            # different class than the workspace tool was built for (e.g. selecting a wall
-            # while the door tool is active).
-            tool_class_match = TOOLS_TO_CLASSES_MAP.get(current_tool.idname) == element_type.is_a()
-            bim_tool_class_match = is_bim_tool and props.ifc_class == element_type.is_a()
-            if bim_tool_class_match or tool_class_match:
-                try:
-                    props.relating_type_id = str(element_type.id())
-                except TypeError:
-                    # Defensive: the enum item list can lag behind ifc_class assignment
-                    # above. Skipping leaves the panel briefly out of sync rather than
-                    # crashing the handler (which Blender re-fires on every selection).
-                    pass
+            if is_bim_tool or TOOLS_TO_CLASSES_MAP.get(current_tool.idname) == element_type.is_a():
+                props.relating_type_id = str(element_type.id())

    if is_annotation_tool:
        return
@@ -198,9 +165,7 @@ def update_bim_tool_props():
    if AuthoringData.data["active_material_usage"] == "LAYER2":
        x_angle = get_x_angle(extrusion)
        axis = tool.Model.get_wall_axis(obj)["reference"]
-        props.extrusion_depth = core_model.vertical_height_from_extrusion_depth(
-            extrusion.Depth * si_conversion, x_angle
-        )
+        props.extrusion_depth = abs(extrusion.Depth * si_conversion * cos(x_angle))
        props.length = (axis[1] - axis[0]).length
        props.x_angle = x_angle

@@ -391,10 +356,8 @@ def subscribe_to_viewport_shading_changes():
            )


-def _apply_save_file_invariants(scene: bpy.types.Scene) -> None:
-    """Invariants enforced on every load_post: msgbus subscription, IFC owner
-    settings, scene-bound caches, draft-flag healing, multi-instance lock probe,
-    and previews discarded so saved preview state never resurfaces on reopen."""
+@persistent
+def load_post(scene):
    global global_subscription_owner
    active_object_key = bpy.types.LayerObjects, "active"
    bpy.msgbus.subscribe_rna(
@@ -405,24 +368,6 @@ def _apply_save_file_invariants(scene: bpy.types.Scene) -> None:
    ifcopenshell.api.owner.settings.get_application = get_application
    AuthoringData.type_thumbnails = {}

-    tool.Parametric.heal_stale_edit_flags()
-    discard_pending_previews(scene)
-
-    if tool.Ifc.get() and bpy.data.is_saved:
-        props = tool.Blender.get_bim_props()
-        props.has_blend_warning = True
-
-    # Probe the H5 cooked-geometry cache so the multi-instance warning surfaces
-    # right after .blend load. Without this, the lock is only detected when a
-    # mutation triggers ``clear_cache`` — by which time the user has already
-    # made changes that may now conflict with the other Blender instance.
-    if tool.Ifc.get():
-        get_cache_or_detect_lock()
-
-
-def _apply_user_preferences() -> None:
-    """User-preference-driven UI setup: toolbar, BIM workspace, viewport shading
-    subscription, scene-panel hijack, tab layout, snap defaults."""
    preferences = tool.Blender.get_addon_preferences()
    if not preferences.should_setup_toolbar:
        tool.Blender.unregister_toolbar()
@@ -446,21 +391,11 @@ def _apply_user_preferences() -> None:
        tool.Blender.override_scene_panel(panel)
    tool.Blender.setup_tabs()

-    if preferences.should_use_snap and (scene := bpy.context.scene):
-        # Snapping is off by default in Blender, but in BIM, it's more useful to be on
-        scene.tool_settings.use_snap = True
-        # Match default Bonsai snaps
-        scene.tool_settings.snap_elements_base = {"EDGE", "EDGE_PERPENDICULAR", "VERTEX", "EDGE_MIDPOINT", "FACE"}
+    if tool.Ifc.get() and bpy.data.is_saved:
+        props = tool.Blender.get_bim_props()
+        props.has_blend_warning = True

-    tool.Blender.sync_old_preferences()
-
-
-def _install_viewport_overlays() -> None:
-    """Sync every Bonsai viewport decorator to its enabled state.
-
-    Wrapped in uninstall/install of the decorator-cache bump handlers so a
-    decorator's own install path doesn't double-bind to depsgraph_update_post
-    via ``TokenCache`` instances created during their own ``install()``."""
+    # Bonsai overlays
    georeference_props = tool.Georeference.get_georeference_props()
    aggregate_props = tool.Aggregate.get_aggregate_props()
    nest_props = tool.Nest.get_nest_props()
@@ -470,31 +405,23 @@ def _install_viewport_overlays() -> None:
    NestDecorator.uninstall()
    WallAxisDecorator.uninstall()
    SlabDirectionDecorator.uninstall()
-    WallFilletPreviewDecorator.uninstall()
-    uninstall_decorator_cache_handlers()
-    try:
-        if georeference_props.should_visualise:
-            GeoreferenceDecorator.install(bpy.context)
-        if aggregate_props.aggregate_decorator:
-            AggregateDecorator.install(bpy.context)
-        if nest_props.nest_decorator:
-            NestDecorator.install(bpy.context)
-        if model_props.show_wall_axis:
-            WallAxisDecorator.install(bpy.context)
-        if model_props.show_slab_direction:
-            SlabDirectionDecorator.install(bpy.context)
-        if model_props.show_bounding_box:
-            BoundingBoxDecorator.install(bpy.context)
-        # Always-installed: draw() self-polls on Scene.BIMPreviewProperties.
-        # wall_fillet.is_active, so installation has no cost when no preview
-        # is open. No corresponding addon-preference toggle.
-        WallFilletPreviewDecorator.install(bpy.context)
-    finally:
-        install_decorator_cache_handlers()
+    if georeference_props.should_visualise:
+        GeoreferenceDecorator.install(bpy.context)
+    if aggregate_props.aggregate_decorator:
+        AggregateDecorator.install(bpy.context)
+    if nest_props.nest_decorator:
+        NestDecorator.install(bpy.context)
+    if model_props.show_wall_axis:
+        WallAxisDecorator.install(bpy.context)
+    if model_props.show_slab_direction:
+        SlabDirectionDecorator.install(bpy.context)
+    if model_props.show_bounding_box:
+        BoundingBoxDecorator.install(bpy.context)

+    if preferences.should_use_snap and (scene := bpy.context.scene):
+        # Snapping is off by default in Blender, but in BIM, it's more useful to be on
+        scene.tool_settings.use_snap = True
+        # Match default Bonsai snaps
+        scene.tool_settings.snap_elements_base = {"EDGE", "EDGE_PERPENDICULAR", "VERTEX", "EDGE_MIDPOINT", "FACE"}

-@persistent
-def load_post(scene):
-    _apply_save_file_invariants(scene)
-    _apply_user_preferences()
-    _install_viewport_overlays()
+    tool.Blender.sync_old_preferences()
@@ -64,44 +64,6 @@ class TransactionStep(TypedDict):
    operations: list[Operation]


-# Set when ``IfcStore.get_cache`` observes an external lock on the HDF5 cache —
-# signal that another Blender process has the same IFC file open. Project panel
-# polls ``is_cache_locked_by_other_process`` to warn the user. The dismissed
-# flag is sticky per-session so the warning doesn't re-nag once the user has
-# acknowledged it.
-_cache_locked_by_other_process: bool = False
-_multi_instance_warning_dismissed: bool = False
-
-
-def is_cache_locked_by_other_process() -> bool:
-    return _cache_locked_by_other_process and not _multi_instance_warning_dismissed
-
-
-def dismiss_multi_instance_warning() -> None:
-    global _multi_instance_warning_dismissed
-    _multi_instance_warning_dismissed = True
-
-
-def get_cache_or_detect_lock() -> ifcopenshell.geom.serializers.hdf5 | None:
-    """Like ``IfcStore.get_cache`` but tracks the multi-instance lock flag — sets
-    it on ``PermissionError``, clears it (along with the dismiss flag) when a
-    subsequent call succeeds. Returns ``None`` on lock; other exceptions
-    propagate. Callers that don't need the warning side effect can use
-    ``IfcStore.get_cache`` directly."""
-    global _cache_locked_by_other_process, _multi_instance_warning_dismissed
-    try:
-        cache = IfcStore.get_cache()
-    except PermissionError:
-        _cache_locked_by_other_process = True
-        return None
-    if _cache_locked_by_other_process:
-        # Lock released — clear both flags so a future re-locking re-surfaces
-        # the warning rather than staying suppressed by the previous dismiss.
-        _cache_locked_by_other_process = False
-        _multi_instance_warning_dismissed = False
-    return cache
-
-
 class IfcStore:
    path: str = ""
    """Should be set only using ``tool.Ifc.set_path``."""
@@ -234,7 +196,7 @@ class IfcStore:
                shutil.copy2(IfcStore.cache_path, new_cache_path)
            except PermissionError:
                pass  # Well we tried. No cache for you!
-        get_cache_or_detect_lock()
+        IfcStore.get_cache()

    @staticmethod
    def load_file(path: str) -> None:
@@ -552,7 +514,6 @@ class IfcStore:
                    BrickStore.end_transaction()
                IfcStore.end_transaction(operator)
                bonsai.bim.handler.refresh_ui_data()
-                tool.Parametric.refresh_post_commit()

                if method == "MODAL":
                    cls.modal_in_progress = False
@@ -101,7 +101,7 @@ class AggregateDecorator:
        cls.is_installed = False

    def dotted_line_shader(self):
-        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")
+        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")  # ty:ignore[too-many-positional-arguments]
        vert_out.smooth("FLOAT", "v_ArcLength")

        shader_info = gpu.types.GPUShaderCreateInfo()
@@ -139,7 +139,6 @@ class BIMAggregateProperties(PropertyGroup):
    previous_editing_aggregate: PointerProperty(name="Editing Aggregate", type=bpy.types.Object)
    editing_objects: CollectionProperty(type=Objects)
    not_editing_objects: CollectionProperty(type=Objects)
-    previously_selected_objects: CollectionProperty(type=Objects)
    aggregate_decorator: BoolProperty(
        name="Display Aggregate",
        default=False,
@@ -156,6 +155,5 @@ class BIMAggregateProperties(PropertyGroup):
        previous_editing_aggregate: Union[bpy.types.Object, None]
        editing_objects: bpy.types.bpy_prop_collection_idprop[Objects]
        not_editing_objects: bpy.types.bpy_prop_collection_idprop[Objects]
-        previously_selected_objects: bpy.types.bpy_prop_collection_idprop[Objects]
        aggregate_decorator: bool
        previous_state: bool
@@ -295,13 +295,13 @@ class ExplorerShowUIPopup(bpy.types.Operator):
    bl_description = "Show Explorer UI to select element as attribute value or edit it."
    bl_options = {"REGISTER", "UNDO"}

-    ifc_class: bpy.props.StringProperty()
+    ifc_class: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
    """Element IFC class."""
-    attribute_name: bpy.props.StringProperty()
+    attribute_name: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
    """IFC class attribute name."""
-    data_path: bpy.props.StringProperty()
+    data_path: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
    """Full data path"""
-    preselect_ifc_id: bpy.props.IntProperty(options={"SKIP_SAVE"})
+    preselect_ifc_id: bpy.props.IntProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]
    """IFC id to preselect in the popup."""

    if TYPE_CHECKING:
@@ -41,7 +41,7 @@ class BIMAttributeProperties(PropertyGroup):


 class ExplorerEntity(PropertyGroup):
-    ifc_definition_id: bpy.props.IntProperty()
+    ifc_definition_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        ifc_definition_id: int
@@ -60,7 +60,7 @@ class BIMExplorerProperties(PropertyGroup):
            self.property_unset("editing_entity_id")
            self.entity_attributes.clear()

-    is_loaded: BoolProperty(
+    is_loaded: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Toggle Explorer UI",
        update=update_is_loaded,
    )
@@ -76,15 +76,15 @@ class BIMExplorerProperties(PropertyGroup):
    def update_ifc_class(self, context: object) -> None:
        tool.Attribute.refresh_uilist_entities()

-    ifc_class: EnumProperty(
+    ifc_class: EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="IFC Class To Search",
        items=get_ifc_class,
        update=update_ifc_class,
    )
-    entities: CollectionProperty(type=ExplorerEntity)
-    active_entity_index: IntProperty()
-    editing_entity_id: IntProperty()
-    entity_attributes: CollectionProperty(type=Attribute)
+    entities: CollectionProperty(type=ExplorerEntity)  # pyright: ignore[reportRedeclaration]
+    active_entity_index: IntProperty()  # pyright: ignore[reportRedeclaration]
+    editing_entity_id: IntProperty()  # pyright: ignore[reportRedeclaration]
+    entity_attributes: CollectionProperty(type=Attribute)  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        is_loaded: bool
@@ -48,14 +48,12 @@ def draw_ui(context: bpy.types.Context, layout: bpy.types.UILayout, attributes)
        row = layout.row()
        op = row.operator("bim.enable_editing_attributes", icon="GREASEPENCIL", text="Edit")

-        element = tool.Ifc.get_entity(obj)
-        key_prefix = "type." if (element and element.is_a("IfcTypeObject")) else ""
        for attribute in attributes:
            row = layout.row(align=True)
            row.label(text=attribute["name"])
            value = bonsai.bim.helper.get_display_value(attribute["value"])
            op = row.operator("bim.select_similar", text=value, icon="NONE", emboss=False)
-            op.key = key_prefix + attribute["name"]
+            op.key = attribute["name"]

    # TODO: reimplement, see #1222
    # if "IfcSite/" in context.active_object.name or "IfcBuilding/" in context.active_object.name:
@@ -201,10 +201,16 @@ class ExecuteIfcClash(bpy.types.Operator, ExportHelper):
        "ALT+click to run a quick clash without selecting a file to save."
    )

-    filter_glob: bpy.props.StringProperty(default="*.bcf;*.json", options={"HIDDEN"})
-    format: bpy.props.EnumProperty(name="Format", items=[(i, i, "") for i in ("bcf", "json")])
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH", options={"SKIP_SAVE"})
-    quick_clash: bpy.props.BoolProperty(
+    filter_glob: bpy.props.StringProperty(  # pyright: ignore[reportRedeclaration]
+        default="*.bcf;*.json", options={"HIDDEN"}
+    )
+    format: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+        name="Format", items=[(i, i, "") for i in ("bcf", "json")]
+    )
+    filepath: bpy.props.StringProperty(  # pyright: ignore[reportRedeclaration]
+        subtype="FILE_PATH", options={"SKIP_SAVE"}
+    )
+    quick_clash: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        options={"SKIP_SAVE"},
    )

@@ -37,12 +37,12 @@ from bonsai.bim.prop import BIMFilterGroup, StrProperty


 class ClashSource(PropertyGroup):
-    name: StringProperty(
+    name: StringProperty(  # pyright: ignore[reportRedeclaration]
        name="File",
        description="Absolute filepath to existing .ifc file to use as a clash source.",
    )
-    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")
-    mode: EnumProperty(
+    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")  # pyright: ignore[reportRedeclaration]
+    mode: EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[
            ("a", "All Elements", "All elements will be used for clashing"),
            ("i", "Include", "Only the selected elements are included for clashing"),
@@ -62,7 +62,7 @@ class Clash(PropertyGroup):
    b_global_id: StringProperty(name="B")
    a_name: StringProperty(name="A Name")
    b_name: StringProperty(name="B Name")
-    clash_type: EnumProperty(
+    clash_type: EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Clash Type",
        items=tuple((i, i, "") for i in CLASH_TYPE_ITEMS),
    )
@@ -87,7 +87,7 @@ class CopyCostSchedule(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Copy Cost Schedule"
    bl_description = "Create a duplicate of the provided cost schedule."
    bl_options = {"REGISTER", "UNDO"}
-    cost_schedule: bpy.props.IntProperty()
+    cost_schedule: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        cost_schedule: int
@@ -260,14 +260,14 @@ class CreateAllShapes(bpy.types.Operator):
    )
    bl_options = {"REGISTER"}

-    geometry_library: bpy.props.EnumProperty(
+    geometry_library: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Geometry Library",
        description="Geometry library to use for testing shape creation.",
        items=[(i, i, "") for i in get_args(ifcopenshell.geom.GEOMETRY_LIBRARY)],
        # By default use the same library as used for importing ifc project.
        default="hybrid-cgal-simple-opencascade",
    )
-    custom_geometry_library: bpy.props.StringProperty(
+    custom_geometry_library: bpy.props.StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Custom Geometry Library",
        description="Provide a custom geometry library name, will override the 'geometry library' property.",
    )
@@ -781,7 +781,7 @@ class PurgeUnusedObjects(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Purge Unused Objects"
    bl_options = {"REGISTER", "UNDO"}

-    object_type: bpy.props.EnumProperty(
+    object_type: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Object Type",
        items=((s, s.capitalize(), "") for s in get_args(tool.Debug.PurgeMergeObjectType)),
    )
@@ -827,7 +827,7 @@ class MergeIdenticalObjects(bpy.types.Operator, tool.Ifc.Operator):
    )
    bl_options = {"REGISTER", "UNDO"}

-    object_type: bpy.props.EnumProperty(
+    object_type: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Object Type",
        items=((s, s.capitalize(), "") for s in get_args(tool.Debug.PurgeMergeObjectType)),
    )
@@ -1073,7 +1073,7 @@ class ChangeLogLevel(bpy.types.Operator):
    bl_options = {"REGISTER"}
    bl_description = "Change general log level across all Python code in Blender"

-    log_level: bpy.props.EnumProperty(
+    log_level: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Log Level",
        items=[(i, i, "") for i in get_args(LogLevelType)],
        default="WARNING",
@@ -15,8 +15,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import bpy

@@ -138,32 +136,14 @@ classes = (
    gizmos.GizmoArrow2D,
    gizmos.GizmoCone,
    gizmos.GizmoDimension,
-    gizmos.GizmoLockOpen,
-    gizmos.GizmoLockClosed,
+    gizmos.GizmoLock,
    gizmos.GizmoArc,
-    gizmos.GizmoFillet,
-    gizmos.GizmoWallCornerIcon,
-    gizmos.GizmoWallTeeIcon,
    gizmos.GizmoPen,
    gizmos.GizmoValidate,
    gizmos.GizmoCancel,
    gizmos.GizmoPlus,
    gizmos.GizmoMinus,
-    gizmos.GizmoTrash,
-    gizmos.GizmoArrayParent,
-    gizmos.GizmoArrayAll,
-    gizmos.GizmoArrayLayerIndicator,
-    gizmos.GizmoMerge,
-    gizmos.GizmoSplit,
-    gizmos.GizmoUnjoin,
-    gizmos.GizmoExtend,
-    gizmos.GizmoExtendVertical,
-    gizmos.GizmoOffsetExterior,
-    gizmos.GizmoOffsetCenter,
-    gizmos.GizmoOffsetInterior,
-    gizmos.GizmoAddOpening,
    gizmos.GizmoCycle,
-    gizmos.GizmoMenu,
    # Drawing-specific gizmos
    gizmos.UglyDotGizmo,
    gizmos.ExtrusionGuidesGizmo,
@@ -313,7 +313,7 @@ def format_distance(
            if not feet and not add_inches:
                tx_dist += str(feet) + "'"

-            if not feet and add_inches and unit_length != "INCHES":
+            if not feet and add_inches:
                if value < 0:
                    tx_dist += "-0' - "
                else:
@@ -246,17 +246,17 @@ class CreateDrawing(bpy.types.Operator):
        + "Add the CTRL modifier to optionally open drawings to view them as\n"
        + "they are created"
    )
-    print_all: bpy.props.BoolProperty(
+    print_all: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Print All",
        default=False,
        options={"SKIP_SAVE"},
    )
-    open_viewer: bpy.props.BoolProperty(
+    open_viewer: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Open in Viewer",
        default=False,
        options={"SKIP_SAVE"},
    )
-    sync: bpy.props.BoolProperty(
+    sync: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Sync Before Creating Drawing",
        description="Could save some time if you're sure IFC and current Blender session are already in sync",
        default=True,
@@ -2322,14 +2322,14 @@ class ActivateDrawingBase(tool.Ifc.Operator):
        + "SHIFT+CLICK to load a quick preview of the drawing view"
    )

-    drawing: bpy.props.IntProperty()
-    should_view_from_camera: bpy.props.BoolProperty(
+    drawing: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    should_view_from_camera: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Should View From Camera",
        description="Move view to the activated drawing's camera position.",
        default=True,
        options={"SKIP_SAVE"},
    )
-    use_quick_preview: bpy.props.BoolProperty(
+    use_quick_preview: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Use Quick Preview",
        description="Just move the camera to the drawing view, without loading anything else.",
        default=False,
@@ -3635,12 +3635,14 @@ class ToggleTargetView(bpy.types.Operator):
    bl_label = "Toggle Target View"
    bl_options = {"REGISTER", "UNDO"}

-    target_view: bpy.props.StringProperty()
-    toggle_all: bpy.props.BoolProperty(
+    target_view: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    toggle_all: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        default=False,
        options={"SKIP_SAVE"},
    )
-    option: bpy.props.EnumProperty(items=[(i, i, "") for i in get_args(ToggleOption)])
+    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+        items=[(i, i, "") for i in get_args(ToggleOption)]
+    )

    if TYPE_CHECKING:
        target_view: str
@@ -860,13 +860,13 @@ class BIMTextProperties(PropertyGroup):
    is_editing: BoolProperty(name="Is Editing", default=False)
    literals: CollectionProperty(name="Literals", type=LiteralProps)
    newline_at: IntProperty(name="Newline At")
-    symbol: EnumProperty(
+    symbol: EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Symbol",
        description="Symbol from symbols.svg to use for this text.",
        items=[(s, s, "") for s in ["NO SYMBOL", "CUSTOM SYMBOL"] + tool.Drawing.DEFAULT_SYMBOLS],
        default="NO SYMBOL",
    )
-    custom_symbol: StringProperty(
+    custom_symbol: StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Custom Symbol",
        description="Non-default symbol to use for this text.",
    )
@@ -69,6 +69,7 @@ classes = (
    operator.RemoveRepresentation,
    operator.RemoveRepresentationItem,
    operator.RemoveRepresentationItemFromShapeAspect,
+    operator.SelectByRepresentationType,
    operator.SelectConnection,
    operator.SelectRepresentationItem,
    operator.SwitchRepresentation,
@@ -44,12 +44,8 @@ class ViewportData:

    @classmethod
    def load(cls):
-        # Populate data BEFORE flipping is_loaded so a raising ``mode()``
-        # call doesn't leave the class half-loaded (flag set, dict empty).
-        # Subsequent items-callback invocations skip load() on a True flag
-        # and would hit ``cls.data["mode"]`` → KeyError.
-        cls.data = {"mode": cls.mode()}
        cls.is_loaded = True
+        cls.data = {"mode": cls.mode()}

    @classmethod
    def mode(cls) -> tool.Blender.BLENDER_ENUM_ITEMS:
@@ -60,7 +60,6 @@ import bonsai.core.root
 import bonsai.core.spatial
 import bonsai.tool as tool
 from bonsai.bim.ifc import IfcStore
-from bonsai.bim.module.model import preview_base
 from bonsai.bim.module.model.decorator import ProfileDecorator

 if TYPE_CHECKING:
@@ -86,7 +85,7 @@ class EditObjectPlacement(bpy.types.Operator, tool.Ifc.Operator):
 class OverrideMeshSeparate(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.override_mesh_separate"
    bl_label = "IFC Mesh Separate"
-    blender_op = bpy.ops.mesh.separate.get_rna_type()  # ty: ignore[missing-argument]
+    blender_op = bpy.ops.mesh.separate.get_rna_type()
    bl_description = blender_op.description + ".\nAlso makes sure changes are in sync with IFC."
    bl_options = {"REGISTER", "UNDO"}
    blender_type_prop = blender_op.properties["type"]
@@ -247,7 +246,7 @@ class OverrideMeshSeparate(bpy.types.Operator, tool.Ifc.Operator):

 class OverrideOriginSet(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.override_origin_set"
-    blender_op = bpy.ops.object.origin_set.get_rna_type()  # ty: ignore[missing-argument]
+    blender_op = bpy.ops.object.origin_set.get_rna_type()
    bl_label = "IFC Origin Set"
    bl_description = (
        blender_op.description + ".\nAlso makes sure changes are in sync with IFC (operator works only on IFC objects)"
@@ -418,6 +417,55 @@ class SelectConnection(bpy.types.Operator, tool.Ifc.Operator):
        core.select_connection(tool.Geometry, connection=tool.Ifc.get().by_id(self.connection))


+class SelectByRepresentationType(bpy.types.Operator):
+    bl_idname = "bim.select_by_representation_type"
+    bl_label = "Select By Representation Type"
+    bl_description = (
+        "Select objects whose active representation matches this type. "
+        "Ctrl+Click to also include objects that have this type in any representation (active or not)"
+    )
+    bl_options = {"REGISTER", "UNDO"}
+    representation_type: bpy.props.StringProperty()
+    select_inactive: bpy.props.BoolProperty(default=False, options={"SKIP_SAVE"})
+
+    def invoke(self, context, event):
+        self.select_inactive = event.ctrl
+        return self.execute(context)
+
+    def execute(self, context):
+        ifc = tool.Ifc.get()
+        if not ifc:
+            return {"CANCELLED"}
+        # Strip the "*" suffix used for mapped/resolved representations.
+        target_type = self.representation_type.rstrip("*")
+        matched = 0
+        for obj in context.visible_objects:
+            element = tool.Ifc.get_entity(obj)
+            if not element:
+                obj.select_set(False)
+                continue
+            if self.select_inactive:
+                # Ctrl: match any representation on the element, active or not.
+                has_type = any(
+                    (ifcopenshell.util.representation.resolve_representation(rep).RepresentationType or "") == target_type
+                    for rep in ifcopenshell.util.representation.get_representations_iter(element)
+                )
+            else:
+                # Default: match only the currently active (displayed) representation.
+                active_rep = tool.Geometry.get_active_representation(obj)
+                if active_rep is None:
+                    obj.select_set(False)
+                    continue
+                resolved = ifcopenshell.util.representation.resolve_representation(active_rep)
+                has_type = (resolved.RepresentationType or "") == target_type
+            obj.select_set(has_type)
+            if has_type:
+                matched += 1
+        mode = "any representation" if self.select_inactive else "active representation"
+        self.report({"INFO"}, f"Selected {matched} object(s) with RepresentationType '{target_type}' ({mode})")
+        return {"FINISHED"}
+
+
 class RemoveConnection(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_connection"
    bl_label = "Remove Connection"
@@ -802,7 +850,7 @@ def calc_delete_is_batch(ifc_file: ifcopenshell.file, context: bpy.types.Context
 class OverrideDelete(bpy.types.Operator):
    bl_idname = "bim.override_object_delete"
    bl_label = "IFC Delete"
-    blender_op = bpy.ops.object.delete.get_rna_type()  # ty: ignore[missing-argument]
+    blender_op = bpy.ops.object.delete.get_rna_type()
    bl_description = (
        blender_op.description
        + ".\nAlso makes sure changes in sync with IFC."
@@ -822,7 +870,7 @@ class OverrideDelete(bpy.types.Operator):
    def poll(cls, context):
        # Match `object.delete` poll for consistency.
        # `object.delete` poll just checks for OBJECT mode.
-        poll = bpy.ops.object.delete.poll()  # ty: ignore[missing-argument]
+        poll = bpy.ops.object.delete.poll()
        if poll:
            return True
        cls.poll_message_set("Only available in OBJECT mode")
@@ -1046,7 +1094,7 @@ class SelectedIdsData(NamedTuple):
 class OverrideOutlinerDelete(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.override_outliner_delete"
    bl_label = "IFC Delete"
-    blender_op = bpy.ops.outliner.delete.get_rna_type()  # ty: ignore[missing-argument]
+    blender_op = bpy.ops.outliner.delete.get_rna_type()
    bl_description = (
        blender_op.description
        + ".\nAlso makes sure changes in sync with IFC."
@@ -1061,7 +1109,7 @@ class OverrideOutlinerDelete(bpy.types.Operator, tool.Ifc.Operator):
    def poll(cls, context) -> bool:
        # Match `outliner.delete` poll for consistency.
        # `outliner.delete` just checks `area.type` == `OUTLINER`.
-        poll = bpy.ops.outliner.delete.poll()  # ty: ignore[missing-argument]
+        poll = bpy.ops.outliner.delete.poll()
        if poll:
            return True
        cls.poll_message_set("Only available from Outliner.")
@@ -1165,7 +1213,7 @@ class OverrideDuplicateMove(bpy.types.Operator):
    def poll(cls, context) -> bool:
        # Match `object.duplicate_move` poll for consistency.
        # `object.duplicate_move` poll checks for OBJECT mode.
-        poll = bpy.ops.object.duplicate_move.poll()  # ty: ignore[missing-argument]
+        poll = bpy.ops.object.duplicate_move.poll()
        if poll:
            return True
        cls.poll_message_set("Only available in OBJECT mode")
@@ -1184,7 +1232,7 @@ class OverrideDuplicateMove(bpy.types.Operator):
        operator: bpy.types.Operator, context: bpy.types.Context, linked: bool = False
    ) -> set["rna_enums.OperatorReturnItems"]:
        # Deep magick from the dawn of time
-        if tool.Ifc.get() and tool.Model.has_selected_ifc_objects(include_active=False):
+        if tool.Ifc.get():
            IfcStore.execute_ifc_operator(operator, context)
            return {"FINISHED"}

@@ -1288,11 +1336,6 @@ class OverrideDuplicateMove(bpy.types.Operator):
                            if part_obj:
                                all_objects_to_select.add(part_obj)

-        # Non-IFC duplicates aren't tracked in old_to_new but are left selected by duplicate_ifc_objects
-        all_objects_to_select.update(
-            obj for obj in context.selected_objects if not tool.Ifc.get_entity(obj)
-        )
-
        # Deselect everything first
        bpy.ops.object.select_all(action="DESELECT")

@@ -1914,7 +1957,7 @@ class RefreshLinkedAggregate(bpy.types.Operator, tool.Ifc.Operator):
 class OverrideJoin(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.override_object_join"
    bl_label = "IFC Join"
-    blender_op = bpy.ops.mesh.separate.get_rna_type()  # ty: ignore[missing-argument]
+    blender_op = bpy.ops.mesh.separate.get_rna_type()
    bl_description = (
        blender_op.description
        + ".\nAlso makes sure changes are in sync with IFC."
@@ -1932,7 +1975,7 @@ class OverrideJoin(bpy.types.Operator, tool.Ifc.Operator):

    @classmethod
    def poll(cls, context):
-        if not bpy.ops.object.join.poll():  # ty: ignore[missing-argument]
+        if not bpy.ops.object.join.poll():
            cls.poll_message_set("Active object is not EDITable.")
            return False
        if not context.selected_editable_objects:
@@ -2229,8 +2272,6 @@ class OverrideEscape(bpy.types.Operator):
            bpy.ops.bim.hide_all_openings()
        elif tool.Aggregate.get_aggregate_props().in_aggregate_mode:
            bpy.ops.bim.disable_aggregate_mode()
-        elif preview_base.try_cancel_active_preview(context):
-            pass
        elif active_object := context.active_object:
            if tool.Blender.Modifier.try_canceling_editing_modifier_parameters_or_path(active_object):
                pass
@@ -2272,8 +2313,6 @@ class OverrideModeSetEdit(bpy.types.Operator, tool.Ifc.Operator):
                gprops = tool.Geometry.get_geometry_props()
                if gprops.representation_obj:
                    tool.Geometry.disable_item_mode()
-                    if active_obj := bpy.context.active_object:
-                        active_obj.select_set(False)
                else:
                    bonsai.core.aggregate.exit_aggregate_mode(tool.Aggregate)
                return {"FINISHED"}
@@ -2360,7 +2399,6 @@ class OverrideModeSetEdit(bpy.types.Operator, tool.Ifc.Operator):
            and usage in ("LAYER1", "LAYER2")
        ):
            self.report({"INFO"}, f"Parametric {usage} elements cannot be edited directly")
-            obj.select_set(False)
        elif item.is_a("IfcSweptAreaSolid"):
            tool.Geometry.sync_item_positions()
            res = tool.Model.import_profile((profile := item.SweptArea), obj=obj)
@@ -2369,7 +2407,6 @@ class OverrideModeSetEdit(bpy.types.Operator, tool.Ifc.Operator):
                    {"INFO"},
                    f"Couldn't import profile, editing it directly is not yet supported. Failing profile: {profile}.",
                )
-                obj.select_set(False)
                return
            tool.Ifc.link(item, obj.data)
            self.enable_edit_mode(context)
@@ -19,7 +19,6 @@
 import bpy
 from bpy.types import Menu, Panel, UIList

-import ifcopenshell.util.unit
 import bonsai.bim
 import bonsai.tool as tool
 from bonsai.bim.helper import prop_with_search
@@ -153,7 +152,12 @@ class BIM_PT_representations(Panel):
            row.label(text=representation["ContextType"])
            row.label(text=representation["ContextIdentifier"])
            row.label(text=representation["TargetView"])
-            row.label(text=representation["RepresentationType"])
+            op = row.operator(
+                "bim.select_by_representation_type",
+                text=representation["RepresentationType"],
+                emboss=False,
+            )
+            op.representation_type = representation["RepresentationType"]
            op = row.operator(
                "bim.switch_representation",
                icon="FILE_REFRESH" if representation["is_active"] else "OUTLINER_DATA_MESH",
@@ -484,32 +488,10 @@ class BIM_PT_placement(Panel):
            row.label(text="No Object Placement Found")
            return

-        is_imperial = False
-        if tool.Ifc.get():
-            length_unit = ifcopenshell.util.unit.get_project_unit(tool.Ifc.get(), "LENGTHUNIT")
-            if length_unit and length_unit.Name != "METRE":
-                is_imperial = True
-
        row = self.layout.row()
-        row.label(text="Location:")
-
-        if is_imperial:
-            loc = context.active_object.location
-            for i, (axis, comp) in enumerate(zip("XYZ", (loc.x, loc.y, loc.z))):
-                split = self.layout.split(factor=0.6)
-                split.prop(context.active_object, "location", index=i, text=axis)
-                sub = split.row()
-                sub.enabled = False
-                sub.alignment = "LEFT"
-                sub.label(text=tool.Unit.format_distance(comp))
-        else:
-            for i, axis in enumerate("XYZ"):
-                self.layout.prop(context.active_object, "location", index=i, text=axis)
-
+        row.prop(context.active_object, "location", text="Location")
        row = self.layout.row()
-        row.label(text="Rotation:")
-        for i, axis in enumerate("XYZ"):
-            self.layout.prop(context.active_object, "rotation_euler", index=i, text=axis)
+        row.prop(context.active_object, "rotation_euler", text="Rotation")

        if props.blender_offset_type != "NONE":
            row = self.layout.row(align=True)
@@ -43,11 +43,11 @@ class ToggleGroup(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Toggle Group"
    bl_options = {"REGISTER", "UNDO"}

-    ifc_definition_id: bpy.props.IntProperty()
-    group_type: bpy.props.EnumProperty(
+    ifc_definition_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    group_type: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[(i, i, "") for i in get_args(tool.Group.GroupType)],
    )
-    option: bpy.props.EnumProperty(
+    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[(i, i, "") for i in get_args(tool.Group.ToggleOption)],
    )

@@ -314,7 +314,7 @@ class SelectConflictEntity(bpy.types.Operator):
    bl_idname = "ifcgit.select_conflict_entity"
    bl_options = {"REGISTER"}

-    step_id: bpy.props.IntProperty()
+    step_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        step_id: int
@@ -515,7 +515,7 @@ class RunGitDiff(bpy.types.Operator):
    )
    bl_options = set()

-    save_to_temp: bpy.props.BoolProperty(options={"SKIP_SAVE"})
+    save_to_temp: bpy.props.BoolProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        save_to_temp: bool
@@ -547,7 +547,7 @@ class RenameBranch(bpy.types.Operator):
    bl_idname = "ifcgit.rename_branch"
    bl_options = {"REGISTER"}

-    new_name: bpy.props.StringProperty(name="New name")
+    new_name: bpy.props.StringProperty(name="New name")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        new_name: str
@@ -272,21 +272,21 @@ class RadianceRender(bpy.types.Operator):
                    + '''" map_u map_v
 0
 1 0.5
-
+ 
 # This is a multiplier to colour balance the env map
 # In this case, it provides a rough ground luminance from 3k-5k
 env_map colorfunc env_colour
 4 100 100 100 .
 0
 0
-
+ 
 # .37 .57 1.5 is measured from a HDRI image
 # It is multiplied by a factor such that grey(r,g,b) = 1
 skyfunc colorfunc sky_colour
 4 .64 .99 2.6 .
 0
 0
-
+ 
 void mixpict composite
 7 env_colour sky_colour grey "'''
                    + hdr_mask_path
@@ -295,22 +295,22 @@ void mixpict composite
                    + """" map_u map_v
 0
 2 0.5 1
-
+ 
 composite glow env_map_glow
 0
 0
 4 1 1 1 0
-
+ 
 env_map_glow source sky
 0
 0
 4 0 0 1 180
-
+ 
 env_colour glow ground_glow
 0
 0
 4 1 1 1 0
-
+ 
 ground_glow source ground
 0
 0
@@ -566,7 +566,7 @@ class LightPickCoordinates(bpy.types.Operator):
    )
    bl_options = {"REGISTER", "UNDO"}

-    use_current_location: bpy.props.BoolProperty(options={"SKIP_SAVE"})
+    use_current_location: bpy.props.BoolProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        use_current_location: bool
@@ -630,23 +630,13 @@ class EditAssignedMaterial(bpy.types.Operator, tool.Ifc.Operator):
                    slab.DumbSlabPlaner().regenerate_from_layer_set(layer_set)

            if material_set_usage.is_a("IfcMaterialProfileSetUsage"):
-                if "CardinalPoint" in attributes and attributes["CardinalPoint"] is not None:
+                if "CardinalPoint" in attributes:
                    attributes["CardinalPoint"] = int(attributes["CardinalPoint"])
                ifcopenshell.api.material.edit_profile_usage(
                    self.file,
                    usage=material_set_usage,
                    attributes=attributes,
                )
-
-                for obj in objects:
-                    obj_element = tool.Ifc.get_entity(obj)
-                    if not obj_element:
-                        continue
-                    obj_material_usage = ifcopenshell.util.element.get_material(obj_element)
-                    if obj_material_usage and obj_material_usage.is_a("IfcMaterialProfileSetUsage"):
-                        obj_material_usage.CardinalPoint = material_set_usage.CardinalPoint
-                        obj_material_usage.ReferenceExtent = material_set_usage.ReferenceExtent
-
                model_profile.DumbProfileRecalculator().recalculate(objects)

        bpy.ops.bim.disable_editing_assigned_material(obj=active_obj.name)
@@ -136,7 +136,7 @@ class SplitAlongEdge(bpy.types.Operator, tool.Ifc.Operator):
        "Will unassign element from a type if type has a representation."
    )
    bl_options = {"REGISTER", "UNDO"}
-    mode: bpy.props.EnumProperty(
+    mode: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        default="BOOLEAN",
        items=tuple((i, i, "") for i in get_args(SplitAlongEdgeMode)),
    )
@@ -359,7 +359,7 @@ class ConfirmQuickFavoriteOperator(bpy.types.Operator):
    bl_idname = "bim.confirm_quick_favorite_operator"
    bl_label = "Confirm Operator"
    bl_options = {"REGISTER", "UNDO"}
-    index: bpy.props.IntProperty()
+    index: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        index: int
@@ -452,8 +452,10 @@ class MoveQuickFavoritesItem(bpy.types.Operator):
    bl_idname = "bim.move_quick_favorites_item"
    bl_label = "Move Quick Favorites Item"
    bl_options = {"REGISTER", "UNDO"}
-    index: bpy.props.IntProperty()
-    direction: bpy.props.EnumProperty(items=[("UP", "Up", ""), ("DOWN", "Down", "")])
+    index: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    direction: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+        items=[("UP", "Up", ""), ("DOWN", "Down", "")]
+    )

    if TYPE_CHECKING:
        index: int
@@ -472,7 +474,7 @@ class RemoveQuickFavoritesItem(bpy.types.Operator):
    bl_idname = "bim.remove_quick_favorites_item"
    bl_label = "Remove Quick Favorites Item"
    bl_options = {"REGISTER", "UNDO"}
-    index: bpy.props.IntProperty()
+    index: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        index: int
@@ -36,9 +36,9 @@ QuickFavoriteValueType = Literal["float_value", "bool_value", "int_value", "stri


 class QuickFavoriteEnumItem(PropertyGroup):
-    name: StringProperty(name="Name", default="")
-    display_name: StringProperty(name="Display Name", default="")
-    description: StringProperty(name="Description", default="")
+    name: StringProperty(name="Name", default="")  # pyright: ignore[reportRedeclaration]
+    display_name: StringProperty(name="Display Name", default="")  # pyright: ignore[reportRedeclaration]
+    description: StringProperty(name="Description", default="")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        name: str
@@ -51,19 +51,19 @@ def get_enum_items(self: "QuickFavoriteProperty", context: bpy.types.Context | N


 class QuickFavoriteProperty(PropertyGroup):
-    name: StringProperty(name="Name", default="")
-    display_name: StringProperty(name="Display Name", default="")
-    value_prop: EnumProperty(
+    name: StringProperty(name="Name", default="")  # pyright: ignore[reportRedeclaration]
+    display_name: StringProperty(name="Display Name", default="")  # pyright: ignore[reportRedeclaration]
+    value_prop: EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Value Prop",
        items=tuple((v, v, "") for v in get_args(QuickFavoriteValueType)),
    )
-    string_value: StringProperty(name="String Value", default="")
-    float_value: FloatProperty(name="Float Value", default=0.0)
-    int_value: IntProperty(name="Int Value", default=0)
-    bool_value: BoolProperty(name="Bool Value", default=False)
-    enum_value: EnumProperty(name="Enum Value", items=get_enum_items)
-    enum_items: CollectionProperty(type=QuickFavoriteEnumItem)
-    is_active: BoolProperty(
+    string_value: StringProperty(name="String Value", default="")  # pyright: ignore[reportRedeclaration]
+    float_value: FloatProperty(name="Float Value", default=0.0)  # pyright: ignore[reportRedeclaration]
+    int_value: IntProperty(name="Int Value", default=0)  # pyright: ignore[reportRedeclaration]
+    bool_value: BoolProperty(name="Bool Value", default=False)  # pyright: ignore[reportRedeclaration]
+    enum_value: EnumProperty(name="Enum Value", items=get_enum_items)  # pyright: ignore[reportRedeclaration]
+    enum_items: CollectionProperty(type=QuickFavoriteEnumItem)  # pyright: ignore[reportRedeclaration]
+    is_active: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Is Active",
        description="Only active properties will be added to the operator when invoked from Quick Favorites",
        default=False,
@@ -100,20 +100,20 @@ def get_operator_suggestions(self: "QuickFavoritesItem", context: bpy.types.Cont


 class QuickFavoritesItem(PropertyGroup):
-    is_expanded: BoolProperty(name="Is Expanded", default=False)
-    search: StringProperty(
+    is_expanded: BoolProperty(name="Is Expanded", default=False)  # pyright: ignore[reportRedeclaration]
+    search: StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Search",
        default="",
        search=get_operator_suggestions,
        # Resetting `search_options`, allowing users only to use suggestions.
        search_options=set(),
    )
-    properties: CollectionProperty(type=QuickFavoriteProperty)
-    operator_id: StringProperty(
+    properties: CollectionProperty(type=QuickFavoriteProperty)  # pyright: ignore[reportRedeclaration]
+    operator_id: StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Operator ID",
        default="",
    )
-    label: StringProperty(
+    label: StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Label",
        description="Label that will be used in Quick Favorites for this operator",
        default="",
@@ -139,15 +139,15 @@ class QuickFavoritesItem(PropertyGroup):


 class BIMMiscProperties(PropertyGroup):
-    total_storeys: IntProperty(
+    total_storeys: IntProperty(  # pyright: ignore[reportRedeclaration]
        name="Total Storeys",
        description="Number of storeys above object's storey to take into account for resizing",
        default=1,
    )
-    override_colour: FloatVectorProperty(
+    override_colour: FloatVectorProperty(  # pyright: ignore[reportRedeclaration]
        name="Override Colour", subtype="COLOR", default=(1, 0, 0, 1), min=0.0, max=1.0, size=4
    )
-    quick_favorites: CollectionProperty(type=QuickFavoritesItem)
+    quick_favorites: CollectionProperty(type=QuickFavoritesItem)  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        total_storeys: int
@@ -15,15 +15,11 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 from typing import NamedTuple

 import bpy

-import bonsai.tool as tool
-
 from . import (
    array,
    covering,
@@ -61,8 +57,6 @@ classes = (
    array.Input3DCursorXArray,
    array.Input3DCursorYArray,
    array.Input3DCursorZArray,
-    array.EnableEditingParametric,
-    array.AddArrayFromFeatureEdit,
    product.AddDefaultType,
    product.AddEmptyType,
    product.AddOccurrence,
@@ -76,43 +70,19 @@ classes = (
    workspace.BIM_MT_add_representation_item,
    wall.AddWallsFromSlab,
    wall.AlignWall,
-    wall.CancelEditingWall,
    wall.ChangeExtrusionDepth,
    wall.ChangeExtrusionXAngle,
    wall.ChangeLayerLength,
-    wall.CycleWallOffset,
    wall.DrawPolylineWall,
-    wall.EnableEditingWall,
-    wall.ExtendWallHeightToCursor,
    wall.ExtendWallsToUnderside,
-    wall.RegenerateWallToUnderside,
    wall.ExtendWallsToWall,
    wall.ExtendWallsToPolylinePoint,
-    wall.ExtendWallToCursor,
-    wall.FinishEditingWall,
    wall.FlipWall,
-    wall.GizmoWallAddOpening,
-    wall.GizmoWallEdition,
-    wall.GizmoWallExtendVertically,
-    wall.GizmoWallFilletPreview,
-    wall.GizmoWallFilletReedit,
-    wall.GizmoWallJoinIntersection,
-    wall.GizmoWallUnjoinSingle,
-    wall.JoinWallsIntersection,
    wall.MergeWall,
    wall.OffsetWalls,
    wall.RecalculateWall,
-    wall.RotateWall90,
    wall.SplitWall,
-    wall.SplitWallAtCursor,
-    wall.ToggleWallOpenings,
-    wall.UnjoinWallPathConnection,
    wall.UnjoinWalls,
-    wall.EnableWallFilletPreview,
-    wall.FinishWallFilletPreview,
-    wall.CancelWallFilletPreview,
-    wall.EnableWallFilletPreviewFromCorner,
-    wall.CreateWallFillet,
    opening.AddBoolean,
    opening.CloneOpening,
    opening.EditOpenings,
@@ -170,14 +140,10 @@ classes = (
    prop.BIMDoorProperties,
    prop.BIMRailingProperties,
    prop.BIMRoofProperties,
-    prop.BIMWallProperties,
    prop.BIMPolylineProperties,
    prop.BIMExternalParametricGeometryProperties,
-    prop.BIMWallFilletPreviewProperties,
-    prop.BIMPreviewProperties,
    ui.BIM_PT_array,
    ui.BIM_PT_stair,
-    ui.BIM_PT_wall,
    ui.BIM_PT_sverchok,
    ui.BIM_PT_window,
    ui.BIM_PT_door,
@@ -298,14 +264,15 @@ def register():
    bpy.types.Scene.BIMModelProperties = bpy.props.PointerProperty(type=prop.BIMModelProperties)
    bpy.types.Scene.BIMPolylineProperties = bpy.props.PointerProperty(type=prop.BIMPolylineProperties)
    bpy.types.Object.BIMArrayProperties = bpy.props.PointerProperty(type=prop.BIMArrayProperties)
+    bpy.types.Object.BIMStairProperties = bpy.props.PointerProperty(type=prop.BIMStairProperties)
    bpy.types.Object.BIMSverchokProperties = bpy.props.PointerProperty(type=prop.BIMSverchokProperties)
-    # Per-parametric-type ``BIM<Name>Properties`` PointerProperties — driven by
-    # ``tool.Parametric.EDIT_TYPES``; adding a registry entry is the single touchpoint.
-    tool.Parametric.register_object_properties(prop)
+    bpy.types.Object.BIMWindowProperties = bpy.props.PointerProperty(type=prop.BIMWindowProperties)
+    bpy.types.Object.BIMDoorProperties = bpy.props.PointerProperty(type=prop.BIMDoorProperties)
+    bpy.types.Object.BIMRailingProperties = bpy.props.PointerProperty(type=prop.BIMRailingProperties)
+    bpy.types.Object.BIMRoofProperties = bpy.props.PointerProperty(type=prop.BIMRoofProperties)
    bpy.types.Object.BIMExternalParametricGeometryProperties = bpy.props.PointerProperty(
        type=prop.BIMExternalParametricGeometryProperties
    )
-    bpy.types.Scene.BIMPreviewProperties = bpy.props.PointerProperty(type=prop.BIMPreviewProperties)

    bpy.types.VIEW3D_MT_add.prepend(ui.add_menu)
    bpy.app.handlers.load_post.append(handler.load_post)
@@ -314,12 +281,6 @@ def register():


 def unregister():
-    # DecorationsHandler is installed lazily by bim.show_openings; tear it down
-    # (along with its persistent depsgraph / undo / redo / load cache handlers)
-    # before the rest of unregister so those handlers can't fire against
-    # half-unloaded module state.
-    opening.DecorationsHandler.uninstall()
-
    if not bpy.app.background:
        for tool_data in reversed(tools):
            bpy.utils.unregister_tool(tool_data.tool)
@@ -327,10 +288,13 @@ def unregister():
    del bpy.types.Scene.BIMModelProperties
    del bpy.types.Scene.BIMPolylineProperties
    del bpy.types.Object.BIMArrayProperties
+    del bpy.types.Object.BIMStairProperties
    del bpy.types.Object.BIMSverchokProperties
-    tool.Parametric.unregister_object_properties()
+    del bpy.types.Object.BIMWindowProperties
+    del bpy.types.Object.BIMDoorProperties
+    del bpy.types.Object.BIMRailingProperties
+    del bpy.types.Object.BIMRoofProperties
    del bpy.types.Object.BIMExternalParametricGeometryProperties
-    del bpy.types.Scene.BIMPreviewProperties

    bpy.app.handlers.load_post.remove(handler.load_post)
    bpy.types.VIEW3D_MT_add.remove(ui.add_menu)
@@ -379,129 +379,3 @@ class Input3DCursorZArray(bpy.types.Operator):
        else:
            props.z = cursor.location.z - obj.location.z
        return {"FINISHED"}
-
-
-class EnableEditingParametric(bpy.types.Operator):
-    """Pen-icon dispatcher: fires the gizmo group's per-feature edit operator.
-
-    Bound to every parametric gizmo group's pen icon. The gizmo group's own
-    ``enable_editing_operator`` (``bim.enable_editing_door``, ``…_wall``, …)
-    is passed as ``feature_enable_op`` at setup time and invoked here. The
-    indirection lets one gizmo class serve all features without per-feature
-    subclasses."""
-
-    bl_idname = "bim.enable_editing_parametric"
-    bl_label = "Enable Editing"
-    bl_description = "Edit this object's parameters"
-    bl_options = {"REGISTER", "UNDO"}
-
-    feature_enable_op: bpy.props.StringProperty(
-        default="",
-        description="Operator bl_idname to invoke (e.g., 'bim.enable_editing_door').",
-    )
-
-    def execute(self, context):
-        # Malformed ``feature_enable_op`` (missing dot) would otherwise crash
-        # the unpack with ValueError; treat the same as the empty-string case.
-        parts = self.feature_enable_op.split(".", 1)
-        if len(parts) != 2:
-            return {"CANCELLED"}
-        domain, opname = parts
-        return getattr(getattr(bpy.ops, domain), opname)("INVOKE_DEFAULT")
-
-
-class AddArrayFromFeatureEdit(bpy.types.Operator, tool.Ifc.Operator):
-    """Commit any in-progress feature edit and add an array with
-    gizmo-friendly defaults (count=2, offset = bbox extent along the axis).
-
-    Modifier-aware: plain click → X, Shift → Y, Ctrl → Z. Callers can pass
-    ``axis="X"`` via EXEC_DEFAULT to bypass the modifier read.
-
-    All three chained operators (feature finish + add_array + enable_editing)
-    run inside one transaction for a single undo step."""
-
-    bl_idname = "bim.add_array_from_feature_edit"
-    bl_label = "Add Array"
-    bl_description = (
-        "Click: add an array along X.\n" "Shift+Click: add an array along Y.\n" "Ctrl+Click: add an array along Z"
-    )
-    bl_options = {"REGISTER", "UNDO"}
-
-    axis: bpy.props.EnumProperty(
-        name="Offset Axis",
-        items=[
-            ("X", "X", "Offset along the object's X axis (bbox X extent)"),
-            ("Y", "Y", "Offset along the object's Y axis (bbox Y extent)"),
-            ("Z", "Z", "Offset along the object's Z axis (bbox Z extent)"),
-        ],
-        default="X",
-    )
-
-    # Minimum offset to use when the object's bbox extent is tiny — prevents
-    # the second instance from visually overlapping the parent on small
-    # annotations / openings (0.3m ≈ a clearly-separated next-instance distance).
-    MIN_DEFAULT_OFFSET = 0.3
-
-    def invoke(self, context, event):
-        # Modifier-aware axis pick: X by default, Shift → Y, Ctrl → Z.
-        if event.shift:
-            self.axis = "Y"
-        elif event.ctrl:
-            self.axis = "Z"
-        else:
-            self.axis = "X"
-        return self.execute(context)
-
-    def _execute(self, context):
-        obj = context.active_object
-        if obj is None:
-            return {"CANCELLED"}
-        # Commit any in-progress parametric edit lifecycle on this object first — the
-        # user expects "Add Array" to also finalise whatever they were editing
-        # so they don't lose their draft changes.
-        editing = tool.Parametric.is_object_editing(obj, skip_name="array")
-        if editing is not None:
-            finish_op_name = editing.finish_op.removeprefix("bim.")
-            getattr(bpy.ops.bim, finish_op_name)("INVOKE_DEFAULT")
-        # Bounding-box derived offset along the chosen axis, converted from
-        # Blender SI (meters) to IFC project units (which is what
-        # ``BBIM_Array.Data`` stores; the regenerator multiplies by
-        # unit_scale on the way out).
-        axis_idx = "XYZ".index(self.axis)
-        if obj.bound_box:
-            bbox_extent_si = max(c[axis_idx] for c in obj.bound_box) - min(c[axis_idx] for c in obj.bound_box)
-        else:
-            bbox_extent_si = 1.0
-        bbox_extent_si = max(bbox_extent_si, self.MIN_DEFAULT_OFFSET)
-        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
-        offset_project = bbox_extent_si / si_conversion if si_conversion else bbox_extent_si
-        add_kwargs = {"count": 2, "x": 0.0, "y": 0.0, "z": 0.0}
-        add_kwargs[self.axis.lower()] = offset_project
-        result = bpy.ops.bim.add_array(**add_kwargs)
-        if result != {"FINISHED"}:
-            return result
-        # Restore selection to just the parent. ``regenerate_array`` calls
-        # ``tool.Geometry.duplicate_ifc_objects`` which leaves the newly-created
-        # child selected alongside the parent. The edit-lifecycle gizmos poll on a
-        # single-selected parent, so with both selected the gizmos wouldn't
-        # surface and "ARRAY → enter edit" would feel broken.
-        tool.Blender.select_and_activate_single_object(context, active_object=obj)
-        # Chain straight into array edit for the newly-added layer (always the
-        # last entry in the pset's Data list, by AddArray's append semantics).
-        # The user's expectation after clicking ARRAY is "I want to tweak this
-        # array now" — entering edit mode immediately collapses the 2-click
-        # discover-then-edit flow into one.
-        element = tool.Ifc.get_entity(obj)
-        if element is None:
-            return {"FINISHED"}
-        data_text = ifcopenshell.util.element.get_pset(element, "BBIM_Array", "Data")
-        if not data_text:
-            return {"FINISHED"}
-        try:
-            layers = json.loads(data_text)
-        except (ValueError, TypeError):
-            return {"FINISHED"}
-        if not layers:
-            return {"FINISHED"}
-        bpy.ops.bim.enable_editing_array("INVOKE_DEFAULT", item=len(layers) - 1)
-        return {"FINISHED"}
@@ -108,7 +108,7 @@ class ProfileDecorator:

        obj = context.active_object

-        if obj is None or obj.mode != "EDIT":
+        if obj.mode != "EDIT":
            if exit_edit_mode_callback:
                ProfileDecorator.uninstall()
                exit_edit_mode_callback()
@@ -2029,151 +2029,3 @@ class BoundingBoxDecorator:
                        else:
                            co1.y += y_overlap / 2 + min_spacing
                            co2.y -= y_overlap / 2 + min_spacing
-
-
-def _stroke_lines_alpha(
-    context: bpy.types.Context,
-    segments: list[tuple[tuple[float, float, float], tuple[float, float, float]]],
-    color_rgb: tuple[float, float, float],
-    line_width: float,
-    line_alpha: float,
-) -> None:
-    """Render ``segments`` (a list of ``(start, end)`` tuples) as one
-    anti-aliased LINES batch in world space. Early-returns when
-    ``context.region`` is unavailable (e.g. when called from a
-    ``_RestrictContext``)."""
-    if not segments:
-        return
-    verts: list[tuple[float, float, float]] = []
-    indices: list[tuple[int, int]] = []
-    for start, end in segments:
-        base = len(verts)
-        verts.append(tuple(start))
-        verts.append(tuple(end))
-        indices.append((base, base + 1))
-    if not tool.Blender.validate_shader_batch_data(verts, indices):
-        return
-    region = getattr(context, "region", None)
-    if region is None:
-        return
-    shader = gpu.shader.from_builtin("POLYLINE_UNIFORM_COLOR")
-    shader.bind()
-    shader.uniform_float("viewportSize", (region.width, region.height))
-    shader.uniform_float("lineWidth", line_width)
-    shader.uniform_float("color", (*color_rgb, line_alpha))
-    batch = batch_for_shader(shader, "LINES", {"pos": verts}, indices=indices)
-    gpu.state.blend_set("ALPHA")
-    batch.draw(shader)
-    gpu.state.blend_set("NONE")
-
-
-class WallFilletPreviewDecorator(tool.Blender.ViewportDecorator):
-    """GPU preview lines for the wall-fillet flow.
-
-    Polls on ``scene.BIMPreviewProperties.wall_fillet.is_active`` and renders
-    the leg projections + arc + radial construction lines returned by
-    ``tool.Wall.compute_wall_fillet_geometry``. The two leg lines show how
-    each wall will be shortened to its tangent point; the arc approximates
-    the rounded corner; the two construction lines (arc center to each
-    tangent point) visually pin the radius.
-
-    Installed once per Blender session from ``bim/handler.py:load_post``
-    and uninstalled in ``bim/module/model/__init__.py:unregister``."""
-
-    LINE_WIDTH_LEG = 1.5
-    LINE_WIDTH_ARC = 2.5
-    LINE_WIDTH_CONSTRUCTION = 1.0
-    LINE_ALPHA = 0.7
-    CONSTRUCTION_ALPHA = 0.4
-
-    def draw(self, context: bpy.types.Context) -> None:
-        scene = context.scene
-        preview_props = getattr(scene, "BIMPreviewProperties", None)
-        props = preview_props.wall_fillet if preview_props is not None else None
-        if props is None or not props.is_active:
-            return
-        ifc_file = tool.Ifc.get()
-        if ifc_file is None:
-            return
-        try:
-            wall_a = ifc_file.by_id(props.wall_a_id)
-            wall_b = ifc_file.by_id(props.wall_b_id)
-        except Exception:
-            return
-        wall_a_obj = tool.Ifc.get_object(wall_a) if wall_a else None
-        wall_b_obj = tool.Ifc.get_object(wall_b) if wall_b else None
-        if wall_a_obj is None or wall_b_obj is None:
-            return
-
-        geom = tool.Wall.compute_wall_fillet_geometry(wall_a_obj, wall_b_obj, props.radius)
-        if geom is None:
-            return
-
-        prefs = tool.Blender.get_addon_preferences()
-        warning_color = tuple(prefs.decorator_color_error[:3])
-
-        if not geom["valid"]:
-            # Degenerate geometry paints red: invalid_radius shows legs+arc
-            # past the wall ends; invalid_axes shows the parallel/collinear
-            # axes.
-            if geom.get("invalid_radius"):
-                tangent_a = geom.get("tangent_a")
-                tangent_b = geom.get("tangent_b")
-                ref_a = tool.Wall.get_world_reference_line(wall_a_obj)
-                ref_b = tool.Wall.get_world_reference_line(wall_b_obj)
-                if tangent_a is not None and tangent_b is not None and ref_a is not None and ref_b is not None:
-                    far_a = self._far_endpoint(ref_a, geom["intersection"])
-                    far_b = self._far_endpoint(ref_b, geom["intersection"])
-                    legs = [
-                        (tuple(far_a), tuple(tangent_a)),
-                        (tuple(far_b), tuple(tangent_b)),
-                    ]
-                    _stroke_lines_alpha(context, legs, warning_color, self.LINE_WIDTH_LEG, self.LINE_ALPHA)
-                arc = geom.get("arc") or []
-                if len(arc) >= 2:
-                    arc_segments = [(tuple(arc[i]), tuple(arc[i + 1])) for i in range(len(arc) - 1)]
-                    _stroke_lines_alpha(context, arc_segments, warning_color, self.LINE_WIDTH_ARC, self.LINE_ALPHA)
-            elif geom.get("invalid_axes"):
-                axes = geom["invalid_axes"]
-                segments = [(tuple(a), tuple(b)) for a, b in axes]
-                _stroke_lines_alpha(context, segments, warning_color, self.LINE_WIDTH_ARC, self.LINE_ALPHA)
-            return
-
-        leg_color = tuple(prefs.decorations_colour[:3])
-        arc_color = tuple(prefs.decorator_color_selected[:3])
-
-        # Resolved against the IFC reference line, not mesh bounds, so trimmed
-        # walls and openings don't shift the leg endpoints.
-        ref_a = tool.Wall.get_world_reference_line(wall_a_obj)
-        ref_b = tool.Wall.get_world_reference_line(wall_b_obj)
-        if ref_a is not None and ref_b is not None and geom["intersection"] is not None:
-            far_a = self._far_endpoint(ref_a, geom["intersection"])
-            far_b = self._far_endpoint(ref_b, geom["intersection"])
-            legs = [
-                (tuple(far_a), tuple(geom["tangent_a"])),
-                (tuple(far_b), tuple(geom["tangent_b"])),
-            ]
-            _stroke_lines_alpha(context, legs, leg_color, self.LINE_WIDTH_LEG, self.LINE_ALPHA)
-
-        arc = geom["arc"]
-        if len(arc) >= 2:
-            arc_segments = [(tuple(arc[i]), tuple(arc[i + 1])) for i in range(len(arc) - 1)]
-            _stroke_lines_alpha(context, arc_segments, arc_color, self.LINE_WIDTH_ARC, self.LINE_ALPHA)
-
-        # Dim construction lines from arc_center to each tangent point so
-        # the radius reads as concrete during drag.
-        arc_center = geom.get("arc_center")
-        if arc_center is not None:
-            construction = [
-                (tuple(arc_center), tuple(geom["tangent_a"])),
-                (tuple(arc_center), tuple(geom["tangent_b"])),
-            ]
-            _stroke_lines_alpha(context, construction, arc_color, self.LINE_WIDTH_CONSTRUCTION, self.CONSTRUCTION_ALPHA)
-
-    @staticmethod
-    def _far_endpoint(reference_line, intersection):
-        """Endpoint of ``reference_line`` furthest from ``intersection``."""
-        p1, p2 = reference_line
-        d1 = (p1.x - intersection[0]) ** 2 + (p1.y - intersection[1]) ** 2 + (p1.z - intersection[2]) ** 2
-        d2 = (p2.x - intersection[0]) ** 2 + (p2.y - intersection[1]) ** 2 + (p2.z - intersection[2]) ** 2
-        return p2 if d2 >= d1 else p1
@@ -38,7 +38,6 @@ import bonsai.tool as tool
 from bonsai.bim.module.drawing import gizmos as gizmo
 from bonsai.bim.module.drawing.gizmos import DimensionGizmoConfig
 from bonsai.bim.module.model.window import create_bm_box, create_bm_window
-from bonsai.bim.parametric_lifecycle import FeatureModifierEditMixin

 if TYPE_CHECKING:
    from bonsai.bim.module.model.prop import BIMDoorProperties
@@ -567,58 +566,103 @@ class AddDoor(bpy.types.Operator, tool.Ifc.Operator):
        return {"FINISHED"}


-class _DoorEditMixin(FeatureModifierEditMixin):
-    """Type-specific hooks for door parametric-edit operators. Multi-object —
-    iterates ``tool.Blender.get_selected_objects()`` so a finish/cancel applies
-    to every selected door at once."""
-
-    pset_name = "BBIM_Door"
-
-    @classmethod
-    def _iter_targets(cls, context: bpy.types.Context) -> list[bpy.types.Object]:
-        return tool.Blender.get_selected_objects()
-
-    @classmethod
-    def _is_element_type(cls, element):
-        return tool.Blender.Modifier.is_door(element)
-
-    @classmethod
-    def _get_props(cls, obj: bpy.types.Object):
-        return tool.Model.get_door_props(obj)
-
-    @classmethod
-    def _update_modifier_representation(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        update_door_modifier_representation(obj)
-
-
-class CancelEditingDoor(_DoorEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class CancelEditingDoor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.cancel_editing_door"
    bl_label = "Cancel Editing Door on Selected Objects"
    bl_description = "Cancel editing and revert door parameters to their previous values"
    bl_options = {"REGISTER", "UNDO"}

-    def _execute(self, context: bpy.types.Context) -> set[str]:
-        return self._cancel_targets(context)
+    def cancel_editing_door_on_object(self, obj: bpy.types.Object) -> None:
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        if not tool.Blender.Modifier.is_door(element):
+            return
+        props = tool.Model.get_door_props(obj)
+        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Door", "Data"))
+        data.update(data.pop("lining_properties"))
+        data.update(data.pop("panel_properties"))
+
+        # restore previous settings since editing was canceled
+        props.set_props_kwargs_from_ifc_data(data)
+
+        body = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
+        core.switch_representation(
+            tool.Ifc,
+            tool.Geometry,
+            obj=obj,
+            representation=body,
+        )
+
+        props.is_editing = False
+
+    def _execute(self, context: bpy.types.Context) -> set[str]:  # noqa: ARG002
+        for obj in tool.Blender.get_selected_objects():
+            self.cancel_editing_door_on_object(obj)
+        return {"FINISHED"}


-class FinishEditingDoor(_DoorEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class FinishEditingDoor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.finish_editing_door"
    bl_label = "Finish Editing Door on Selected Objects"
    bl_description = "Apply changes and finish editing door parameters"
    bl_options = {"REGISTER", "UNDO"}

-    def _execute(self, context: bpy.types.Context) -> set[str]:
-        return self._finish_targets(context)
+    def finish_editing_door_on_object(self, obj: bpy.types.Object) -> None:
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        if not tool.Blender.Modifier.is_door(element):
+            return
+        props = tool.Model.get_door_props(obj)
+
+        door_data = props.get_general_kwargs(convert_to_project_units=True)
+        lining_props = props.get_lining_kwargs(convert_to_project_units=True)
+        panel_props = props.get_panel_kwargs(convert_to_project_units=True)
+
+        door_data["lining_properties"] = lining_props
+        door_data["panel_properties"] = panel_props
+
+        props.is_editing = False
+
+        update_door_modifier_representation(obj)
+        element_type = ifcopenshell.util.element.get_type(element)
+        if element_type:
+            tool.Model.mark_thumbnail_for_update(element_type)
+
+        pset = tool.Pset.get_element_pset(element, "BBIM_Door")
+        door_data = tool.Ifc.get().createIfcText(json.dumps(door_data, default=list))
+        ifcopenshell.api.pset.edit_pset(tool.Ifc.get(), pset=pset, properties={"Data": door_data})
+
+    def _execute(self, context: bpy.types.Context) -> set[str]:  # noqa: ARG002
+        for obj in tool.Blender.get_selected_objects():
+            self.finish_editing_door_on_object(obj)
+        return {"FINISHED"}


-class EnableEditingDoor(_DoorEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class EnableEditingDoor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.enable_editing_door"
    bl_label = "Enable Editing Door on Selected Objects"
    bl_description = "Enter edit mode to modify door parameters interactively"
    bl_options = {"REGISTER", "UNDO"}

-    def _execute(self, context: bpy.types.Context) -> set[str]:
-        return self._enable_targets(context)
+    def edit_door_on_obj(self, obj: bpy.types.Object) -> None:
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        if not tool.Blender.Modifier.is_door(element):
+            return
+        props = tool.Model.get_door_props(obj)
+        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Door", "Data"))
+        data.update(data.pop("lining_properties"))
+        data.update(data.pop("panel_properties"))
+        data.update(tool.Model.get_constituents_props_data(element))
+
+        # required since we could load pset from .ifc and BIMDoorProperties won't be set
+        props.set_props_kwargs_from_ifc_data(data)
+        props.is_editing = True
+
+    def _execute(self, context: bpy.types.Context) -> set[str]:  # noqa: ARG002
+        for obj in tool.Blender.get_selected_objects():
+            self.edit_door_on_obj(obj)
+        return {"FINISHED"}


 class RemoveDoor(bpy.types.Operator, tool.Ifc.Operator):
@@ -707,8 +751,8 @@ class CycleDoorType(bpy.types.Operator, tool.Ifc.Operator, gizmo.CycleTypeMixin)
    bl_label = "Cycle Door Type"
    bl_options = {"REGISTER", "UNDO"}

-    element_checker = tool.Parametric.is_door
-    props_getter = tool.Model.get_door_props
+    element_checker = "is_door"
+    props_getter = "get_door_props"
    type_literal = tool.Model.DoorType
    type_attr = "door_type"

@@ -835,7 +879,7 @@ class GizmoDoorEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
        ),
    ]

-    props_getter = tool.Model.get_door_props
+    props_getter = "get_door_props"
    gizmo_pref_name = "door"

    @classmethod
@@ -866,11 +910,13 @@ class GizmoDoorEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
        self.gizmo_door_type = self.create_arc_gizmo(
            special_color,
            "bim.toggle_door_swing",
+            prop_path="BIMDoorProperties.door_type",
            flip_geometry=False,
        )
        self.gizmo_flip_arc = self.create_arc_gizmo(
            inactive_color,
            "bim.toggle_door_swing",
+            prop_path="BIMDoorProperties.door_type",
            flip_geometry=True,
            flip_local_axes="XY",
        )
@@ -893,7 +939,7 @@ class GizmoDoorEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):

    def update_swing_gizmos(self, mw: Matrix, props: "BIMDoorProperties") -> None:
        """Update swing gizmo position and color based on editing state."""
-        prefs = self.get_addon_prefs()
+        prefs = tool.Blender.get_addon_preferences()
        door_gizmo_prefs = prefs.gizmos.door

        door_type_visible = self.update_gizmo_visibility(
@@ -41,187 +41,8 @@ from mathutils import Matrix, Vector

 import bonsai.core.geometry
 import bonsai.tool as tool
-from bonsai.bim import decorator_cache
 from bonsai.bim.module.drawing.decoration import DecoratorData

-# Multi-entry cache for the opening preview's dissolved-edges fallback.
-# Single-entry wouldn't fit: the draw handler iterates every active opening
-# per frame, each with its own mesh. Bumped wholesale on the shared
-# decorator-cache token (depsgraph / undo / redo / load), one slot per
-# (mesh.session_uid, angle_limit). Outlier vs. the per-object caches below —
-# consulted only on world-draw-data miss, so the global wipe rarely fires in
-# steady state and the simpler invalidation is enough.
-_dissolved_edges_cache: dict[
-    tuple[int, float],
-    tuple[list[Vector], list[tuple[int, int]]],
-] = {}
-_dissolved_edges_cache_token: int = -1
-
-
-def _get_cached_dissolved_edges(
-    mesh: bpy.types.Mesh,
-    angle_limit: float = radians(1.0),
-) -> tuple[list[Vector], list[tuple[int, int]]]:
-    global _dissolved_edges_cache_token
-    token = decorator_cache.get_decorator_cache_token()
-    if token != _dissolved_edges_cache_token:
-        _dissolved_edges_cache.clear()
-        _dissolved_edges_cache_token = token
-    key = (mesh.session_uid, angle_limit)
-    cached = _dissolved_edges_cache.get(key)
-    if cached is not None:
-        return cached
-    result = tool.Geometry.get_dissolved_edges(mesh, angle_limit=angle_limit)
-    _dissolved_edges_cache[key] = result
-    return result
-
-
-# Per-object epoch: bumped only when this specific object's transform or geometry
-# updates land in the depsgraph delta. Invalidation work scales with the number
-# of changed objects, not total scene size — moving one object leaves every
-# other entry valid. Bumped by the depsgraph handler below; cleared on
-# undo/redo/load alongside the cache dicts.
-_object_epochs: dict[int, int] = {}
-
-
-@bpy.app.handlers.persistent
-def _bump_object_epochs_for_decoration(*args) -> None:
-    # depsgraph_update_post is called as (scene, depsgraph) in 4.x but the
-    # *args signature follows decorator_cache's defensive idiom.
-    depsgraph = args[1] if len(args) >= 2 else None
-    if depsgraph is None or not hasattr(depsgraph, "updates"):
-        return
-    for u in depsgraph.updates:
-        if not isinstance(u.id, bpy.types.Object):
-            continue
-        if not (u.is_updated_geometry or u.is_updated_transform):
-            continue
-        # u.id is the evaluated COW copy; the cache keys are written from the
-        # original Object (read by the draw handler), and session_uid can
-        # differ across the COW boundary. Resolve to the original before keying.
-        original = getattr(u.id, "original", u.id)
-        if original is None:
-            continue
-        uid = original.session_uid
-        _object_epochs[uid] = _object_epochs.get(uid, 0) + 1
-
-
-@bpy.app.handlers.persistent
-def _clear_decoration_caches_globally(*args) -> None:
-    # Undo/redo/load: depsgraph deltas can't be trusted to describe the
-    # transition, so wipe every per-object cache state.
-    _object_epochs.clear()
-    _world_draw_data_cache.clear()
-    _batch_cache.clear()
-
-
-def _decoration_invalidation_hooks() -> tuple:
-    return (
-        bpy.app.handlers.undo_post,
-        bpy.app.handlers.redo_post,
-        bpy.app.handlers.load_post,
-    )
-
-
-def install_decoration_cache_handlers() -> None:
-    if _bump_object_epochs_for_decoration not in bpy.app.handlers.depsgraph_update_post:
-        bpy.app.handlers.depsgraph_update_post.append(_bump_object_epochs_for_decoration)
-    for hook in _decoration_invalidation_hooks():
-        if _clear_decoration_caches_globally not in hook:
-            hook.append(_clear_decoration_caches_globally)
-
-
-def uninstall_decoration_cache_handlers() -> None:
-    try:
-        bpy.app.handlers.depsgraph_update_post.remove(_bump_object_epochs_for_decoration)
-    except ValueError:
-        pass
-    for hook in _decoration_invalidation_hooks():
-        try:
-            hook.remove(_clear_decoration_caches_globally)
-        except ValueError:
-            pass
-
-
-# Per-object world-space draw payload: line_verts (dissolved or ios_edges-filtered),
-# verts (full mesh, indexed by loop_triangles), edges_indices, tris. Entries are
-# (epoch, payload) tuples; lookup compares epoch to _object_epochs[uid], so a
-# stale entry for an object that didn't change since the last build still hits.
-_world_draw_data_cache: dict[
-    int,
-    tuple[
-        int,
-        tuple[
-            list[tuple[float, float, float]],
-            list[tuple[float, float, float]],
-            list[tuple[int, int]],
-            list[tuple[int, ...]],
-        ],
-    ],
-] = {}
-
-
-def _get_cached_world_draw_data(
-    obj: bpy.types.Object,
-) -> tuple[
-    list[tuple[float, float, float]],
-    list[tuple[float, float, float]],
-    list[tuple[int, int]],
-    list[tuple[int, ...]],
-]:
-    uid = obj.session_uid
-    epoch = _object_epochs.get(uid, 0)
-    entry = _world_draw_data_cache.get(uid)
-    if entry is not None and entry[0] == epoch:
-        return entry[1]
-
-    mw = obj.matrix_world
-    verts = [tuple(mw @ v.co) for v in obj.data.vertices]
-    obj.data.calc_loop_triangles()
-    tris = [tuple(t.vertices) for t in obj.data.loop_triangles]
-
-    ios_edges_attribute = obj.data.attributes.get("ios_edges")
-    if ios_edges_attribute:
-        # Loader-curated edges: read the attribute aligned with bm.edges order.
-        bm = bmesh.new()
-        bm.from_mesh(obj.data)
-        edges_indices = [
-            tuple(v.index for v in e.verts) for i, e in enumerate(bm.edges) if ios_edges_attribute.data[i].value
-        ]
-        bm.free()
-        line_verts = verts
-    else:
-        dissolved, edges_indices = _get_cached_dissolved_edges(obj.data)
-        line_verts = [tuple(mw @ v) for v in dissolved]
-
-    result = (line_verts, verts, edges_indices, tris)
-    _world_draw_data_cache[uid] = (epoch, result)
-    return result
-
-
-# GPUBatch cache: skip per-frame batch_for_shader. Entries are (epoch, batch);
-# lookup compares epoch to _object_epochs[uid] so other objects' batches stay
-# alive when one object's depsgraph delta bumps only its own epoch. The cached
-# batches reference GPU-side buffers tied to Blender's built-in shaders, which
-# are themselves cached by name (gpu.shader.from_builtin returns the same
-# handle each call), so they stay drawable across frames.
-_batch_cache: dict[tuple[int, str], tuple[int, "gpu.types.GPUBatch"]] = {}
-
-
-def _get_cached_batch_or_none(cache_key: tuple[int, str]) -> "gpu.types.GPUBatch | None":
-    uid = cache_key[0]
-    epoch = _object_epochs.get(uid, 0)
-    entry = _batch_cache.get(cache_key)
-    if entry is not None and entry[0] == epoch:
-        return entry[1]
-    return None
-
-
-def _store_batch_in_cache(cache_key: tuple[int, str], batch: "gpu.types.GPUBatch") -> None:
-    uid = cache_key[0]
-    epoch = _object_epochs.get(uid, 0)
-    _batch_cache[cache_key] = (epoch, batch)
-

 class FilledOpeningGenerator:
    def generate(
@@ -1120,6 +941,7 @@ class SelectBoolean(Operator):
        return {"FINISHED"}


+# TODO: merge with ProfileDecorator?
 class DecorationsHandler:
    installed = None

@@ -1129,7 +951,6 @@ class DecorationsHandler:
            cls.uninstall()
        handler = cls()
        cls.installed = SpaceView3D.draw_handler_add(handler, (context,), "WINDOW", "POST_VIEW")
-        install_decoration_cache_handlers()

    @classmethod
    def uninstall(cls):
@@ -1138,46 +959,15 @@ class DecorationsHandler:
        except ValueError:
            pass
        cls.installed = None
-        uninstall_decoration_cache_handlers()

-    def _get_or_build_batch(self, shader, shader_type, content_pos, indices=None, cache_key=None):
-        if cache_key is not None:
-            cached = _get_cached_batch_or_none(cache_key)
-            if cached is not None:
-                return cached
+    def draw_batch(self, shader_type, content_pos, color, indices=None):
        if not tool.Blender.validate_shader_batch_data(content_pos, indices):
-            return None
-        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
-        if cache_key is not None:
-            _store_batch_in_cache(cache_key, batch)
-        return batch
-
-    def draw_batch(self, shader_type, content_pos, color, indices=None, cache_key=None):
-        shader = self.line_shader if shader_type == "LINES" else self.shader
-        batch = self._get_or_build_batch(shader, shader_type, content_pos, indices, cache_key=cache_key)
-        if batch is None:
            return
+        shader = self.line_shader if shader_type == "LINES" else self.shader
+        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
        shader.uniform_float("color", color)
        batch.draw(shader)

-    def _draw_lines_with_occlusion(self, verts, color, edges_indices, occluded_alpha: float = 0.25, cache_key=None):
-        # One batch, two draws: front pass at full color, occluded pass at
-        # `occluded_alpha`. Save/restore depth_test matches the pattern in
-        # bim/module/structural/decorator.py so callers' state survives.
-        batch = self._get_or_build_batch(self.line_shader, "LINES", verts, edges_indices, cache_key=cache_key)
-        if batch is None:
-            return
-        original_depth_test = gpu.state.depth_test_get()
-        gpu.state.depth_test_set("LESS_EQUAL")
-        self.line_shader.uniform_float("color", color)
-        batch.draw(self.line_shader)
-        gpu.state.depth_test_set("GREATER")
-        dimmed = list(color)
-        dimmed[3] = occluded_alpha
-        self.line_shader.uniform_float("color", dimmed)
-        batch.draw(self.line_shader)
-        gpu.state.depth_test_set(original_depth_test)
-
    def __call__(self, context):
        props = tool.Model.get_model_props()
        if not props.openings:
@@ -1249,20 +1039,23 @@ class DecorationsHandler:
                self.draw_batch("LINES", verts, selected_elements_color, selected_edges)
                self.draw_batch("POINTS", unselected_vertices, unselected_elements_color)
                self.draw_batch("POINTS", selected_vertices, selected_elements_color)
-                obj.data.calc_loop_triangles()
-                tris = [tuple(t.vertices) for t in obj.data.loop_triangles]
-                self.draw_batch("TRIS", verts, transparent_color(special_elements_color), tris)
            else:
-                line_verts, verts, edges_indices, tris = _get_cached_world_draw_data(obj)
+                bm = bmesh.new()
+                bm.from_mesh(obj.data)
+
+                verts = [tuple(obj.matrix_world @ v.co) for v in bm.verts]
+                if ios_edges_attribute := obj.data.attributes.get("ios_edges"):
+                    edges = [e for i, e in enumerate(bm.edges) if ios_edges_attribute.data[i].value]
+                else:
+                    edges = bm.edges
+                edges_indices = [tuple([v.index for v in e.verts]) for e in edges]
+
                color = selected_elements_color if obj in context.selected_objects else special_elements_color
-                self._draw_lines_with_occlusion(line_verts, color, edges_indices, cache_key=(obj.session_uid, "lines"))
-                self.draw_batch(
-                    "TRIS",
-                    verts,
-                    transparent_color(special_elements_color),
-                    tris,
-                    cache_key=(obj.session_uid, "tris"),
-                )
+                self.draw_batch("LINES", verts, color, edges_indices)
+
+            obj.data.calc_loop_triangles()
+            tris = [tuple(t.vertices) for t in obj.data.loop_triangles]
+            self.draw_batch("TRIS", verts, transparent_color(special_elements_color), tris)

            if "HalfSpaceSolid" in obj.name:
                # Arrow shape
@@ -1276,4 +1069,7 @@ class DecorationsHandler:
                ]
                edges = [(0, 1), (1, 2), (1, 3), (1, 4), (1, 5)]
                color = selected_elements_color if obj in context.selected_objects else special_elements_color
-                self._draw_lines_with_occlusion(verts, color, edges, cache_key=(obj.session_uid, "arrow"))
+                self.draw_batch("LINES", verts, color, edges)
+
+            if obj.mode != "EDIT":
+                bm.free()
@@ -75,7 +75,6 @@ class PolylineOperator:
        self.is_typing = False
        self.snap_angle = None
        self.snapping_points = []
-        self.unit_scale = 1.0
        self.instructions = {
            "Cycle Input": {"icons": True, "keys": ["EVENT_TAB"]},
            "Distance Input": {"icons": True, "keys": ["EVENT_D"]},
@@ -1,221 +0,0 @@
-# Bonsai - OpenBIM Blender Add-on
-# Copyright (C) 2026
-#
-# This file is part of Bonsai.
-#
-# Bonsai is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Bonsai is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was generated with the assistance of an AI coding tool.
-
-"""Shared helpers for Bonsai's parametric preview flows.
-
-Multiple Bonsai features follow the same Scene-level preview pattern:
-
-    Enable<X>Preview   — validates a selection, populates draft state on
-                         ``Scene.BIMPreviewProperties.<x>``, flips ``is_active``.
-    Gizmo<X>Preview    — polls on ``is_active``, surfaces tunable widgets +
-                         validate/cancel icons.
-    <X>PreviewDecorator — GPU lines drawn while ``is_active`` is True.
-    Finish<X>Preview   — direct ``bpy.ops.bim.<verb>(...)`` call with kwargs
-                         read off the draft state, then clears it.
-    Cancel<X>Preview   — pure state reset.
-
-The MEP bend and wall fillet flows are the two current callers. They write
-their Finish / Cancel operators directly, matching the convention used
-throughout the rest of ``bim/module/model/`` for operator-to-operator
-dispatch (explicit ``bpy.ops.bim.X(kwarg=value)`` at the call site, no
-string indirection). This module hosts the cross-cutting accessors only;
-no base class layer.
-
-The GPU draw-handler lifecycle for ``<X>PreviewDecorator`` lives on the
-feature-neutral ``tool.Blender.ViewportDecorator`` base, which every
-viewport decorator (preview or otherwise) inherits from."""
-
-from __future__ import annotations
-
-from collections.abc import Callable
-from typing import Any
-
-import bpy
-
-import bonsai.tool as tool
-
-# --- Props accessors ---------------------------------------------------------
-
-
-def get_preview_props(context: bpy.types.Context, attr: str):
-    """Resolve a child preview PropertyGroup under ``Scene.BIMPreviewProperties``.
-
-    Returns ``None`` if the umbrella isn't attached yet — true briefly
-    during addon register and during plug-out, so polls / draw callbacks
-    must defend against ``None`` rather than assuming the prop is always
-    available. Also tolerates contexts without a ``scene`` attribute
-    (test mocks built from ``SimpleNamespace``)."""
-    scene = getattr(context, "scene", None)
-    if scene is None:
-        return None
-    preview = getattr(scene, "BIMPreviewProperties", None)
-    return getattr(preview, attr, None) if preview is not None else None
-
-
-def is_preview_active(context: bpy.types.Context, attr: str) -> bool:
-    """``True`` while a specific preview is open. Used by sibling gizmo
-    polls to hide themselves so the preview is the only interactive
-    surface in the viewport (the bend / fillet preview groups take over
-    the same selection's icon stack)."""
-    props = get_preview_props(context, attr)
-    return bool(props is not None and props.is_active)
-
-
-def any_preview_active(context: bpy.types.Context) -> bool:
-    """``True`` if any registered preview is currently open. Sister gizmo
-    polls call this to hide themselves uniformly during ANY preview, so a
-    new preview registered in ``PREVIEW_CANCEL_OPS`` automatically gates
-    every parametric gizmo without each one growing a specific check."""
-    for attr, _op_name in PREVIEW_CANCEL_OPS:
-        if is_preview_active(context, attr):
-            return True
-    return False
-
-
-# --- Lazy closure factories --------------------------------------------------
-#
-# Used by preview gizmo groups when wiring ``BIM_GT_gizmo_dimension``'s
-# ``move_get_cb`` / ``move_set_cb`` callbacks. The closures re-resolve
-# ``bpy.context.scene`` per CALL rather than capturing it at setup() time
-# — the captured Scene's RNA struct can be freed on file open / undo, and
-# referencing a freed struct crashes Blender. Lazy lookup survives the
-# whole undo / reload lifecycle.
-
-
-def make_props_callback(attr: str) -> Callable[[], Any]:
-    """Return a zero-arg callable that lazily fetches the preview props.
-
-    Equivalent to ``getattr(bpy.context.scene.BIMPreviewProperties, attr)``
-    with full defensiveness against missing scene / missing umbrella."""
-
-    def _props():
-        scene = bpy.context.scene
-        preview = getattr(scene, "BIMPreviewProperties", None) if scene else None
-        return getattr(preview, attr, None) if preview is not None else None
-
-    return _props
-
-
-def make_dim_getter(props_callback: Callable[[], Any], field: str) -> Callable[[], float]:
-    """Factory for ``BIM_GT_gizmo_dimension.move_get_cb`` reading a single
-    FloatProperty off the live preview state. Returns ``0.0`` defensively
-    when the props are temporarily unavailable so the widget doesn't crash
-    Blender during plug-out / reload."""
-
-    def _get() -> float:
-        props = props_callback()
-        return getattr(props, field) if props is not None else 0.0
-
-    return _get
-
-
-def make_dim_setter(
-    props_callback: Callable[[], Any],
-    field: str,
-    min_value: float = 0.001,
-) -> Callable[[float], None]:
-    """Factory for ``BIM_GT_gizmo_dimension.move_set_cb`` writing a single
-    FloatProperty + tagging viewport areas for redraw so the GPU preview
-    decorator tracks the value live during drag. Clamps at ``min_value``
-    to match the FloatProperty's declared lower bound."""
-
-    def _set(value: float) -> None:
-        props = props_callback()
-        if props is None:
-            return
-        setattr(props, field, max(min_value, float(value)))
-        tool.Blender.update_all_viewports()
-
-    return _set
-
-
-# --- Shared Enable lifecycle helpers -----------------------------------------
-
-
-def sync_uncommitted_moves(objects: list) -> None:
-    """Push any Blender-side translation / rotation of ``objects`` back to
-    their IFC ``ObjectPlacement`` before a preview decorator starts reading
-    ``obj.matrix_world`` per frame.
-
-    Without this sync, a user who grabbed-moved an object but didn't commit
-    the move sees the live preview at the dragged position while the final
-    commit lands at the stale IFC position — a confusing "where did my
-    preview go?" experience. Both bend and fillet enable paths call this
-    on the relevant pair just before activating the preview."""
-    for obj in objects:
-        tool.Geometry.commit_placement_if_moved(obj, apply_scale=False)
-
-
-# --- Esc dispatch ------------------------------------------------------------
-
-PREVIEW_CANCEL_OPS: tuple[tuple[str, str], ...] = (
-    ("bend", "cancel_bend_preview"),
-    ("wall_fillet", "cancel_wall_fillet_preview"),
-)
-"""Registry of ``(child PointerProperty on Scene.BIMPreviewProperties, bim
-operator name)`` consulted by the Esc handler. Adding a new preview means
-appending one tuple; the forward-compat test pins that every preview
-PropertyGroup with ``is_active`` has an entry here."""
-
-
-def try_cancel_active_preview(context: bpy.types.Context) -> bool:
-    """Cancel every registered preview that is currently active.
-
-    Returns ``True`` iff at least one preview was cancelled. Multiple
-    previews can be simultaneously active (e.g. a stale bend preview opened
-    just before the user starts a wall fillet) — one Esc must clear them
-    all rather than forcing the user to tap Esc once per preview.
-
-    Tags 3D viewports for redraw on success — the Esc keymap entry runs
-    outside a viewport mouse event so the gizmo poll wouldn't re-evaluate
-    until the next interaction without an explicit redraw."""
-    cancelled = False
-    for attr, op_name in PREVIEW_CANCEL_OPS:
-        if is_preview_active(context, attr):
-            getattr(bpy.ops.bim, op_name)()
-            cancelled = True
-    if cancelled:
-        tool.Blender.update_all_viewports(context)
-    return cancelled
-
-
-def discard_pending_previews(scene: bpy.types.Scene) -> None:
-    """Clear every active preview under ``Scene.BIMPreviewProperties`` so
-    saved preview state never resurfaces on file load.
-
-    Mirrors ``tool.Parametric.heal_stale_edit_flags`` for the object-level
-    parametric-edit lifecycle — except previews are *discarded* rather than
-    validated. A preview's only UI cue is its in-viewport widget; reloading
-    a ``.blend`` saved mid-preview restores the flag but not the surrounding
-    user attention, and a stuck ``is_active`` silently hides every sibling
-    gizmo poll gated on it.
-
-    Iterates ``PREVIEW_CANCEL_OPS`` so any preview registered for Esc
-    cancellation is automatically covered here too. Sets ``is_active``
-    directly rather than dispatching the cancel operator: load_post may
-    fire before ``bpy.context.screen`` is reattached, and the cancel
-    operators bail on ``context.screen is None``."""
-    preview = getattr(scene, "BIMPreviewProperties", None)
-    if preview is None:
-        return
-    for attr, _op_name in PREVIEW_CANCEL_OPS:
-        child = getattr(preview, attr, None)
-        if child is not None and getattr(child, "is_active", False):
-            child.is_active = False
@@ -545,7 +545,7 @@ class ChangeTypePage(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.change_type_page"
    bl_label = "Change Type Page"
    bl_options = {"REGISTER"}
-    page: bpy.props.IntProperty()
+    page: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        page: int
@@ -271,7 +271,7 @@ class ExtendProfile(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.extend_profile"
    bl_label = "Extend Profile"
    bl_options = {"REGISTER", "UNDO"}
-    join_type: bpy.props.EnumProperty(
+    join_type: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[("-", "Unjoin", ""), ("L", "L", ""), ("V", "V", ""), ("T", "T", "")],
        default="-",
    )
@@ -15,8 +15,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import math
 from collections.abc import Callable
@@ -195,32 +193,6 @@ def update_stair(self: "BIMStairProperties", context: bpy.types.Context) -> None
        _get_updater("stair", "regenerate_stair_mesh")(obj)


-def update_wall(self: "BIMWallProperties", context: bpy.types.Context) -> None:
-    """Regenerate wall mesh preview when property changes. Does NOT touch IFC."""
-    obj = context.active_object
-    if obj and self.is_editing:
-        _get_updater("wall", "regenerate_wall_mesh_from_props")(obj)
-
-
-def update_wall_offset_baseline(self: "BIMWallProperties", context: bpy.types.Context) -> None:
-    """Recompute the preview-only ``offset`` when the draft baseline cycles. Does not touch IFC.
-
-    ``offset`` itself has no ``update`` callback on purpose — adding one would make
-    every baseline cycle rebuild the bmesh twice (once via offset's callback, once
-    explicitly below)."""
-    obj = context.active_object
-    if not (obj and self.is_editing):
-        return
-    t = self.thickness
-    if self.desired_offset_baseline == "CENTER":
-        self.offset = -t / 2
-    elif self.desired_offset_baseline == "INTERIOR":
-        self.offset = -t
-    else:  # EXTERIOR
-        self.offset = 0.0
-    _get_updater("wall", "regenerate_wall_mesh_from_props")(obj)
-
-
 def update_railing(self: "BIMRailingProperties", context: bpy.types.Context) -> None:
    """Regenerate railing mesh when property changes."""
    if self.is_editing:
@@ -1659,118 +1631,6 @@ class BIMRoofProperties(PropertyGroup):
            setattr(target_props, prop_name, prop_value)


-class BIMWallProperties(PropertyGroup):
-    """Transient draft state for parametric wall gizmo editing.
-
-    Populated from IFC on `bim.enable_editing_wall`, mutated by gizmo drags during edit
-    (preview only — no IFC writes), and either committed by `bim.finish_editing_wall`
-    or discarded by `bim.cancel_editing_wall`.
-
-    The `snap_*` fields are the values captured on enable; `finish_editing_wall` compares
-    current vs snap to skip unchanged params and guarantee a no-op session leaves the
-    IFC file byte-identical.
-    """
-
-    is_editing: bpy.props.BoolProperty(
-        default=False,
-        description="True while wall parametric edit mode is active.",
-    )
-    mesh_dirty: bpy.props.BoolProperty(
-        default=False,
-        options={"HIDDEN", "SKIP_SAVE"},
-        description=(
-            "True while the visible mesh is the preview box; cleared once the real "
-            "IFC-derived geometry is restored (on commit or cancel)."
-        ),
-    )
-    length: bpy.props.FloatProperty(
-        name="Length",
-        default=1.0,
-        min=0.01,
-        subtype="DISTANCE",
-        update=update_wall,
-        description="Wall length along its reference axis (preview value; committed on finish).",
-    )
-    height: bpy.props.FloatProperty(
-        name="Height",
-        default=3.0,
-        min=0.01,
-        subtype="DISTANCE",
-        update=update_wall,
-        description="Wall vertical height (preview value; committed on finish).",
-    )
-    x_angle: bpy.props.FloatProperty(
-        name="Slope (X Angle)",
-        default=0.0,
-        soft_min=-math.pi / 3,
-        soft_max=math.pi / 3,
-        subtype="ANGLE",
-        update=update_wall,
-        description="Slope angle: tilt of the wall's top face along +Y (preview value; committed on finish).",
-    )
-    thickness: bpy.props.FloatProperty(
-        name="Thickness",
-        default=0.2,
-        min=0.001,
-        subtype="DISTANCE",
-        description="Wall thickness captured from IFC at edit-enable; not gizmo-bound.",
-    )
-    offset: bpy.props.FloatProperty(
-        name="Offset",
-        default=0.0,
-        subtype="DISTANCE",
-        description="Layer-set offset captured from IFC at edit-enable; driven by desired_offset_baseline.",
-    )
-    desired_offset_baseline: bpy.props.EnumProperty(
-        items=[
-            ("EXTERIOR", "Exterior", "Reference axis at the exterior face"),
-            ("CENTER", "Center", "Reference axis at the wall centreline"),
-            ("INTERIOR", "Interior", "Reference axis at the interior face"),
-        ],
-        name="Desired Offset Baseline",
-        default="CENTER",
-        update=update_wall_offset_baseline,
-        description="Which face of the wall the reference axis aligns to (preview value; committed on finish).",
-    )
-    anchor_x: bpy.props.FloatProperty(
-        default=0.0,
-        subtype="DISTANCE",
-        description="Local-X of the wall's axis polyline start, so the preview box lands where the IFC mesh does.",
-    )
-
-    snap_length: bpy.props.FloatProperty(description="Snapshot of length at edit-enable; commit skips no-op writes.")
-    snap_height: bpy.props.FloatProperty(description="Snapshot of height at edit-enable; commit skips no-op writes.")
-    snap_thickness: bpy.props.FloatProperty(
-        description="Snapshot of thickness at edit-enable; commit skips no-op writes."
-    )
-    snap_offset: bpy.props.FloatProperty(description="Snapshot of offset at edit-enable; commit skips no-op writes.")
-    snap_x_angle: bpy.props.FloatProperty(
-        subtype="ANGLE",
-        description="Snapshot of x_angle at edit-enable; commit skips no-op writes.",
-    )
-    snap_offset_baseline: bpy.props.StringProperty(
-        default="",
-        description="Snapshot of desired_offset_baseline at edit-enable; commit skips no-op writes.",
-    )
-
-    if TYPE_CHECKING:
-        is_editing: bool
-        mesh_dirty: bool
-        length: float
-        height: float
-        x_angle: float
-        thickness: float
-        offset: float
-        desired_offset_baseline: Literal["EXTERIOR", "CENTER", "INTERIOR"]
-        anchor_x: float
-        snap_length: float
-        snap_height: float
-        snap_thickness: float
-        snap_offset: float
-        snap_x_angle: float
-        snap_offset_baseline: str
-
-
 class SnapMousePoint(PropertyGroup):
    x: bpy.props.FloatProperty(name="X")
    y: bpy.props.FloatProperty(name="Y")
@@ -1869,20 +1729,20 @@ def poll_sverchok_nodes(self: "BIMExternalParametricGeometryProperties", node_tr


 class BIMExternalParametricGeometryProperties(bpy.types.PropertyGroup):
-    is_editing: bpy.props.BoolProperty(
+    is_editing: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Is Editing Paramteric Geometry",
        description="Toggle editing parametric geometry.",
        default=False,
        update=update_is_editing,
    )
-    geometry_source: bpy.props.EnumProperty(
+    geometry_source: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Geometry Source",
        items=[
            ("GEONODES", "Geometry Nodes", ""),
            ("IFCSVERCHOK", "IFC Sverchok", ""),
        ],
    )
-    geo_nodes: bpy.props.PointerProperty(
+    geo_nodes: bpy.props.PointerProperty(  # pyright: ignore[reportRedeclaration]
        name="Geometry Nodes",
        description="Geometry nodes tree to use as a source for representation.",
        type=bpy.types.GeometryNodeTree,
@@ -1890,7 +1750,7 @@ class BIMExternalParametricGeometryProperties(bpy.types.PropertyGroup):
        poll=lambda self, node_tree: not node_tree.name.startswith("BBIM_EPG"),
    )

-    sverchok_nodes: bpy.props.PointerProperty(
+    sverchok_nodes: bpy.props.PointerProperty(  # pyright: ignore[reportRedeclaration]
        name="Sverchok Nodes",
        description="Sverchok node tree to use as a source for representation.",
        type=bpy.types.NodeTree,
@@ -1902,65 +1762,3 @@ class BIMExternalParametricGeometryProperties(bpy.types.PropertyGroup):
        geometry_source: Literal["GEONODES", "IFCSVERCHOK"]
        geo_nodes: Union[bpy.types.GeometryNodeTree, None]
        sverchok_nodes: Union[sverchok.node_tree.SverchCustomTree, None]
-
-
-class BIMWallFilletPreviewProperties(PropertyGroup):
-    """Scene-level pending state for the wall-fillet preview flow.
-
-    Scene-level because the fillet spans two walls and commits a third
-    (corner) wall between them. ``SKIP_SAVE`` fields throughout."""
-
-    is_active: bpy.props.BoolProperty(
-        default=False,
-        options={"SKIP_SAVE"},
-        description="True while the wall-fillet preview flow is active.",
-    )
-    wall_a_id: bpy.props.IntProperty(
-        default=0,
-        options={"SKIP_SAVE"},
-        description=(
-            "IFC element id of the active wall — the corner wall inherits its "
-            "material layer set, height, x_angle, and type."
-        ),
-    )
-    wall_b_id: bpy.props.IntProperty(
-        default=0,
-        options={"SKIP_SAVE"},
-        description="IFC element id of the other selected wall.",
-    )
-    radius: bpy.props.FloatProperty(
-        name="Radius",
-        default=0.5,
-        soft_min=-10.0,
-        soft_max=10.0,
-        subtype="DISTANCE",
-        unit="LENGTH",
-        options={"SKIP_SAVE"},
-        description="Radius of the circular arc connecting the two walls.",
-    )
-    editing_corner_id: bpy.props.IntProperty(
-        default=0,
-        options={"SKIP_SAVE"},
-        description=(
-            "IFC element id of an existing fillet corner being re-edited "
-            "(non-zero only on the pen-icon re-edit flow). The create "
-            "operator deletes this corner + its connections before recreating "
-            "with the new radius."
-        ),
-    )
-
-    if TYPE_CHECKING:
-        is_active: bool
-        wall_a_id: int
-        wall_b_id: int
-        radius: float
-        editing_corner_id: int
-
-
-class BIMPreviewProperties(PropertyGroup):
-    """Umbrella for parametric-edit preview drafts attached to ``Scene``."""
-
-    wall_fillet: bpy.props.PointerProperty(type=BIMWallFilletPreviewProperties)
-
-    if TYPE_CHECKING:
-        wall_fillet: BIMWallFilletPreviewProperties
@@ -34,7 +34,6 @@ import bonsai.core.root
 import bonsai.tool as tool
 from bonsai.bim.module.model.data import RailingData, refresh
 from bonsai.bim.module.model.decorator import ProfileDecorator
-from bonsai.bim.parametric_lifecycle import PathPreservingEditMixin

 # reference:
 # https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRailing.htm
@@ -93,6 +92,7 @@ def update_railing_modifier_ifc_data(context: bpy.types.Context) -> None:
        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())

        representation_data = {
+            "railing_type": props.railing_type,
            "context": body,
            "railing_path": railing_path,
            "use_manual_supports": props.use_manual_supports,
@@ -406,65 +406,66 @@ class CopyRailingParameters(bpy.types.Operator, tool.Ifc.Operator):
        return {"FINISHED"}


-class _RailingEditMixin(PathPreservingEditMixin):
-    """Type-specific hooks for railing parametric-edit operators. Single-object
-    (active_object). ``path_data`` is preserved through the edit; the separate
-    ``Enable/Finish/CancelEditingRailingPath`` operators handle path editing."""
-
-    pset_name = "BBIM_Railing"
-
-    @classmethod
-    def _is_element_type(cls, element):
-        return tool.Blender.Modifier.is_railing(element)
-
-    @classmethod
-    def _get_props(cls, obj: bpy.types.Object):
-        return tool.Model.get_railing_props(obj)
-
-    @classmethod
-    def _post_load_data(cls, data: dict) -> dict:
-        # BIMRailingProperties.path_data is a StringProperty holding JSON.
-        data["path_data"] = json.dumps(data["path_data"])
-        return data
-
-    @classmethod
-    def _update_pset(cls, element, data: dict) -> None:
-        update_bbim_railing_pset(element, data)
-
-    @classmethod
-    def _update_modifier_ifc_data(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        update_railing_modifier_ifc_data(context)
-
-    @classmethod
-    def _update_modifier_bmesh(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        update_railing_modifier_bmesh(context)
-
-
-class EnableEditingRailing(_RailingEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class EnableEditingRailing(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.enable_editing_railing"
    bl_label = "Enable Editing Railing"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context):
-        return self._enable_targets(context)
+        obj = context.active_object
+        assert obj
+        props = tool.Model.get_railing_props(obj)
+        data = tool.Model.get_modeling_bbim_pset_data(obj, "BBIM_Railing")["data_dict"]
+        data["path_data"] = json.dumps(data["path_data"])
+
+        # required since we could load pset from .ifc and BIMRailingProperties won't be set
+        props.set_props_kwargs_from_ifc_data(data)
+
+        props.is_editing = True
+        return {"FINISHED"}


-class CancelEditingRailing(_RailingEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class CancelEditingRailing(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.cancel_editing_railing"
    bl_label = "Cancel Editing Railing"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context):
-        return self._cancel_targets(context)
+        obj = context.active_object
+        assert obj
+        data = tool.Model.get_modeling_bbim_pset_data(obj, "BBIM_Railing")["data_dict"]
+        props = tool.Model.get_railing_props(obj)
+
+        # restore previous settings since editing was canceled
+        props.set_props_kwargs_from_ifc_data(data)
+        update_railing_modifier_bmesh(context)
+
+        props.is_editing = False
+        return {"FINISHED"}


-class FinishEditingRailing(_RailingEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class FinishEditingRailing(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.finish_editing_railing"
    bl_label = "Finish Editing Railing"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context):
-        return self._finish_targets(context)
+        obj = context.active_object
+        assert obj
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        props = tool.Model.get_railing_props(obj)
+
+        pset_data = tool.Model.get_modeling_bbim_pset_data(bpy.context.active_object, "BBIM_Railing")
+        path_data = pset_data["data_dict"]["path_data"]
+
+        railing_data = props.get_general_kwargs(convert_to_project_units=True)
+        railing_data["path_data"] = path_data
+        props.is_editing = False
+
+        update_bbim_railing_pset(element, railing_data)
+        update_railing_modifier_ifc_data(context)
+        return {"FINISHED"}


 class FlipRailingPathOrder(bpy.types.Operator, tool.Ifc.Operator):
@@ -34,7 +34,6 @@ import bonsai.core.root
 import bonsai.tool as tool
 from bonsai.bim.module.model.data import RoofData, refresh
 from bonsai.bim.module.model.decorator import ProfileDecorator
-from bonsai.bim.parametric_lifecycle import PathPreservingEditMixin

 # reference:
 # https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRoof.htm
@@ -609,59 +608,61 @@ class AddRoof(bpy.types.Operator, tool.Ifc.Operator):
        tool.Model.add_body_representation(obj)


-class _RoofEditMixin(PathPreservingEditMixin):
-    """Type-specific hooks for roof parametric-edit operators. Single-object
-    (active_object). ``path_data`` is preserved through the edit; the separate
-    ``Enable/Finish/CancelEditingRoofPath`` operators handle path editing."""
-
-    pset_name = "BBIM_Roof"
-
-    @classmethod
-    def _is_element_type(cls, element):
-        return tool.Blender.Modifier.is_roof(element)
-
-    @classmethod
-    def _get_props(cls, obj: bpy.types.Object):
-        return tool.Model.get_roof_props(obj)
-
-    @classmethod
-    def _update_pset(cls, element, data: dict) -> None:
-        update_bbim_roof_pset(element, data)
-
-    @classmethod
-    def _update_modifier_ifc_data(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        update_roof_modifier_ifc_data(context)
-
-    @classmethod
-    def _update_modifier_bmesh(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        update_roof_modifier_bmesh(obj)
-
-
-class EnableEditingRoof(_RoofEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class EnableEditingRoof(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.enable_editing_roof"
    bl_label = "Enable Editing Roof"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context):
-        return self._enable_targets(context)
+        obj = context.active_object
+        assert obj
+        props = tool.Model.get_roof_props(obj)
+        data = tool.Model.get_modeling_bbim_pset_data(obj, "BBIM_Roof")["data_dict"]
+        # required since we could load pset from .ifc and BIMRoofProperties won't be set
+        props.set_props_kwargs_from_ifc_data(data)
+        props.is_editing = True
+        return {"FINISHED"}


-class CancelEditingRoof(_RoofEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class CancelEditingRoof(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.cancel_editing_roof"
    bl_label = "Cancel Editing Roof"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context):
-        return self._cancel_targets(context)
+        obj = context.active_object
+        assert obj
+        data = tool.Model.get_modeling_bbim_pset_data(obj, "BBIM_Roof")["data_dict"]
+        props = tool.Model.get_roof_props(obj)
+
+        # restore previous settings since editing was canceled
+        props.set_props_kwargs_from_ifc_data(data)
+        update_roof_modifier_bmesh(obj)
+
+        props.is_editing = False
+        return {"FINISHED"}


-class FinishEditingRoof(_RoofEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class FinishEditingRoof(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.finish_editing_roof"
    bl_label = "Finish Editing Roof"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context):
-        return self._finish_targets(context)
+        obj = context.active_object
+        element = tool.Ifc.get_entity(obj)
+        props = tool.Model.get_roof_props(obj)
+
+        pset_data = tool.Model.get_modeling_bbim_pset_data(obj, "BBIM_Roof")
+        path_data = pset_data["data_dict"]["path_data"]
+
+        roof_data = props.get_general_kwargs(convert_to_project_units=True)
+        roof_data["path_data"] = path_data
+        props.is_editing = False
+
+        update_bbim_roof_pset(element, roof_data)
+        update_roof_modifier_ifc_data(context)
+        return {"FINISHED"}


 class EnableEditingRoofPath(bpy.types.Operator, tool.Ifc.Operator):
@@ -15,8 +15,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import json

@@ -264,6 +262,7 @@ class FinishEditingStair(bpy.types.Operator, tool.Ifc.Operator):

        # Use the special method that includes custom_tread_lock for IFC storage
        data = props.get_props_kwargs_for_ifc_export(convert_to_project_units=True)
+        props.is_editing = False
        regenerate_stair_mesh(obj)
        tool.Model.add_body_representation(obj)

@@ -273,7 +272,6 @@ class FinishEditingStair(bpy.types.Operator, tool.Ifc.Operator):

        # update IfcStairFlight properties
        update_ifc_stair_props(obj)
-        props.is_editing = False
        return {"FINISHED"}


@@ -430,7 +428,7 @@ class CycleStairType(bpy.types.Operator, gizmo.CycleTypeMixin):
    bl_label = "Cycle Stair Type"
    bl_options = {"REGISTER", "UNDO"}

-    props_getter = tool.Model.get_stair_props
+    props_getter = "get_stair_props"
    type_literal = tool.Model.StairType
    type_attr = "stair_type"
    skip_element_check = True
@@ -580,7 +578,7 @@ class GizmoStairEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
    ]

    # Metadata-driven dispatch for props and preferences
-    props_getter = tool.Model.get_stair_props
+    props_getter = "get_stair_props"
    gizmo_pref_name = "stair"

    @classmethod
@@ -593,12 +591,14 @@ class GizmoStairEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
            "VIEW3D_GT_lock",
            self.COLOR_BLUE,
            "bim.toggle_stair_property",
+            prop_path="BIMStairProperties.total_length_lock",
            property_name="total_length_lock",
        )
        self.tread_lock_gizmo = self.create_icon_gizmo(
            "VIEW3D_GT_lock",
            (1.0, 1.0, 1.0),
            "bim.toggle_stair_property",
+            prop_path="BIMStairProperties.custom_tread_lock",
            property_name="custom_tread_lock",
        )
        self.plus_gizmo = self.create_icon_gizmo(
@@ -608,23 +608,29 @@ class GizmoStairEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
            "VIEW3D_GT_minus", self.COLOR_RED, "bim.adjust_stair_treads", increment=-1
        )

-    def _refresh_element_specific(
-        self, context: bpy.types.Context, mw: Matrix, props: "BIMStairProperties"  # noqa: ARG002
-    ) -> None:
-        """Update stair-specific lock and tread count gizmos. Lock positioning is
-        handled per-frame in the dimension-positioning hook."""
-        self.update_lock_gizmo(props)
+    def _refresh_element_specific(self, context: bpy.types.Context, mw: Matrix, props: "BIMStairProperties") -> None:
+        """Update stair-specific lock and tread count gizmos."""
+        billboard_rot = gizmo.get_billboard_rotation(context)
+        self.update_lock_gizmo(mw, props, billboard_rot)
        self.update_tread_lock_gizmo(props)
        self.update_tread_count_gizmos(props)

-    def update_lock_gizmo(self, props: "BIMStairProperties") -> None:
-        """Update lock gizmo color and visibility. Positioning is handled
-        per-frame by the dimension-positioning hook."""
+    def update_lock_gizmo(self, mw: Matrix, props: "BIMStairProperties", billboard_rot: Matrix) -> None:
+        """Update lock gizmo visibility, color, and position."""
        gizmo_prefs = self.get_gizmo_prefs()
        if not self.update_gizmo_visibility(self.lock_gizmo, props.is_editing, gizmo_prefs.lock):
-            return  # Hidden, skip color update
+            return  # Hidden, skip positioning
+
        self.lock_gizmo.color = self.COLOR_RED if props.total_length_lock else self.COLOR_GREEN

+        total_run = props.get_total_run()
+        local_transform = (
+            Matrix.Translation(Vector((total_run + self.ICON_Z_OFFSET, -self.GIZMO_OFFSET, -self.GIZMO_OFFSET)))
+            @ billboard_rot
+            @ Matrix.Scale(self.EDITING_ICON_SCALE, 4)
+        )
+        self.lock_gizmo.matrix_basis = mw @ local_transform
+
    def update_tread_lock_gizmo(self, props: "BIMStairProperties") -> None:
        """Update visibility of tread lock gizmo. Positioning is handled in _update_editing_icon_positions."""
        if not hasattr(self, "tread_lock_gizmo"):
@@ -644,11 +650,11 @@ class GizmoStairEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
        )

    def _update_dimension_gizmo_positions(
-        self, context: bpy.types.Context, mw: Matrix, props: "BIMStairProperties"  # noqa: ARG002
+        self, context: bpy.types.Context, mw: Matrix, props: "BIMStairProperties"
    ) -> None:
        """Update dimension gizmo positions based on camera view direction."""
-        viewing_from_negative_y, viewing_from_negative_x = self._frame_view_dir
-        billboard_rot = self._frame_billboard_rot
+        viewing_from_negative_y, viewing_from_negative_x = self.get_local_view_direction(context, mw)
+        billboard_rot = gizmo.get_billboard_rotation(context)
        total_run = props.get_total_run()
        riser_height = props.get_riser_height()

@@ -24,7 +24,6 @@ from typing import TYPE_CHECKING, Any
 import bpy
 from bpy.types import Panel

-import ifcopenshell.util.unit
 import bonsai.bim
 import bonsai.tool as tool
 from bonsai.bim.helper import prop_with_search
@@ -304,8 +303,6 @@ class BIM_PT_stair(bpy.types.Panel):
            row = self.layout.row(align=True)
            row.label(text="Stair parameters", icon="IPO_CONSTANT")

-            si_conversion = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
-
            if props.is_editing:
                calculated_params = tool.Model.get_active_stair_calculated_params()
                row = self.layout.row(align=True)
@@ -325,61 +322,22 @@ class BIM_PT_stair(bpy.types.Panel):
                        row.label(text=f"{prop_name}:")
                        row = self.layout.row(align=True)
                        for prop_value_item in prop_value:
-                            if isinstance(prop_value_item, float):
-                                row.label(text=tool.Unit.format_distance(prop_value_item * si_conversion))
-                            else:
-                                row.label(text=str(prop_value_item))
+                            row.label(text=str(prop_value_item))
                    else:
                        row.label(text=prop_name)
-                        if isinstance(prop_value, float):
-                            row.label(text=tool.Unit.format_distance(prop_value * si_conversion))
-                        else:
-                            row.label(text=str(prop_value))
+                        row.label(text=str(prop_value))

            # calculated properties
            for prop_name, prop_value in calculated_params.items():
                row = self.layout.row(align=True)
                row.label(text=prop_name)
-                if isinstance(prop_value, float):
-                    row.label(text=tool.Unit.format_distance(prop_value * si_conversion))
-                else:
-                    row.label(text=str(prop_value))
+                row.label(text=str(prop_value))
        else:
            row = self.layout.row()
            row.label(text="No Stair Found")
            row.operator("bim.add_stair", icon="ADD", text="")


-class BIM_PT_wall(bpy.types.Panel):
-    bl_label = "Wall"
-    bl_idname = "BIM_PT_wall"
-    bl_space_type = "PROPERTIES"
-    bl_region_type = "WINDOW"
-    bl_context = "scene"
-    bl_options = {"DEFAULT_CLOSED"}
-    bl_parent_id = "BIM_PT_tab_parametric_geometry"
-
-    @classmethod
-    def poll(cls, context):
-        obj = context.active_object
-        if not obj:
-            return False
-        element = tool.Ifc.get_entity(obj)
-        return bool(element) and tool.Blender.Modifier.is_wall(element)
-
-    def draw(self, context):
-        obj = context.active_object
-        if obj is None:
-            return
-        props = tool.Model.get_wall_props(obj)
-        row = self.layout.row(align=True)
-        if props.is_editing:
-            row.operator("bim.finish_editing_wall", icon="CHECKMARK", text="Finish Editing")
-            row.operator("bim.cancel_editing_wall", icon="CANCEL", text="")
-        else:
-            row.operator("bim.enable_editing_wall", icon="GREASEPENCIL", text="Edit Wall")
-
-
 class BIM_PT_sverchok(bpy.types.Panel):
    bl_label = "Sverchok"
    bl_idname = "BIM_PT_sverchok"
@@ -39,7 +39,6 @@ import bonsai.core.root
 import bonsai.tool as tool
 from bonsai.bim.module.drawing import gizmos as gizmo
 from bonsai.bim.module.drawing.gizmos import DimensionGizmoConfig
-from bonsai.bim.parametric_lifecycle import FeatureModifierEditMixin

 if TYPE_CHECKING:
    from bonsai.bim.module.model.prop import BIMWindowProperties
@@ -483,53 +482,90 @@ class AddWindow(bpy.types.Operator, tool.Ifc.Operator):
        return {"FINISHED"}


-class _WindowEditMixin(FeatureModifierEditMixin):
-    """Type-specific hooks for window parametric-edit operators. Single-object
-    by design (window edits target the active object only)."""
-
-    pset_name = "BBIM_Window"
-
-    @classmethod
-    def _is_element_type(cls, element):
-        return tool.Blender.Modifier.is_window(element)
-
-    @classmethod
-    def _get_props(cls, obj: bpy.types.Object):
-        return tool.Model.get_window_props(obj)
-
-    @classmethod
-    def _update_modifier_representation(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        update_window_modifier_representation(context)
-
-
-class CancelEditingWindow(_WindowEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class CancelEditingWindow(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.cancel_editing_window"
    bl_label = "Cancel Editing Window"
    bl_description = "Cancel editing and revert window parameters to their previous values"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context: bpy.types.Context) -> set[str]:
-        return self._cancel_targets(context)
+        obj = context.active_object
+        assert obj
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Window", "Data"))
+        data.update(data.pop("lining_properties"))
+        data.update(data.pop("panel_properties"))
+        props = tool.Model.get_window_props(obj)
+        props.set_props_kwargs_from_ifc_data(data)
+
+        body = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
+        bonsai.core.geometry.switch_representation(
+            tool.Ifc,
+            tool.Geometry,
+            obj=obj,
+            representation=body,
+        )
+
+        props.is_editing = False
+        return {"FINISHED"}


-class FinishEditingWindow(_WindowEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class FinishEditingWindow(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.finish_editing_window"
    bl_label = "Finish Editing Window"
    bl_description = "Apply changes and finish editing window parameters"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context: bpy.types.Context) -> set[str]:
-        return self._finish_targets(context)
+        obj = context.active_object
+        assert obj
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        props = tool.Model.get_window_props(obj)
+
+        window_data = props.get_general_kwargs(convert_to_project_units=True)
+        lining_props = props.get_lining_kwargs(convert_to_project_units=True)
+        panel_props = props.get_panel_kwargs(convert_to_project_units=True)
+
+        window_data["lining_properties"] = lining_props
+        window_data["panel_properties"] = panel_props
+
+        props.is_editing = False
+
+        update_window_modifier_representation(context)
+        element_type = ifcopenshell.util.element.get_type(element)
+        if element_type:
+            tool.Model.mark_thumbnail_for_update(element_type)
+
+        pset = tool.Pset.get_element_pset(element, "BBIM_Window")
+        window_data = tool.Ifc.get().createIfcText(json.dumps(window_data, default=list))
+        ifcopenshell.api.pset.edit_pset(tool.Ifc.get(), pset=pset, properties={"Data": window_data})
+        return {"FINISHED"}


-class EnableEditingWindow(_WindowEditMixin, bpy.types.Operator, tool.Ifc.Operator):
+class EnableEditingWindow(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.enable_editing_window"
    bl_label = "Enable Editing Window"
    bl_description = "Enter edit mode to modify window parameters interactively"
-    bl_options = {"REGISTER", "UNDO"}
+    bl_options = {"REGISTER"}

    def _execute(self, context: bpy.types.Context) -> set[str]:
-        return self._enable_targets(context)
+        obj = context.active_object
+        assert obj
+        props = tool.Model.get_window_props(obj)
+        element = tool.Ifc.get_entity(obj)
+        assert element
+        data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Window", "Data"))
+        data.update(data.pop("lining_properties"))
+        data.update(data.pop("panel_properties"))
+        data.update(tool.Model.get_constituents_props_data(element))
+
+        # required since we could load pset from .ifc and BIMWindowProperties won't be set
+        props.set_props_kwargs_from_ifc_data(data)
+
+        props.is_editing = True
+        return {"FINISHED"}


 class RemoveWindow(bpy.types.Operator, tool.Ifc.Operator):
@@ -558,8 +594,8 @@ class CycleWindowType(bpy.types.Operator, tool.Ifc.Operator, gizmo.CycleTypeMixi
    bl_label = "Cycle Window Type"
    bl_options = {"REGISTER", "UNDO"}

-    element_checker = tool.Parametric.is_window
-    props_getter = tool.Model.get_window_props
+    element_checker = "is_window"
+    props_getter = "get_window_props"
    type_literal = tool.Model.WindowType
    type_attr = "window_type"

@@ -745,7 +781,7 @@ class GizmoWindowEdition(bpy.types.GizmoGroup, gizmo.BaseParametricGizmoGroup):
        DimensionGizmoConfig(attr_name="lining_offset", axis=(0, 1, 0), min_value=-10.0),
    ]

-    props_getter = tool.Model.get_window_props
+    props_getter = "get_window_props"
    gizmo_pref_name = "window"

    @classmethod
@@ -841,7 +841,7 @@ class EditObjectUI:
        row = cls.layout.row(align=True)
        row.separator()
        row.label(text="Operations") if ui_context != "TOOL_HEADER" else row
-        cls.draw_regen_operations(row, ui_context)
+        cls.draw_regen_operations(row)

        if AuthoringData.data["active_material_usage"] == "LAYER2":
            row = cls.layout.row(align=True) if ui_context != "TOOL_HEADER" else row
@@ -962,14 +962,20 @@ class EditObjectUI:
        return row

    @classmethod
-    def draw_regen_operations(cls, row, ui_context):
+    def draw_regen_operations(cls, row):
+        custom_icon = custom_icon_previews.get("REGEN", custom_icon_previews["IFC"]).icon_id
+
        if AuthoringData.data["is_regenable_element"]:
-            row = cls.layout.row(align=True) if ui_context != "TOOL_HEADER" else row
-            add_layout_hotkey_operator(row, "Regen", "S_G", "Recalculate Element Geometry", ui_context)
+            op = row.operator("bim.hotkey", text="", icon_value=custom_icon)
+            description = "Recalculate Element Geometry\nHotkey: S G"
+            op.hotkey = "S_G"
+            op.description = description.strip()

        if PortData.data["total_ports"] > 0:
-            row = cls.layout.row(align=True) if ui_context != "TOOL_HEADER" else row
-            add_layout_hotkey_operator(row, "Regen", "S_G", bpy.ops.bim.regenerate_distribution_element.__doc__, ui_context)
+            op = row.operator("bim.hotkey", text="", icon_value=custom_icon)
+            description = f"{bpy.ops.bim.regenerate_distribution_element.__doc__}\n\nHotkey: S G"
+            op.hotkey = "S_G"
+            op.description = description.strip()

    @classmethod
    def draw_void(cls, context, row):
@@ -1294,15 +1300,9 @@ class Hotkey(bpy.types.Operator, tool.Ifc.Operator):
                bpy.ops.bim.generate_space()
            return
        if self.active_material_usage == "LAYER2":
-            if element and tool.Model.has_underside_connection(element):
-                bpy.ops.bim.regenerate_wall_to_underside()
-            else:
-                bpy.ops.bim.recalculate_wall()
+            bpy.ops.bim.recalculate_wall()
        elif self.active_material_usage == "LAYER3":
            bpy.ops.bim.recalculate_slab()
-            wall_objs = tool.Model.get_connected_wall_objs(element)
-            if wall_objs:
-                core.regenerate_wall_to_underside(tool.Ifc, tool.Geometry, tool.Model, wall_objs)
        elif tool.System.get_ports(element):
            bpy.ops.bim.regenerate_distribution_element()
        elif self.active_material_usage == "PROFILE":
@@ -101,7 +101,7 @@ class NestDecorator:
        cls.is_installed = False

    def dotted_line_shader(self):
-        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")
+        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")  # ty:ignore[too-many-positional-arguments]
        vert_out.smooth("FLOAT", "v_ArcLength")

        shader_info = gpu.types.GPUShaderCreateInfo()
@@ -33,7 +33,7 @@ class EnableEditingPerson(bpy.types.Operator):
    bl_idname = "bim.enable_editing_person"
    bl_label = "Enable Editing Person"
    bl_options = {"REGISTER", "UNDO"}
-    person: bpy.props.IntProperty()
+    person: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        person: int
@@ -75,7 +75,7 @@ class RemovePerson(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_person"
    bl_label = "Remove Person"
    bl_options = {"REGISTER", "UNDO"}
-    person: bpy.props.IntProperty()
+    person: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        person: int
@@ -88,7 +88,7 @@ class AddPersonAttribute(bpy.types.Operator):
    bl_idname = "bim.add_person_attribute"
    bl_label = "Add Person Attribute"
    bl_options = {"REGISTER", "UNDO"}
-    name: bpy.props.EnumProperty(
+    name: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=tuple((i, i, "") for i in get_args(tool.Owner.PersonAttributeType)),
    )

@@ -104,10 +104,10 @@ class RemovePersonAttribute(bpy.types.Operator):
    bl_idname = "bim.remove_person_attribute"
    bl_label = "Remove Person Attribute"
    bl_options = {"REGISTER", "UNDO"}
-    name: bpy.props.EnumProperty(
+    name: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=tuple((i, i, "") for i in get_args(tool.Owner.PersonAttributeType)),
    )
-    id: bpy.props.IntProperty()
+    id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        name: tool.Owner.PersonAttributeType  # pyright: ignore[reportIncompatibleVariableOverride]
@@ -122,7 +122,7 @@ class EnableEditingRole(bpy.types.Operator):
    bl_idname = "bim.enable_editing_role"
    bl_label = "Enable Editing Role"
    bl_options = {"REGISTER", "UNDO"}
-    role: bpy.props.IntProperty()
+    role: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        role: int
@@ -146,7 +146,7 @@ class AddRole(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_role"
    bl_label = "Add Role"
    bl_options = {"REGISTER", "UNDO"}
-    parent: bpy.props.IntProperty()
+    parent: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        parent: int
@@ -168,7 +168,7 @@ class RemoveRole(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_role"
    bl_label = "Remove Role"
    bl_options = {"REGISTER", "UNDO"}
-    role: bpy.props.IntProperty()
+    role: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        role: int
@@ -181,8 +181,8 @@ class AddAddress(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_address"
    bl_label = "Add Address"
    bl_options = {"REGISTER", "UNDO"}
-    parent: bpy.props.IntProperty()
-    ifc_class: bpy.props.EnumProperty(
+    parent: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    ifc_class: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=tuple((i, i, "") for i in get_args(ADDRESS_TYPE)),
    )

@@ -198,7 +198,7 @@ class AddAddressAttribute(bpy.types.Operator):
    bl_idname = "bim.add_address_attribute"
    bl_label = "Add Address Attribute"
    bl_options = {"REGISTER", "UNDO"}
-    name: bpy.props.EnumProperty(
+    name: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=tuple((i, i, "") for i in get_args(tool.Owner.AddressAttributeType)),
    )

@@ -214,10 +214,10 @@ class RemoveAddressAttribute(bpy.types.Operator):
    bl_idname = "bim.remove_address_attribute"
    bl_label = "Remove Address Attribute"
    bl_options = {"REGISTER", "UNDO"}
-    name: bpy.props.EnumProperty(
+    name: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=tuple((i, i, "") for i in get_args(tool.Owner.AddressAttributeType)),
    )
-    id: bpy.props.IntProperty()
+    id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        name: tool.Owner.AddressAttributeType  # pyright: ignore[reportIncompatibleVariableOverride]
@@ -232,7 +232,7 @@ class EnableEditingAddress(bpy.types.Operator):
    bl_idname = "bim.enable_editing_address"
    bl_label = "Enable Editing Address"
    bl_options = {"REGISTER", "UNDO"}
-    address: bpy.props.IntProperty()
+    address: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        address: int
@@ -265,7 +265,7 @@ class RemoveAddress(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_address"
    bl_label = "Remove Address"
    bl_options = {"REGISTER", "UNDO"}
-    address: bpy.props.IntProperty()
+    address: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        address: int
@@ -278,7 +278,7 @@ class EnableEditingOrganisation(bpy.types.Operator):
    bl_idname = "bim.enable_editing_organisation"
    bl_label = "Enable Editing Organisation"
    bl_options = {"REGISTER", "UNDO"}
-    organisation: bpy.props.IntProperty()
+    organisation: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        organisation: int
@@ -320,7 +320,7 @@ class RemoveOrganisation(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_organisation"
    bl_label = "Remove Organisation"
    bl_options = {"REGISTER", "UNDO"}
-    organisation: bpy.props.IntProperty()
+    organisation: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        organisation: int
@@ -333,8 +333,8 @@ class AddPersonAndOrganisation(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_person_and_organisation"
    bl_label = "Add Person And Organisation"
    bl_options = {"REGISTER", "UNDO"}
-    person: bpy.props.IntProperty()
-    organisation: bpy.props.IntProperty()
+    person: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    organisation: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        person: int
@@ -350,7 +350,7 @@ class RemovePersonAndOrganisation(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_person_and_organisation"
    bl_label = "Remove Person And Organisation"
    bl_options = {"REGISTER", "UNDO"}
-    person_and_organisation: bpy.props.IntProperty()
+    person_and_organisation: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        person_and_organisation: int
@@ -365,7 +365,7 @@ class SetUser(bpy.types.Operator):
    bl_idname = "bim.set_user"
    bl_label = "Set User"
    bl_options = {"REGISTER", "UNDO"}
-    user: bpy.props.IntProperty()
+    user: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        user: int
@@ -401,7 +401,7 @@ class EnableEditingActor(bpy.types.Operator):
    bl_idname = "bim.enable_editing_actor"
    bl_label = "Enable Editing Actor"
    bl_options = {"REGISTER", "UNDO"}
-    actor: bpy.props.IntProperty()
+    actor: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        actor: int
@@ -434,7 +434,7 @@ class RemoveActor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.remove_actor"
    bl_label = "Remove Actor"
    bl_options = {"REGISTER", "UNDO"}
-    actor: bpy.props.IntProperty()
+    actor: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        actor: int
@@ -447,7 +447,7 @@ class AssignActor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.assign_actor"
    bl_label = "Assign Actor"
    bl_options = {"REGISTER", "UNDO"}
-    actor: bpy.props.IntProperty()
+    actor: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        actor: int
@@ -462,7 +462,7 @@ class UnassignActor(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.unassign_actor"
    bl_label = "Unassign Actor"
    bl_options = {"REGISTER", "UNDO"}
-    actor: bpy.props.IntProperty()
+    actor: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        actor: int
@@ -481,7 +481,7 @@ class RemoveApplication(bpy.types.Operator, tool.Ifc.Operator):
        "Remove provided IfcApplication."
        "\n\nFor safety will only work on applications without inverses (they are typically marked as '(unused)'."
    )
-    application_id: bpy.props.IntProperty()
+    application_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        application_id: int
@@ -525,7 +525,7 @@ class EnableEditingApplication(bpy.types.Operator):
    bl_idname = "bim.enable_editing_application"
    bl_label = "Enable Editing Application"
    bl_options = {"REGISTER", "UNDO"}
-    application_id: bpy.props.IntProperty()
+    application_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        application_id: int
@@ -15,8 +15,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import datetime
 import json
@@ -63,7 +61,6 @@ import bonsai.core.project as core
 import bonsai.tool as tool
 from bonsai.bim import export_ifc, import_ifc
 from bonsai.bim.ifc import IfcStore
-from bonsai.bim.module.model import preview_base
 from bonsai.bim.module.model.decorator import FaceAreaDecorator, PolylineDecorator
 from bonsai.bim.module.model.polyline import PolylineOperator
 from bonsai.bim.module.project.data import LinksData, ProjectLibraryData
@@ -89,7 +86,9 @@ class NewProject(bpy.types.Operator):
    bl_label = "New Project"
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Start a new IFC project in a fresh session"
-    preset: bpy.props.EnumProperty(items=[(i, i, "") for i in get_args(PresetType)])
+    preset: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+        items=[(i, i, "") for i in get_args(PresetType)]
+    )

    if TYPE_CHECKING:
        preset: PresetType
@@ -179,9 +178,13 @@ class SelectLibraryFile(bpy.types.Operator, IFCFileSelector, ImportHelper):
    bl_description = (
        "Select an IFC file that can be used as a library.\n\nALT+click to reload the current loaded library file."
    )
-    filter_glob: bpy.props.StringProperty(default="*.ifc;*.ifczip;*.ifcxml", options={"HIDDEN"})
-    append_all: bpy.props.BoolProperty(default=False)
-    use_relative_path: bpy.props.BoolProperty(name="Use Relative Path", default=False)
+    filter_glob: bpy.props.StringProperty(
+        default="*.ifc;*.ifczip;*.ifcxml", options={"HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]
+    append_all: bpy.props.BoolProperty(default=False)  # pyright: ignore[reportRedeclaration]
+    use_relative_path: bpy.props.BoolProperty(
+        name="Use Relative Path", default=False
+    )  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        filter_glob: str
@@ -565,7 +568,7 @@ class AppendLibraryElementByQuery(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.append_library_element_by_query"
    bl_label = "Append Library Element By Query"

-    query: bpy.props.StringProperty(name="Query")
+    query: bpy.props.StringProperty(name="Query")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        query: str
@@ -597,9 +600,11 @@ class AppendLibraryElement(bpy.types.Operator, tool.Ifc.Operator):
        "Append element to the current project.\n\n"
        "ALT+CLICK to skip reusing materials, profiles, styles based on their name (may result in duplicates)"
    )
-    definition: bpy.props.IntProperty()
-    prop_index: bpy.props.IntProperty()
-    assume_unique_by_name: bpy.props.BoolProperty(name="Assume Unique By Name", default=True, options={"SKIP_SAVE"})
+    definition: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    prop_index: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    assume_unique_by_name: bpy.props.BoolProperty(
+        name="Assume Unique By Name", default=True, options={"SKIP_SAVE"}
+    )  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        definition: int
@@ -954,24 +959,28 @@ class LoadProject(bpy.types.Operator, IFCFileSelector, ImportHelper):
    bl_label = "Load Project"
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Load an existing IFC project"
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH", options={"SKIP_SAVE"})
-    filter_glob: bpy.props.StringProperty(default="*.ifc;*.ifczip;*.ifcxml;*.ifcsqlite", options={"HIDDEN"})
-    is_advanced: bpy.props.BoolProperty(
+    filepath: bpy.props.StringProperty(
+        subtype="FILE_PATH", options={"SKIP_SAVE"}
+    )  # pyright: ignore[reportRedeclaration]
+    filter_glob: bpy.props.StringProperty(
+        default="*.ifc;*.ifczip;*.ifcxml;*.ifcsqlite", options={"HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]
+    is_advanced: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Enable Advanced Mode",
        description="Load IFC file with advanced settings. Checking this option will skip loading IFC file and will open advanced load settings",
        default=False,
    )
-    use_relative_path: bpy.props.BoolProperty(
+    use_relative_path: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Use Relative Path",
        description="Store the IFC project path relative to the .blend file. Requires .blend file to be saved",
        default=False,
    )
-    should_start_fresh_session: bpy.props.BoolProperty(
+    should_start_fresh_session: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Should Start Fresh Session",
        description="Clear current Blender session before loading IFC. Not supported with 'Use Relative Path' option",
        default=True,
    )
-    import_without_ifc_data: bpy.props.BoolProperty(
+    import_without_ifc_data: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Import Without IFC Data",
        description=(
            "Import IFC objects as Blender objects without any IFC metadata and authoring capabilities."
@@ -979,7 +988,9 @@ class LoadProject(bpy.types.Operator, IFCFileSelector, ImportHelper):
        ),
        default=False,
    )
-    use_detailed_tooltip: bpy.props.BoolProperty(default=False, options={"HIDDEN"})
+    use_detailed_tooltip: bpy.props.BoolProperty(
+        default=False, options={"HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]
    filename_ext = ".ifc"

    if TYPE_CHECKING:
@@ -1289,7 +1300,7 @@ class ToggleFilterCategories(bpy.types.Operator):
    bl_idname = "bim.toggle_filter_categories"
    bl_label = "Toggle Filter Categories"
    bl_options = {"REGISTER", "UNDO"}
-    should_select: bpy.props.BoolProperty(name="Should Select", default=True)
+    should_select: bpy.props.BoolProperty(name="Should Select", default=True)  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        should_select: bool
@@ -1316,7 +1327,7 @@ class LinkIfc(bpy.types.Operator, ImportHelper, tool.Ifc.Operator):
        default=False,
    )
    use_cache: bpy.props.BoolProperty(name="Use Cache", default=True)
-    query: bpy.props.StringProperty(
+    query: bpy.props.StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Query",
        description=(
            "Custom selector query to use to load element from a linked model. E.g. 'IfcElement'.\n\n"
@@ -1393,7 +1404,7 @@ class UnlinkIfc(bpy.types.Operator, tool.Ifc.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Remove the selected file from the link list"

-    link_index: bpy.props.IntProperty(name="Link Index")
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        link_index: int
@@ -1417,7 +1428,7 @@ class UnloadLink(bpy.types.Operator, tool.Ifc.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Unload the selected linked file"

-    link_index: bpy.props.IntProperty(name="Link Index")
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        link_index: int
@@ -1443,9 +1454,9 @@ class LoadLink(bpy.types.Operator, tool.Ifc.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Load the selected file"

-    link_index: bpy.props.IntProperty(name="Link Index")
-    use_cache: bpy.props.BoolProperty(name="Use Cache", default=True)
-    query: bpy.props.StringProperty()
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]
+    use_cache: bpy.props.BoolProperty(name="Use Cache", default=True)  # pyright: ignore[reportRedeclaration]
+    query: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        link_index: int
@@ -1620,7 +1631,7 @@ class ReloadLink(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Reload the selected file"

-    link_index: bpy.props.IntProperty(name="Link Index")
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        link_index: int
@@ -1636,7 +1647,7 @@ class ToggleLinkSelectability(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Toggle selectability"

-    link_index: bpy.props.IntProperty(name="Link Index")
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        link_index: int
@@ -1668,8 +1679,8 @@ class ToggleLinkVisibility(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Toggle visibility between SOLID and WIREFRAME"

-    link_index: bpy.props.IntProperty(name="Link Index")
-    mode: bpy.props.EnumProperty(
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]
+    mode: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        name="Visibility Mode",
        items=((i, i, "") for i in ("WIREFRAME", "VISIBLE")),
    )
@@ -1810,7 +1821,7 @@ class SelectLinkHandle(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Select link empty object handle"

-    link_index: bpy.props.IntProperty(name="Link Index")
+    link_index: bpy.props.IntProperty(name="Link Index")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        link_index: int
@@ -1832,7 +1843,7 @@ class SelectLinkedModelElement(bpy.types.Operator):
    bl_options = {"REGISTER"}
    bl_description = "Select an element in the currently selected linked model by providing GlobalId."

-    guid: bpy.props.StringProperty(name="GlobalId")
+    guid: bpy.props.StringProperty(name="GlobalId")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        guid: str
@@ -1871,11 +1882,21 @@ class ExportIFC(bpy.types.Operator, ExportHelper):
    bl_options = {"REGISTER", "UNDO"}
    filename_ext = ".ifc"
    supported_filexts = (".ifc", ".ifczip", ".ifcjson")
-    filter_glob: bpy.props.StringProperty(default=";".join(f"*{ext}" for ext in supported_filexts), options={"HIDDEN"})
-    json_version: bpy.props.EnumProperty(items=[("4", "4", ""), ("5a", "5a", "")], name="IFC JSON Version")
-    json_compact: bpy.props.BoolProperty(name="Export Compact IFCJSON", default=False)
-    should_save_as: bpy.props.BoolProperty(name="Should Save As", default=False, options={"HIDDEN"})
-    use_relative_path: bpy.props.BoolProperty(name="Use Relative Path", default=False)
+    filter_glob: bpy.props.StringProperty(
+        default=";".join(f"*{ext}" for ext in supported_filexts), options={"HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]
+    json_version: bpy.props.EnumProperty(
+        items=[("4", "4", ""), ("5a", "5a", "")], name="IFC JSON Version"
+    )  # pyright: ignore[reportRedeclaration]
+    json_compact: bpy.props.BoolProperty(
+        name="Export Compact IFCJSON", default=False
+    )  # pyright: ignore[reportRedeclaration]
+    should_save_as: bpy.props.BoolProperty(
+        name="Should Save As", default=False, options={"HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]
+    use_relative_path: bpy.props.BoolProperty(
+        name="Use Relative Path", default=False
+    )  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        filter_glob: str
@@ -1906,11 +1927,11 @@ class ExportIFC(bpy.types.Operator, ExportHelper):

        self.use_relative_path = tool.Project.get_project_props().use_relative_project_path
        props = tool.Blender.get_bim_props()
-        filepath = props.ifc_file
-        if not filepath or self.should_save_as:
-            return ExportHelper.invoke(self, context, event)
-        self.filepath = str(tool.Blender.ensure_blender_path_is_abs(Path(filepath)))
-        return self.execute(context)
+        if (filepath := props.ifc_file) and not self.should_save_as:
+            self.filepath = str(tool.Blender.ensure_blender_path_is_abs(Path(filepath)))
+            return self.execute(context)
+
+        return ExportHelper.invoke(self, context, event)

    def check(self, context):
        # ExportHelper is automatically adjusting suffix to `filename_ext`.
@@ -1936,20 +1957,6 @@ class ExportIFC(bpy.types.Operator, ExportHelper):
        return {"FINISHED"}

    def _execute(self, context):
-        committed, failed_commits = tool.Parametric.commit_pending_edits()
-        # Previews are session-transient — discard rather than commit. Sibling
-        # gizmo polls gate on each preview's is_active flag, and a stuck flag
-        # persisted through the save would silently hide them on reload.
-        preview_base.discard_pending_previews(context.scene)
-        # Suffix is appended to the IFC save-success report below so the auto-commit
-        # info isn't immediately overwritten by the success message in Blender's
-        # status bar (only the latest self.report({"INFO"}, ...) sticks).
-        commit_suffix = f" (auto-committed {committed} pending parametric edit(s))" if committed else ""
-        if failed_commits:
-            names = ", ".join(o.name for o in failed_commits)
-            msg = f"Auto-commit failed for {len(failed_commits)} object(s): {names}"
-            print(f"Bonsai: {msg} (their drafts are NOT saved to the IFC file).")
-            self.report({"ERROR"}, msg)
        start = time.time()
        logger = logging.getLogger("ExportIFC")
        path_log = tool.Blender.get_data_dir_path("process.log")
@@ -2018,7 +2025,7 @@ class ExportIFC(bpy.types.Operator, ExportHelper):
                    blendmetadata_path = output_file + suffix
                self.report(
                    {"INFO"},
-                    f'IFC Project "{os.path.basename(output_file)}" And Metadata File Saved to: {os.path.basename(blendmetadata_path)}{commit_suffix}',
+                    f'IFC Project "{os.path.basename(output_file)}" And Metadata File Saved to: {os.path.basename(blendmetadata_path)}',
                )
            except Exception as e:
                self.report({"ERROR"}, f"Failed to save blend metadata file: {e}")
@@ -2028,7 +2035,7 @@ class ExportIFC(bpy.types.Operator, ExportHelper):
                bpy.ops.wm.save_mainfile(filepath=bpy.data.filepath)
            self.report(
                {"INFO"},
-                f'IFC Project "{os.path.basename(output_file)}" {"" if not save_blend_file else "And Current Blend File Are"} Saved{commit_suffix}',
+                f'IFC Project "{os.path.basename(output_file)}" {"" if not save_blend_file else "And Current Blend File Are"} Saved',
            )

        bonsai.bim.handler.refresh_ui_data()
@@ -2046,7 +2053,7 @@ class LoadLinkedProject(bpy.types.Operator, ImportHelper):
    bl_description = "Operator is used to load a project .cache.blend to then link it to the IFC file."
    bl_options = {"REGISTER", "UNDO"}

-    query: bpy.props.StringProperty()
+    query: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
    """See ``bim.link_ifc``."""

    if TYPE_CHECKING:
@@ -2436,8 +2443,8 @@ class HideQueriedLinkedElement(bpy.types.Operator):
    )
    bl_options = {"REGISTER", "UNDO"}

-    unhide_all: bpy.props.BoolProperty(options={"SKIP_SAVE"})
-    hide_all_except: bpy.props.BoolProperty(options={"SKIP_SAVE"})
+    unhide_all: bpy.props.BoolProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]
+    hide_all_except: bpy.props.BoolProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        unhide_all: bool
@@ -2911,8 +2918,12 @@ class IFCFileHandlerOperator(bpy.types.Operator):
    bl_label = "Import .ifc file"
    bl_options = {"REGISTER", "UNDO", "INTERNAL"}

-    directory: bpy.props.StringProperty(subtype="FILE_PATH", options={"SKIP_SAVE", "HIDDEN"})
-    files: bpy.props.CollectionProperty(type=bpy.types.OperatorFileListElement, options={"SKIP_SAVE", "HIDDEN"})
+    directory: bpy.props.StringProperty(
+        subtype="FILE_PATH", options={"SKIP_SAVE", "HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]
+    files: bpy.props.CollectionProperty(
+        type=bpy.types.OperatorFileListElement, options={"SKIP_SAVE", "HIDDEN"}
+    )  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        directory: str
@@ -2967,7 +2978,7 @@ class MeasureTool(bpy.types.Operator, PolylineOperator):
    bl_label = "Measure Tool"
    bl_options = {"REGISTER", "UNDO"}

-    measure_type: bpy.props.StringProperty()
+    measure_type: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        measure_type: str
@@ -3066,7 +3077,7 @@ class MeasureFaceAreaTool(bpy.types.Operator, PolylineOperator):
    bl_label = "Measure Face Area Tool"
    bl_options = {"REGISTER", "UNDO"}

-    measure_type: bpy.props.StringProperty()
+    measure_type: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        measure_type: str
@@ -3368,7 +3379,7 @@ class LoadBlendMetadataAndIFC(bpy.types.Operator):
    bl_idname = "bim.load_blend_metadata_and_ifc"
    bl_label = "Load Blend Metadata and IFC"
    bl_options = {"REGISTER", "UNDO"}
-    filepath: bpy.props.StringProperty(name="IFC File Path", default="")
+    filepath: bpy.props.StringProperty(name="IFC File Path", default="")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        filepath: str
@@ -345,7 +345,7 @@ class BIMProjectProperties(PropertyGroup):
        ),
        default=False,
    )
-    should_cache: BoolProperty(
+    should_cache: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Cache",
        description=(
            "Cache loaded geometry to .h5 file in your cache directory (see in preferences) "
@@ -240,7 +240,7 @@ class CopyPropertyToSelection(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Copy Property To Selection"
    bl_options = {"REGISTER", "UNDO"}

-    name: bpy.props.StringProperty()
+    name: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        name: str
@@ -280,10 +280,10 @@ class BIM_OT_add_property_to_edit(bpy.types.Operator):
    bl_label = "Add Property to Edit"
    bl_idname = "bim.add_property_to_edit"
    bl_options = {"REGISTER", "UNDO"}
-    option: bpy.props.EnumProperty(
+    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[(t, t, "") for t in tool.Pset.BULK_OPERATION_TYPES],
    )
-    index: bpy.props.IntProperty(default=-1)
+    index: bpy.props.IntProperty(default=-1)  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        option: tool.Pset.BulkOperationType
@@ -307,9 +307,9 @@ class BIM_OT_remove_property_to_edit(bpy.types.Operator):
    bl_label = "Remove Property from Editing"
    bl_idname = "bim.remove_property_to_edit"
    bl_options = {"REGISTER", "UNDO"}
-    index: bpy.props.IntProperty()
-    index2: bpy.props.IntProperty(default=-1)
-    option: bpy.props.EnumProperty(
+    index: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    index2: bpy.props.IntProperty(default=-1)  # pyright: ignore[reportRedeclaration]
+    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[(t, t, "") for t in tool.Pset.BULK_OPERATION_TYPES],
    )

@@ -336,7 +336,7 @@ class BIM_OT_bulk_edit_clear_list(bpy.types.Operator):
    bl_label = "Clear List of Properties"
    bl_idname = "bim.pset_bulk_edit_clear_list"
    bl_options = {"REGISTER", "UNDO"}
-    option: bpy.props.EnumProperty(
+    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[(t, t, "") for t in tool.Pset.BULK_OPERATION_TYPES],
    )

@@ -368,9 +368,9 @@ class GlobalPsetProperties(PropertyGroup):
    qto_filter: StringProperty(name="Qto Filter", options={"TEXTEDIT_UPDATE"})

    # Bulk operations.
-    psets_to_delete: CollectionProperty(type=DeletePsetEntry)
-    psets_to_rename: CollectionProperty(type=RenamePropertyEntry)
-    psets_to_add_edit: CollectionProperty(type=AddEditPropertyEntry)
+    psets_to_delete: CollectionProperty(type=DeletePsetEntry)  # pyright: ignore[reportRedeclaration]
+    psets_to_rename: CollectionProperty(type=RenamePropertyEntry)  # pyright: ignore[reportRedeclaration]
+    psets_to_add_edit: CollectionProperty(type=AddEditPropertyEntry)  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        pset_filter: str
@@ -799,7 +799,7 @@ class SelectQueryElements(Operator):
    bl_description = "Select elements matching an provided selector query"
    bl_options = {"REGISTER", "UNDO"}

-    query: StringProperty(name="Query")
+    query: StringProperty(name="Query")  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        query: str
@@ -829,12 +829,12 @@ class SaveSearch(Operator, tool.Ifc.Operator):
        # Extra item so it will be easy to select current text.
        return [text] + SaveSearch.name_search_items

-    name: StringProperty(
+    name: StringProperty(  # pyright: ignore[reportRedeclaration]
        name="Name",
        search=get_name_search_items,
        search_options={"SORT"},
    )
-    module: StringProperty()
+    module: StringProperty()  # pyright: ignore[reportRedeclaration]

    def update_use_all_ifcgroups(self, context: object = None) -> None:
        ifc_file = tool.Ifc.get()
@@ -845,7 +845,7 @@ class SaveSearch(Operator, tool.Ifc.Operator):
        }
        self.name_search_items[:] = natsorted(groups)

-    use_all_ifcgroups: BoolProperty(
+    use_all_ifcgroups: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Use Any IfcGroup",
        description=(
            "By default we're targeting only IfcGroups with SEARCH ObjectType "
@@ -106,7 +106,7 @@ class ActivateStatusFilters(bpy.types.Operator):
    bl_description = "Filter and display objects based on currently selected IFC statuses"
    bl_options = {"REGISTER", "UNDO"}

-    only_if_enabled: bpy.props.BoolProperty(
+    only_if_enabled: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Only If Filters are Enabled",
        description="Activate status filters only in case if they were enabled from the UI before.",
        default=False,
@@ -137,7 +137,7 @@ class SelectStatusFilter(bpy.types.Operator):
    bl_description = "Select elements with currently selected status"
    bl_options = {"REGISTER", "UNDO"}

-    status: bpy.props.StringProperty()
+    status: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        status: tool.Sequence.ElementStatusUI
@@ -156,7 +156,7 @@ class AssignStatus(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Assign status to the selected elements.\n\nAlt+CLICK to unassign the status."
    bl_options = {"REGISTER", "UNDO"}

-    should_override_previous_status: bpy.props.BoolProperty(
+    should_override_previous_status: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Override Previous Status",
        description=(
            "Whether assigning new status should override previous one.\n\n"
@@ -165,8 +165,8 @@ class AssignStatus(bpy.types.Operator, tool.Ifc.Operator):
        ),
        default=True,
    )
-    status: bpy.props.StringProperty()
-    should_unassign_status: bpy.props.BoolProperty(
+    status: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    should_unassign_status: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        options={"SKIP_SAVE"},
    )

@@ -415,7 +415,7 @@ class CopyWorkSchedule(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Copy Work Schedule"
    bl_description = "Create a duplicate of the provided work schedule."
    bl_options = {"REGISTER", "UNDO"}
-    work_schedule: bpy.props.IntProperty()
+    work_schedule: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        work_schedule: int
@@ -412,7 +412,7 @@ WorkPlanEditingType = Literal["-", "ATTRIBUTES", "SCHEDULES", "WORK_SCHEDULE", "

 class BIMWorkPlanProperties(PropertyGroup):
    work_plan_attributes: CollectionProperty(name="Work Plan Attributes", type=Attribute)
-    editing_type: EnumProperty(
+    editing_type: EnumProperty(  # pyright: ignore[reportRedeclaration]
        items=[(i, i, "") for i in get_args(WorkPlanEditingType)],
    )
    work_plans: CollectionProperty(name="Work Plans", type=WorkPlan)
@@ -430,8 +430,8 @@ class BIMWorkPlanProperties(PropertyGroup):


 class IFCStatus(PropertyGroup):
-    name: StringProperty()
-    is_visible: BoolProperty(
+    name: StringProperty()  # pyright: ignore[reportRedeclaration]
+    is_visible: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Is Visible", default=True, update=lambda x, y: (None, bpy.ops.bim.activate_status_filters())[0]
    )

@@ -220,7 +220,7 @@ class CopyToContainer(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Copy to Container"
    bl_options = {"REGISTER", "UNDO"}

-    container: bpy.props.IntProperty()
+    container: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        container: int
@@ -302,15 +302,6 @@ class SelectSimilarContainer(bpy.types.Operator):
            is_recursive=self.is_recursive,
        )
        self.is_recursive = True  # <-- forcibly reset
-
-        element = tool.Ifc.get_entity(context.active_object)
-        if element:
-            container = tool.Spatial.get_container(element)
-            if container:
-                result = f'location="{container.Name}"'
-                bpy.context.window_manager.clipboard = result
-                self.report({"INFO"}, f"({result}) was copied to the clipboard.")
-
        return {"FINISHED"}


@@ -167,7 +167,7 @@ class EnableEditingStructuralBoundaryCondition(bpy.types.Operator):
    bl_idname = "bim.enable_editing_structural_boundary_condition"
    bl_label = "Enable Editing Structural Boundary Condition"
    bl_options = {"REGISTER", "UNDO"}
-    boundary_condition: bpy.props.IntProperty()
+    boundary_condition: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        boundary_condition: int
@@ -186,7 +186,7 @@ class EditStructuralBoundaryCondition(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.edit_structural_boundary_condition"
    bl_label = "Edit Structural Boundary Condition"
    bl_options = {"REGISTER", "UNDO"}
-    connection: bpy.props.IntProperty()
+    connection: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        connection: int
@@ -917,7 +917,7 @@ class EnableEditingBoundaryCondition(bpy.types.Operator):
    bl_idname = "bim.enable_editing_boundary_condition"
    bl_label = "Enable Editing Boundary Condition"
    bl_options = {"REGISTER", "UNDO"}
-    boundary_condition: bpy.props.IntProperty()
+    boundary_condition: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        boundary_condition: int
@@ -83,7 +83,7 @@ class DecorationShader:
        PARALLEL DISTRIBUTED FORCE,
        DISTRIBUTED MOMENT,
        """
-        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")
+        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")  # ty:ignore[too-many-positional-arguments]
        vert_out.smooth("VEC3", "forces")
        vert_out.smooth("VEC3", "co")

@@ -203,7 +203,7 @@ class DecorationShader:
        """param: pattern: type of pattern
        SINGLE FORCE,
        SINGLE MOMENT"""
-        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")
+        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")  # ty: ignore[too-many-positional-arguments]
        vert_out.smooth("VEC3", "co")

        shader_info = gpu.types.GPUShaderCreateInfo()
@@ -253,7 +253,7 @@ class DecorationShader:

    def get_planar_shader(self) -> gpu.types.GPUShader:
        """shader for planar loads"""
-        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")
+        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")  # ty: ignore[too-many-positional-arguments]
        vert_out.smooth("VEC3", "co")

        shader_info = gpu.types.GPUShaderCreateInfo()
@@ -118,19 +118,6 @@ def update_shader_graph(self: Union["Texture", "BIMStylesProperties"], context:
    tool.Loader.create_surface_style_with_textures(material, shading_data, textures_data)


-def _make_clear_null_updater(null_prop: str):
-    def _update(self: "BIMStylesProperties", context: bpy.types.Context) -> None:
-        self[null_prop] = False
-        update_shader_graph(self, context)
-
-    return _update
-
-
-update_diffuse_colour = _make_clear_null_updater("is_diffuse_colour_null")
-update_specular_colour = _make_clear_null_updater("is_specular_colour_null")
-update_specular_highlight_value = _make_clear_null_updater("is_specular_highlight_null")
-
-
 UV_MODES = [
    ("UV", "UV", _("Actual UV data presented on the geometry")),
    ("Generated", "Generated", _("Automatically-generated UV from the vertex positions of the mesh")),
@@ -234,29 +221,24 @@ class BIMStylesProperties(PropertyGroup):
    transparency: bpy.props.FloatProperty(
        name="Transparency", default=0.0, min=0.0, max=1.0, update=update_shader_graph
    )
-    is_diffuse_colour_null: BoolProperty(name="Is Null", update=update_shader_graph)
+    # TODO: do something on null?
+    is_diffuse_colour_null: BoolProperty(name="Is Null")
    diffuse_colour_class: EnumProperty(
        items=[(x, x, "") for x in get_args(ColourClass)],
        name="Diffuse Colour Class",
-        update=update_diffuse_colour,
+        update=update_shader_graph,
    )
    diffuse_colour: bpy.props.FloatVectorProperty(
-        name="Diffuse Colour",
-        subtype="COLOR",
-        default=(1, 1, 1),
-        min=0.0,
-        max=1.0,
-        size=3,
-        update=update_diffuse_colour,
+        name="Diffuse Colour", subtype="COLOR", default=(1, 1, 1), min=0.0, max=1.0, size=3, update=update_shader_graph
    )
    diffuse_colour_ratio: bpy.props.FloatProperty(
-        name="Diffuse Ratio", default=0.0, min=0.0, max=1.0, update=update_diffuse_colour
+        name="Diffuse Ratio", default=0.0, min=0.0, max=1.0, update=update_shader_graph
    )
-    is_specular_colour_null: BoolProperty(name="Is Null", update=update_shader_graph)
+    is_specular_colour_null: BoolProperty(name="Is Null")
    specular_colour_class: EnumProperty(
        items=[(x, x, "") for x in get_args(ColourClass)],
        name="Specular Colour Class",
-        update=update_specular_colour,
+        update=update_shader_graph,
        default="IfcNormalisedRatioMeasure",
    )
    specular_colour: bpy.props.FloatVectorProperty(
@@ -266,7 +248,7 @@ class BIMStylesProperties(PropertyGroup):
        min=0.0,
        max=1.0,
        size=3,
-        update=update_specular_colour,
+        update=update_shader_graph,
    )
    specular_colour_ratio: bpy.props.FloatProperty(
        name="Specular Ratio",
@@ -274,16 +256,16 @@ class BIMStylesProperties(PropertyGroup):
        default=0.0,
        min=0.0,
        max=1.0,
-        update=update_specular_colour,
+        update=update_shader_graph,
    )
-    is_specular_highlight_null: BoolProperty(name="Is Null", update=update_shader_graph)
+    is_specular_highlight_null: BoolProperty(name="Is Null")
    specular_highlight: bpy.props.FloatProperty(
        name="Specular Highlight",
        description="Used as Roughness value in PHYSICAL Reflectance Method",
        default=0.0,
        min=0.0,
        max=1.0,
-        update=update_specular_highlight_value,
+        update=update_shader_graph,
    )
    reflectance_method: EnumProperty(
        name="Reflectance Method",
@@ -54,7 +54,7 @@ class AddSystem(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Add System"
    bl_options = {"REGISTER", "UNDO"}

-    parent_system_id: bpy.props.IntProperty()
+    parent_system_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        parent_system_id: int
@@ -151,8 +151,7 @@ class BIM_PT_type_attributes(Panel):
                row = layout.row(align=True)
                row.label(text=attribute["name"])
                value = get_display_value(attribute["value"])
-                op = row.operator("bim.select_similar", text=value, icon="NONE", emboss=False)
-                op.key = "type." + attribute["name"]
+                row.label(text=value)


 def add_object_button(self, context):
@@ -26,16 +26,16 @@ from bpy.types import PropertyGroup


 class WebProperties(PropertyGroup):
-    webserver_port: IntProperty(
+    webserver_port: IntProperty(  # pyright: ignore[reportRedeclaration]
        name="Webserver Port",
        min=0,
        max=65535,
    )
-    is_running: BoolProperty(
+    is_running: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Webserver Running Status",
        default=False,
    )
-    is_connected: BoolProperty(
+    is_connected: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Connection Status",
        default=False,
    )
@@ -159,9 +159,9 @@ class SelectURIAttribute(bpy.types.Operator, ImportHelper):
    bl_label = "Select URI Attribute"
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Select a local file"
-    attribute_data_path: bpy.props.StringProperty(name="Data Path")
+    attribute_data_path: bpy.props.StringProperty(name="Data Path")  # pyright: ignore[reportRedeclaration]
    """Full data path to `Attribute`/string property."""
-    use_relative_path: bpy.props.BoolProperty(
+    use_relative_path: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Use Relative Path",
        default=False,
    )
@@ -601,7 +601,7 @@ class CreateMacBonsaiApp(bpy.types.Operator):
        "ALT+click to uninstall Bonsai app if it was installed previously."
    )

-    uninstall: bpy.props.BoolProperty(options={"SKIP_SAVE"})
+    uninstall: bpy.props.BoolProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        uninstall: bool
@@ -1667,7 +1667,7 @@ class BIM_OT_attribute_add_subitem(bpy.types.Operator):
    bl_description = "Add subitem to the current attribute"
    bl_options = {"REGISTER", "UNDO"}

-    data_path: bpy.props.StringProperty()
+    data_path: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
    """Full data path."""

    if TYPE_CHECKING:
@@ -1691,9 +1691,9 @@ class BIM_OT_attribute_remove_subitem(bpy.types.Operator):
    bl_description = "Add subitem to the current attribute"
    bl_options = {"REGISTER", "UNDO"}

-    data_path: bpy.props.StringProperty()
+    data_path: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
    """Full data path."""
-    index: bpy.props.IntProperty()
+    index: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]

    if TYPE_CHECKING:
        data_path: str
@@ -1,611 +0,0 @@
-# Bonsai - OpenBIM Blender Add-on
-# Copyright (C) 2026
-#
-# This file is part of Bonsai.
-#
-# Bonsai is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Bonsai is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was generated with the assistance of an AI coding tool.
-
-"""Shared operator mixins for parametric-edit operators.
-
-Edit-lifecycle mixins (Enable / Finish / Cancel):
-    `FeatureModifierEditMixin` — door, window (BBIM_<Type> pset; nested
-        lining/panel properties; Finish + Cancel route through
-        ``ifcopenshell.api.feature``).
-    `PathPreservingEditMixin` — railing, roof (path_data preserved across
-        edit; only general kwargs are user-editable).
-
-Pattern selection (which approach a new feature should adopt):
-    Every parametric edit lifecycle commits to one of three patterns. Pick by
-    answering "does the feature share the Enable→Finish→Cancel shape that
-    one of the existing mixins already encodes?":
-
-    A. Inherit one of the shared mixins below and route through
-       `tool.Parametric.build_edit_lifecycle`:
-
-       - `FeatureModifierEditMixin` when the feature stores its pset as
-         `{general fields} + {lining_properties: {...}} + {panel_properties: {...}}`
-         and Finish must call a per-type `update_<type>_modifier_representation`.
-
-       - `PathPreservingEditMixin` when the feature's pset carries a
-         `path_data` field that survives general-kwarg edits untouched, with
-         a separate Enable/Finish/Cancel lifecycle for path editing itself.
-
-    B. Write a per-feature mixin that subclasses `ParametricEditMixinBase`
-       and provides `_enable_targets` / `_finish_targets` / `_cancel_targets`,
-       then route through `build_edit_lifecycle`. Pick this when the
-       feature's pset roundtrip or representation handling diverges from the
-       shared mixins but the Enable→Finish→Cancel shape still fits.
-
-    C. Declare standalone Enable/Finish/Cancel Operator subclasses (no
-       factory) when the feature's parameter-change logic is sufficiently
-       unique that even a per-feature mixin would force optional hooks or
-       dead branches. Such operators MUST call the matrix_world drift
-       helpers (`tool.Geometry.commit_placement_if_moved` on Enable/Finish,
-       `tool.Geometry.restore_or_rebaseline_placement` on Cancel) — the
-       drift contract is enforced uniformly regardless of which pattern the
-       operators adopt.
-
-    The authoritative list of registered parametric types — and which use
-    `build_edit_lifecycle` vs. standalone operators — lives in
-    `tool/parametric.py`'s `EDIT_TYPES` and is enforced by the registry
-    contract tests in `test/bim/test_parametric_registry.py`.
-
-This module hosts operator-side mixins that import ``bonsai.tool`` freely.
-The lightweight parametric registry consumed at addon-enable time must stay
-free of such imports and lives separately in ``tool/parametric.py``."""
-
-from __future__ import annotations
-
-import json
-from collections.abc import Callable
-from typing import ClassVar, get_args
-
-import bpy
-import ifcopenshell.util.element
-from bpy.app.handlers import persistent
-from ifcopenshell import entity_instance
-
-import bonsai.core.geometry
-import bonsai.tool as tool
-
-
-class ParametricEditMixinBase:
-    """Common scaffolding for parametric edit-lifecycle mixins.
-
-    Each per-type subclass provides four hooks:
-
-        ``pset_name``: BBIM_<Type> pset identifier
-        ``_is_element_type(element)``: IFC element predicate
-        ``_get_props(obj)``: PropertyGroup accessor
-        ``_iter_targets(context)``: list of objects to act on (default: ``[active_object]``)
-
-    Drift handling is built in: pre-edit matrix_world drift commits to IFC on
-    Enable, in-edit drag commits on Finish, and Cancel restores the committed
-    IFC placement. This prevents an uncommitted drag from disappearing on
-    Finish or snapping back on Cancel.
-
-    Operator subclasses call one of ``_enable_targets`` / ``_finish_targets`` /
-    ``_cancel_targets`` from their ``_execute`` method."""
-
-    pset_name: ClassVar[str]
-
-    @classmethod
-    def _iter_targets(cls, context: bpy.types.Context) -> list[bpy.types.Object]:
-        obj = context.active_object
-        return [obj] if obj else []
-
-    @classmethod
-    def _is_element_type(cls, element: entity_instance) -> bool:
-        raise NotImplementedError
-
-    @classmethod
-    def _get_props(cls, obj: bpy.types.Object):
-        raise NotImplementedError
-
-    @classmethod
-    def _resolve(cls, obj: bpy.types.Object):
-        """Look up ``(element, props)`` for ``obj`` if it matches this type, else None.
-
-        Common predicate guard for every lifecycle method — collapses the
-        ``element = tool.Ifc.get_entity(obj); assert element; if not is_<type>(element): return``
-        triplet into one call."""
-        element = tool.Ifc.get_entity(obj)
-        if not element or not cls._is_element_type(element):
-            return None
-        return element, cls._get_props(obj)
-
-    @classmethod
-    def _handle_drift_on_enable(cls, obj: bpy.types.Object) -> None:
-        tool.Geometry.commit_placement_if_moved(obj, apply_scale=False)
-
-    @classmethod
-    def _handle_drift_on_finish(cls, obj: bpy.types.Object) -> None:
-        tool.Geometry.commit_placement_if_moved(obj)
-
-    @classmethod
-    def _handle_drift_on_cancel(cls, obj: bpy.types.Object, element: entity_instance) -> None:
-        tool.Geometry.restore_or_rebaseline_placement(obj, element)
-
-    @classmethod
-    def _mark_type_thumbnail_dirty(cls, element: entity_instance) -> None:
-        """Mark the element's type's preview thumbnail for refresh so the
-        property-panel preview reflects post-edit geometry. No-op for
-        occurrences without a backing type."""
-        element_type = ifcopenshell.util.element.get_type(element)
-        if element_type:
-            tool.Model.mark_thumbnail_for_update(element_type)
-
-
-class FeatureModifierEditMixin(ParametricEditMixinBase):
-    """Lifecycle for door- and window-style parametric modifier operators.
-
-    Enable:
-        Read BBIM_<Type> pset JSON → unwrap ``lining_properties`` and
-        ``panel_properties`` → merge constituents data → set draft props →
-        ``is_editing = True``.
-
-    Finish:
-        Gather ``general / lining / panel`` kwargs (project units) → nest →
-        ``is_editing = False`` → call ``_update_modifier_representation`` →
-        mark thumbnail → write back to BBIM_<Type> pset via
-        ``ifcopenshell.api.pset.edit_pset``.
-
-    Cancel:
-        Read BBIM_<Type> pset JSON → unwrap → restore draft props →
-        ``switch_representation`` to the Body representation →
-        ``is_editing = False``."""
-
-    @classmethod
-    def _update_modifier_representation(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        """Hook: call the per-type ``update_<type>_modifier_representation``."""
-        raise NotImplementedError
-
-    @classmethod
-    def _enable_one(cls, obj: bpy.types.Object) -> None:
-        resolved = cls._resolve(obj)
-        if resolved is None:
-            return
-        element, props = resolved
-        cls._handle_drift_on_enable(obj)
-        data = json.loads(ifcopenshell.util.element.get_pset(element, cls.pset_name, "Data"))
-        data.update(data.pop("lining_properties"))
-        data.update(data.pop("panel_properties"))
-        data.update(tool.Model.get_constituents_props_data(element))
-        # required since the pset can be loaded from .ifc and the PropertyGroup
-        # would otherwise still hold its default values
-        props.set_props_kwargs_from_ifc_data(data)
-        props.is_editing = True
-
-    @classmethod
-    def _finish_one(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        resolved = cls._resolve(obj)
-        if resolved is None:
-            return
-        element, props = resolved
-        data = props.get_general_kwargs(convert_to_project_units=True)
-        data["lining_properties"] = props.get_lining_kwargs(convert_to_project_units=True)
-        data["panel_properties"] = props.get_panel_kwargs(convert_to_project_units=True)
-        cls._update_modifier_representation(obj, context)
-        cls._mark_type_thumbnail_dirty(element)
-        tool.Pset.write_bbim_data(element, cls.pset_name, data)
-        cls._handle_drift_on_finish(obj)
-        # Set only on success: if any IFC op above raised, the user's draft survives for retry.
-        props.is_editing = False
-
-    @classmethod
-    def _cancel_one(cls, obj: bpy.types.Object) -> None:
-        resolved = cls._resolve(obj)
-        if resolved is None:
-            return
-        element, props = resolved
-        # Cancel must always clear is_editing — leaving it True after a
-        # restore-failure would block the user from re-entering edit mode and
-        # the next save's stale-flag heal would silently roll back the
-        # cancellation. Wrap the restore in try/finally so the flag flips
-        # even on partial failure.
-        try:
-            data = json.loads(ifcopenshell.util.element.get_pset(element, cls.pset_name, "Data"))
-            data.update(data.pop("lining_properties"))
-            data.update(data.pop("panel_properties"))
-            props.set_props_kwargs_from_ifc_data(data)
-            body = tool.Geometry.get_body_representation(element)
-            bonsai.core.geometry.switch_representation(tool.Ifc, tool.Geometry, obj=obj, representation=body)
-            cls._handle_drift_on_cancel(obj, element)
-        finally:
-            props.is_editing = False
-
-    def _enable_targets(self, context: bpy.types.Context) -> set[str]:
-        for obj in self._iter_targets(context):
-            self._enable_one(obj)
-        return {"FINISHED"}
-
-    def _finish_targets(self, context: bpy.types.Context) -> set[str]:
-        for obj in self._iter_targets(context):
-            self._finish_one(obj, context)
-        return {"FINISHED"}
-
-    def _cancel_targets(self, context: bpy.types.Context) -> set[str]:
-        for obj in self._iter_targets(context):
-            self._cancel_one(obj)
-        return {"FINISHED"}
-
-
-class PathPreservingEditMixin(ParametricEditMixinBase):
-    """Lifecycle for railing- and roof-style parametric modifier operators.
-
-    Distinctive: ``path_data`` is part of the BBIM_<Type> pset but is **not**
-    user-editable through this lifecycle — it survives the edit untouched, only
-    general kwargs are diffed. (Path editing has its own separate operator
-    pair, ``Enable/Finish/CancelEditing<Type>Path``, out of scope here.)
-
-    Enable:
-        Fetch pset data via ``tool.Model.get_modeling_bbim_pset_data`` → set
-        draft props → ``is_editing = True``. The subclass post-load hook
-        can reshape the dict to fit the PropertyGroup's storage layout
-        (e.g., pre-serialise a structured pset value to JSON for a
-        ``StringProperty`` field).
-
-    Finish:
-        Read fresh pset → keep ``path_data`` → gather ``general`` kwargs
-        (project units) → reassemble → ``is_editing = False`` → call
-        ``_update_pset`` (per-type pset writer) → call ``_update_modifier_ifc_data``
-        (per-type geometry commit).
-
-    Cancel:
-        Read fresh pset → restore draft props → call
-        ``_restore_viewport_after_cancel`` (per-type viewport restore — typically
-        rebuilds the bmesh preview, but subclasses may load a different
-        representation entirely) → ``is_editing = False``."""
-
-    @classmethod
-    def _post_load_data(cls, data: dict) -> dict:
-        """Hook: optionally transform the pset data dict after loading and before
-        passing to ``set_props_kwargs_from_ifc_data``. Default: pass-through.
-
-        Override when the PropertyGroup stores a structured pset field as a
-        serialised primitive — e.g., a list/dict value mapped onto a
-        ``StringProperty`` requires JSON-encoding here."""
-        return data
-
-    @classmethod
-    def _update_pset(cls, element: entity_instance, data: dict) -> None:
-        """Hook: per-type pset writer (``update_bbim_<type>_pset``)."""
-        raise NotImplementedError
-
-    @classmethod
-    def _update_modifier_ifc_data(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        """Hook: per-type ``update_<type>_modifier_ifc_data`` — commits the
-        modified geometry to IFC. Signature accepts ``(obj, context)`` so
-        subclasses can forward either argument to their existing helper."""
-        raise NotImplementedError
-
-    @classmethod
-    def _restore_viewport_after_cancel(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        """Hook: restore the viewport mesh to match the just-restored draft props.
-
-        Most subclasses rebuild a bmesh preview from props. Subclasses whose
-        committed IFC representation diverges from the preview may switch
-        the mesh back to the committed representation instead."""
-        raise NotImplementedError
-
-    @classmethod
-    def _enable_one(cls, obj: bpy.types.Object) -> None:
-        resolved = cls._resolve(obj)
-        if resolved is None:
-            return
-        _element, props = resolved
-        cls._handle_drift_on_enable(obj)
-        data = tool.Model.get_modeling_bbim_pset_data(obj, cls.pset_name)["data_dict"]
-        data = cls._post_load_data(data)
-        props.set_props_kwargs_from_ifc_data(data)
-        props.is_editing = True
-
-    @classmethod
-    def _finish_one(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        resolved = cls._resolve(obj)
-        if resolved is None:
-            return
-        element, props = resolved
-        pset_data = tool.Model.get_modeling_bbim_pset_data(obj, cls.pset_name)
-        stored = pset_data["data_dict"]
-        data = props.get_general_kwargs(convert_to_project_units=True)
-        data["path_data"] = stored["path_data"]
-        # Skip the pset commit when the draft is identical to the stored pset:
-        # an Enable → Finish-without-changes cycle should not pollute the
-        # representation list or burn an undo entry. Drift commit still runs
-        # unconditionally — matrix_world drift is independent of pset content.
-        if data != stored:
-            cls._update_pset(element, data)
-            cls._update_modifier_ifc_data(obj, context)
-            cls._mark_type_thumbnail_dirty(element)
-        cls._handle_drift_on_finish(obj)
-        # Set only on success: if any IFC op above raised, the user's draft survives for retry.
-        props.is_editing = False
-
-    @classmethod
-    def _cancel_one(cls, obj: bpy.types.Object, context: bpy.types.Context) -> None:
-        resolved = cls._resolve(obj)
-        if resolved is None:
-            return
-        element, props = resolved
-        try:
-            pset_data = tool.Model.get_modeling_bbim_pset_data(obj, cls.pset_name)
-            stored = pset_data["data_dict"]
-            draft = props.get_general_kwargs(convert_to_project_units=True)
-            draft["path_data"] = stored["path_data"]
-            nothing_changed = draft == stored
-            data = cls._post_load_data(stored)
-            props.set_props_kwargs_from_ifc_data(data)
-            # Skip the viewport rebuild on a no-op cancel: the mesh on screen is
-            # still the committed representation, and the per-type viewport-restore
-            # hook may be expensive (some subclasses reload a high-poly IFC
-            # representation rather than rebuild a preview mesh).
-            if not nothing_changed:
-                cls._restore_viewport_after_cancel(obj, context)
-            cls._handle_drift_on_cancel(obj, element)
-        finally:
-            # Always clear the flag — see ``FeatureModifierEditMixin._cancel_one``
-            # for the rationale.
-            props.is_editing = False
-
-    def _enable_targets(self, context: bpy.types.Context) -> set[str]:
-        for obj in self._iter_targets(context):
-            self._enable_one(obj)
-        return {"FINISHED"}
-
-    def _finish_targets(self, context: bpy.types.Context) -> set[str]:
-        for obj in self._iter_targets(context):
-            self._finish_one(obj, context)
-        return {"FINISHED"}
-
-    def _cancel_targets(self, context: bpy.types.Context) -> set[str]:
-        for obj in self._iter_targets(context):
-            self._cancel_one(obj, context)
-        return {"FINISHED"}
-
-
-# --- Type-selection mixins (Cycle / Pick) ------------------------------------
-
-
-class TypeAccessorBase:
-    """Shared contract for operators that resolve and write a Literal type
-    attribute on a Bonsai PropertyGroup.
-
-    Subclasses define ``element_checker``, ``props_getter``, ``type_literal``,
-    ``type_attr``; ``skip_element_check`` bypasses element validation. Concrete
-    subclasses (``CycleTypeMixin``, ``PickTypeMixin``) add the interaction
-    shape on top.
-
-    Test doubles must be set on the operator instance — the predicates are
-    bound at class-definition time, so patching the underlying tool module
-    has no effect."""
-
-    element_checker: Callable[[entity_instance], bool]
-    props_getter: Callable[[bpy.types.Object], bpy.types.PropertyGroup]
-    type_literal: type
-    type_attr: str
-    skip_element_check: bool = False
-
-    def _resolve_target(self, context: bpy.types.Context) -> bpy.types.Object | None:
-        """Return the active object iff it passes ``element_checker`` (or the
-        check is skipped). ``None`` signals the operator should bail with
-        ``{'CANCELLED'}``."""
-        obj = context.active_object
-        if not obj:
-            return None
-        if not self.skip_element_check:
-            element = tool.Ifc.get_entity(obj)
-            if not element or not self.element_checker(element):
-                return None
-        return obj
-
-
-class CycleTypeMixin(TypeAccessorBase):
-    """Operator mixin that cycles through ``type_literal``'s values.
-
-    Shift-click reverses direction."""
-
-    reverse: bpy.props.BoolProperty(name="Reverse", default=False, options={"HIDDEN", "SKIP_SAVE"})
-
-    def invoke(self, context: bpy.types.Context, event: bpy.types.Event) -> set[str]:
-        self.reverse = event.shift
-        return self.execute(context)
-
-    def _cycle_type(self, context: bpy.types.Context) -> set[str]:
-        obj = self._resolve_target(context)
-        if obj is None:
-            return {"CANCELLED"}
-
-        props = self.props_getter(obj)
-        types = get_args(self.type_literal)
-        current = getattr(props, self.type_attr)
-        idx = types.index(current) if current in types else 0
-        direction = -1 if self.reverse else 1
-        setattr(props, self.type_attr, types[(idx + direction) % len(types)])
-
-        return {"FINISHED"}
-
-
-class PickTypeMixin(TypeAccessorBase):
-    """Operator mixin that opens a popup menu listing ``type_literal``'s values.
-
-    Empty ``value`` ⇒ ``invoke`` opens the popup; non-empty ⇒ the user picked
-    an item and ``_pick_type`` applies it.
-
-    When invoked mid-click (e.g. from a gizmo's ``target_set_operator``), the
-    menu opens only after the originating ``LEFTMOUSE`` releases. Otherwise
-    the still-pressed click flows straight into Blender's drag-through-pick
-    gesture and the menu commits whichever item the cursor drifts over on
-    release. Other invocation paths (command-palette / F3, EXEC_DEFAULT, F6
-    redo) bypass the wait and open the menu immediately.
-
-    The ``value`` StringProperty is declared on this mixin but registered via
-    the concrete Operator subclass's MRO scan — do not instantiate the mixin
-    standalone."""
-
-    # Carries the picked value through invoke→execute; empty default
-    # distinguishes "open popup" from "apply".
-    value: bpy.props.StringProperty(default="", options={"HIDDEN", "SKIP_SAVE"})
-
-    def invoke(self, context: bpy.types.Context, event: bpy.types.Event) -> set[str]:
-        """Open the picker menu, or apply a value that was preset by a
-        menu-item click.
-
-        Routing through ``execute()`` keeps subclass IFC-transaction wrapping
-        in the loop and means F6 redo / ``EXEC_DEFAULT`` reach the apply path."""
-        if self.value:
-            return self.execute(context)
-
-        if self._resolve_target(context) is None:
-            return {"CANCELLED"}
-
-        if event.value == "PRESS":
-            context.window_manager.modal_handler_add(self)
-            return {"RUNNING_MODAL"}
-        return self._open_picker(context)
-
-    def modal(self, context: bpy.types.Context, event: bpy.types.Event) -> set[str]:
-        if event.type == "LEFTMOUSE" and event.value == "RELEASE":
-            self._open_picker(context)
-            # INTERFACE does not remove a modal handler; only FINISHED /
-            # CANCELLED do.
-            return {"CANCELLED"}
-        if event.type in {"RIGHTMOUSE", "ESC"}:
-            return {"CANCELLED"}
-        return {"RUNNING_MODAL"}
-
-    def _open_picker(self, context: bpy.types.Context) -> set[str]:
-        bl_idname = self.bl_idname
-        values = list(get_args(self.type_literal))
-
-        def draw(menu_self, _menu_context):
-            layout = menu_self.layout
-            for v in values:
-                op = layout.operator(bl_idname, text=v)
-                op.value = v
-
-        context.window_manager.popup_menu(draw, title=self.bl_label, icon="MENU_PANEL")
-        # The type change is a two-step interaction: this invocation just OPENS
-        # the menu (no state change yet); a SECOND invocation fires when the
-        # user clicks a menu item — that one writes ``props.<type_attr>`` and
-        # returns FINISHED. By returning INTERFACE here (and not FINISHED), the
-        # menu-open step is excluded from Blender's undo stack so the user
-        # gets exactly ONE undo entry per type change. If we returned FINISHED
-        # here too, the stack would gain a no-op "opened the menu" entry that
-        # Ctrl+Z would dismiss before reverting the actual type change —
-        # confusing UX where the first Ctrl+Z appears to do nothing.
-        return {"INTERFACE"}
-
-    def _pick_type(self, context: bpy.types.Context) -> set[str]:
-        if not self.value:
-            # No-op rather than re-open the menu, so command-palette misuse
-            # doesn't infinite-loop.
-            return {"CANCELLED"}
-
-        obj = self._resolve_target(context)
-        if obj is None:
-            return {"CANCELLED"}
-
-        if self.value not in get_args(self.type_literal):
-            self.report({"WARNING"}, f"Unknown {self.type_attr}: {self.value!r}")
-            return {"CANCELLED"}
-
-        props = self.props_getter(obj)
-        setattr(props, self.type_attr, self.value)
-        return {"FINISHED"}
-
-
-# --- Undo-resync registry ----------------------------------------------------
-#
-# Per-type regenerators called from ``resync_parametric_drafts_after_undo``
-# (wired into ``bim/handler.py:undo_post`` and ``redo_post``) so the preview
-# mesh of an in-progress parametric draft repaints after Ctrl+Z / Ctrl+Shift+Z.
-#
-# Each regenerator is a one-line lazy-import + call. Lazy imports because
-# ``bonsai.bim.parametric_lifecycle`` loads before ``bim/module/model/*``
-# at addon enable; a module-level import would cycle. Each function-local
-# import lands at first call, after the feature module has registered.
-#
-# Types with no entry — door, window, railing, etc. — are IFC-derived: undo
-# of an IFC mutation already restores the entity, and ``switch_representation``
-# repaints the mesh as a side effect of the next refresh. They don't need a
-# bespoke preview regenerator.
-
-
-def _wall_undo_regenerator(obj: bpy.types.Object) -> None:
-    from bonsai.bim.module.model.wall import regenerate_wall_mesh_from_props
-
-    regenerate_wall_mesh_from_props(obj)
-
-
-def _stair_undo_regenerator(obj: bpy.types.Object) -> None:
-    from bonsai.bim.module.model.stair import regenerate_stair_mesh
-
-    regenerate_stair_mesh(obj)
-
-
-def _roof_undo_regenerator(obj: bpy.types.Object) -> None:
-    from bonsai.bim.module.model.roof import update_roof_modifier_bmesh
-
-    update_roof_modifier_bmesh(obj)
-
-
-UNDO_REGENERATORS: dict[str, Callable[[bpy.types.Object], None]] = {
-    "wall": _wall_undo_regenerator,
-    "stair": _stair_undo_regenerator,
-    "roof": _roof_undo_regenerator,
-}
-
-
-def resync_parametric_drafts_after_undo() -> None:
-    """Re-render preview meshes for every parametric draft currently active.
-
-    Walks all objects, skips any not in a registered parametric edit,
-    dispatches to the per-type regenerator in ``UNDO_REGENERATORS``. A type
-    without an entry is left alone — its preview is either already correct
-    (IFC-derived) or has no draft preview mesh."""
-    for obj in bpy.data.objects:
-        feature = tool.Parametric.is_object_editing(obj)
-        if feature is None:
-            continue
-        regenerator = UNDO_REGENERATORS.get(feature.name)
-        if regenerator is None:
-            continue
-        regenerator(obj)
-    tool.Blender.update_all_viewports()
-
-
-@persistent
-def _resync_on_undo(scene: bpy.types.Scene) -> None:
-    resync_parametric_drafts_after_undo()
-
-
-def install_parametric_lifecycle_handlers() -> None:
-    """Append the undo-resync callback to undo_post and redo_post; idempotent.
-
-    Caller must invoke this AFTER appending the central undo/redo handlers so
-    regenerators see restored IFC state — bpy.app.handlers fire in append order."""
-    for hook in (bpy.app.handlers.undo_post, bpy.app.handlers.redo_post):
-        if _resync_on_undo not in hook:
-            hook.append(_resync_on_undo)
-
-
-def uninstall_parametric_lifecycle_handlers() -> None:
-    for hook in (bpy.app.handlers.undo_post, bpy.app.handlers.redo_post):
-        try:
-            hook.remove(_resync_on_undo)
-        except ValueError:
-            pass
@@ -333,7 +333,7 @@ class Attribute(PropertyGroup):
    filter_glob: StringProperty()
    is_null: BoolProperty(name="Is Null", update=update_is_null)
    is_selected: BoolProperty(name="Is Selected", default=False)
-    subitems_values: CollectionProperty(type=StrProperty)
+    subitems_values: CollectionProperty(type=StrProperty)  # pyright: ignore[reportRedeclaration]

    # Attribute parameters.
    is_optional: BoolProperty(name="Is Optional")
@@ -342,7 +342,7 @@ class Attribute(PropertyGroup):
    value_max: FloatProperty(description="This is used to validate int_value and float_value")
    value_max_constraint: BoolProperty(default=False, description="True if the numerical value has an upper bound")
    special_type: StringProperty(name="Special Value Type", default="")
-    use_explorer_ui: BoolProperty()
+    use_explorer_ui: BoolProperty()  # pyright: ignore[reportRedeclaration]
    metadata: StringProperty(name="Metadata", description="For storing some additional information about the attribute")
    update: StringProperty(name="Update", description="Custom update function to be executed")

@@ -15,8 +15,6 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 import os
 import platform
@@ -382,76 +380,6 @@ class GizmoPreferencesStair(bpy.types.PropertyGroup):
        cycle: bool


-class GizmoPreferencesWall(bpy.types.PropertyGroup):
-    """Property group for wall gizmo visibility settings."""
-
-    length: BoolProperty(
-        name="Length",
-        default=True,
-        description="Show the length dimension gizmo along the wall axis.",
-    )
-    height: BoolProperty(
-        name="Height",
-        default=True,
-        description="Show the height dimension gizmo at the wall's start endpoint.",
-    )
-    height_end: BoolProperty(
-        name="Height (far end, walls > 5m)",
-        default=True,
-        description=(
-            "Show a second height gizmo at the wall's far end so long walls don't "
-            "require panning to reach the handle."
-        ),
-    )
-    x_angle: BoolProperty(
-        name="Slope",
-        default=True,
-        description="Show the slope gizmo at the wall top measuring horizontal displacement of the top face.",
-    )
-    cycle: BoolProperty(
-        name="Cycle Offset Baseline",
-        default=True,
-        description="Show the baseline-state icon (Exterior / Centreline / Interior) in the editing icon row.",
-    )
-    scissors: BoolProperty(
-        name="Split at cursor",
-        default=True,
-        description="Show the split icon at the 3D cursor when it lies within the wall's length range.",
-    )
-    extend: BoolProperty(
-        name="Extend length to cursor X",
-        default=True,
-        description="Show the extend-length icon at the 3D cursor's projected wall-axis X.",
-    )
-    extend_height: BoolProperty(
-        name="Extend height to cursor Z",
-        default=True,
-        description="Show the extend-height icon at the 3D cursor's Z, on the wall axis.",
-    )
-    rotate: BoolProperty(
-        name="Rotate 90°",
-        default=True,
-        description="Show the rotate-90 icon in the editing icon row (rotates the wall around its Z axis).",
-    )
-    toggle_openings: BoolProperty(
-        name="Toggle Openings",
-        default=True,
-        description="Show the toggle-openings icon next to the pen (toggles opening fill visibility in the viewport).",
-    )
-
-    if TYPE_CHECKING:
-        length: bool
-        height: bool
-        height_end: bool
-        x_angle: bool
-        cycle: bool
-        scissors: bool
-        extend: bool
-        extend_height: bool
-        rotate: bool
-        toggle_openings: bool
-
-
 class GizmoPreferences(bpy.types.PropertyGroup):
    """Property group for all gizmo visibility settings."""

@@ -463,14 +391,12 @@ class GizmoPreferences(bpy.types.PropertyGroup):
    door: bpy.props.PointerProperty(type=GizmoPreferencesDoor)
    window: bpy.props.PointerProperty(type=GizmoPreferencesWindow)
    stair: bpy.props.PointerProperty(type=GizmoPreferencesStair)
-    wall: bpy.props.PointerProperty(type=GizmoPreferencesWall)

    if TYPE_CHECKING:
        draw_gizmos_in_3d_viewport: bool
        door: GizmoPreferencesDoor
        window: GizmoPreferencesWindow
        stair: GizmoPreferencesStair
-        wall: GizmoPreferencesWall


 class DocPreferences(bpy.types.PropertyGroup):
@@ -739,7 +665,7 @@ class BIM_ADDON_preferences(bpy.types.AddonPreferences):
        name="Disable Undo When Saving (Faster saves, no undo for you!)", default=False
    )
    should_stream: BoolProperty(name="Stream Data From IFC-SPF (Only for advanced users)", default=False)
-    should_always_cache: BoolProperty(
+    should_always_cache: BoolProperty(  # pyright: ignore[reportRedeclaration]
        name="Always Cache Geometry",
        description="Whether to always cache geometry regardless of 'Cache' setting during Advanced Project Load.",
    )
@@ -923,56 +849,49 @@ class BIM_ADDON_preferences(bpy.types.AddonPreferences):
        bonsai.bim.helper.draw_expandable_panel(box, context, "Parametric Door", self.draw_door_gizmo_parameters)
        bonsai.bim.helper.draw_expandable_panel(box, context, "Parametric Window", self.draw_window_gizmo_parameters)
        bonsai.bim.helper.draw_expandable_panel(box, context, "Parametric Stair", self.draw_stair_gizmo_parameters)
-        bonsai.bim.helper.draw_expandable_panel(box, context, "Parametric Wall", self.draw_wall_gizmo_parameters)
-
-    def _draw_parametric_gizmo_parameters(
-        self,
-        layout: bpy.types.UILayout,
-        gizmo_pg: bpy.types.PropertyGroup,
-        dimension_gizmo_class: type,
-        special_gizmo_names: frozenset[str] = frozenset(),
-    ) -> None:
-        """Draw the per-element gizmo visibility toggles. Surfaces every annotation
-        on ``gizmo_pg`` that either maps to one of ``dimension_gizmo_class``'s
-        dimension gizmos or is named in ``special_gizmo_names`` (non-dimension icons
-        like baseline cycle, scissors, rotate, …)."""
-        visible_names = {p.attr_name for p in dimension_gizmo_class.dimension_gizmo_props} | special_gizmo_names
-        try:
-            annotations = gizmo_pg.__annotations__
-        except AttributeError:
-            annotations = type(gizmo_pg).__annotations__
-        for prop in annotations:
-            if prop in visible_names:
-                layout.prop(gizmo_pg, prop)

    def draw_door_gizmo_parameters(self, layout: bpy.types.UILayout, context: bpy.types.Context) -> None:
        from bonsai.bim.module.model.door import GizmoDoorEdition

-        self._draw_parametric_gizmo_parameters(
-            layout, self.gizmos.door, GizmoDoorEdition, frozenset({"swing_arc", "flip_arc"})
-        )
+        door_gizmos = self.gizmos.door
+        gizmo_prop_names = {p.attr_name for p in GizmoDoorEdition.dimension_gizmo_props}
+        # Add special gizmos not in dimension_gizmo_props
+        gizmo_prop_names.update(("swing_arc", "flip_arc"))
+        try:
+            annotations = door_gizmos.__annotations__
+        except AttributeError:
+            annotations = type(door_gizmos).__annotations__
+        for prop in annotations:
+            if prop in gizmo_prop_names:
+                layout.prop(door_gizmos, prop)

    def draw_window_gizmo_parameters(self, layout: bpy.types.UILayout, context: bpy.types.Context) -> None:
        from bonsai.bim.module.model.window import GizmoWindowEdition

-        self._draw_parametric_gizmo_parameters(layout, self.gizmos.window, GizmoWindowEdition)
+        window_gizmos = self.gizmos.window
+        gizmo_prop_names = {p.attr_name for p in GizmoWindowEdition.dimension_gizmo_props}
+        try:
+            annotations = window_gizmos.__annotations__
+        except AttributeError:
+            annotations = type(window_gizmos).__annotations__
+        for prop in annotations:
+            if prop in gizmo_prop_names:
+                layout.prop(window_gizmos, prop)

    def draw_stair_gizmo_parameters(self, layout: bpy.types.UILayout, context: bpy.types.Context) -> None:
        from bonsai.bim.module.model.stair import GizmoStairEdition

-        self._draw_parametric_gizmo_parameters(
-            layout, self.gizmos.stair, GizmoStairEdition, frozenset({"lock", "plus", "minus", "cycle"})
-        )
-
-    def draw_wall_gizmo_parameters(self, layout: bpy.types.UILayout, context: bpy.types.Context) -> None:
-        from bonsai.bim.module.model.wall import GizmoWallEdition
-
-        self._draw_parametric_gizmo_parameters(
-            layout,
-            self.gizmos.wall,
-            GizmoWallEdition,
-            frozenset({"cycle", "scissors", "extend", "extend_height", "rotate", "toggle_openings"}),
-        )
+        stair_gizmos = self.gizmos.stair
+        gizmo_prop_names = {p.attr_name for p in GizmoStairEdition.dimension_gizmo_props}
+        # Add special gizmos not in dimension_gizmo_props
+        special_gizmo_names = {"lock", "plus", "minus", "cycle"}
+        try:
+            annotations = stair_gizmos.__annotations__
+        except AttributeError:
+            annotations = type(stair_gizmos).__annotations__
+        for prop in annotations:
+            if prop in gizmo_prop_names or prop in special_gizmo_names:
+                layout.prop(stair_gizmos, prop)

    def draw_model_settings(self, layout: bpy.types.UILayout, context: bpy.types.Context) -> None:
        layout.prop(self, "occurrence_name_style")
@@ -93,8 +93,6 @@ def enter_aggregate_mode(
    aggregator: type[tool.Aggregate],
    obj: bpy.types.Object,
 ):
-    if not aggregator.get_aggregate_props().in_aggregate_mode:
-        aggregator.save_previous_selection()
    aggregator.update_previous_aggregate_mode_state()
    if aggregator.get_higher_aggregate():
        aggregator.disable_aggregate_mode()
@@ -109,7 +107,6 @@ def exit_aggregate_mode(aggregator: type[tool.Aggregate]):
        aggregator.enable_aggregate_mode(new_obj)
    else:
        aggregator.disable_aggregate_mode()
-        aggregator.restore_previous_selection()


 class IncompatibleAggregateError(Exception):
@@ -151,11 +151,8 @@ def merge_branch(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], operator: bpy.t
        conflicts = ifcgit.git_mergetool(mergetool, path_ifc)
        if conflicts is not None:
            ifcgit.git_merge_abort()
-            if conflicts:
-                ifcgit.store_merge_conflicts(conflicts)
-                operator.report({"WARNING"}, "Merge failed — see the conflict report in the panel below")
-            else:
-                operator.report({"ERROR"}, "Merge tool failed — check that ifcmerge is installed correctly")
+            ifcgit.store_merge_conflicts(conflicts)
+            operator.report({"WARNING"}, "Merge failed — see the conflict report in the panel below")
            return False
        ifcgit.commit_merge(path_ifc)

@@ -15,13 +15,10 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 from __future__ import annotations

-import math
-from typing import TYPE_CHECKING, Any, Literal, Optional
+from typing import TYPE_CHECKING, Literal, Optional

 if TYPE_CHECKING:
    import bpy
@@ -34,24 +31,6 @@ if TYPE_CHECKING:
    OffsetType = Literal["CENTER", "EXTERIOR", "INTERIOR"]


-# Arc sample count for fillet preview polylines. 24 samples produces a visually
-# smooth arc at common viewport scales without bloating the GPU batch.
-FILLET_DEFAULT_ARC_RESOLUTION = 24
-# Dot-product floor for treating two wall-axis segments as parallel — below
-# this the projected intersection is too sensitive to floating-point noise
-# to be useful as a junction apex. Calibrated to ~2° from parallel.
-PARALLEL_DOT_THRESHOLD = 0.9994
-# Perpendicular distance (SI metres) under which two parallel wall axes are
-# considered to share the same infinite line. Calibrated to absorb sub-50mm
-# placement drift between authored-joined walls without merging genuinely
-# offset parallel walls.
-COLLINEAR_LINE_TOLERANCE = 0.05
-# Default proximity (SI metres) for classifying a layer offset against the
-# canonical EXTERIOR / CENTER / INTERIOR baselines. Tight enough that ordinary
-# millimetre-scale modelling intent always falls into the nearest baseline.
-BASELINE_OFFSET_TOLERANCE = 0.001
-
-
 def unjoin_walls(
    ifc: type[tool.Ifc],
    blender: type[tool.Blender],
@@ -161,73 +140,23 @@ def align_objects(
    model.align_objects(reference_obj, objs, align_type)


-def regenerate_wall_to_underside(
-    ifc: type[tool.Ifc],
-    geometry: type[tool.Geometry],
-    model: type[tool.Model],
-    wall_objs: list[bpy.types.Object],
-) -> None:
-    """Re-clip walls to their connected underside objects after the slab has moved."""
-    clipped_objs = []
-    for obj in wall_objs:
-        wall = ifc.get_entity(obj)
-        slab_objs = model.get_connected_slab_objs(wall)
-        if not slab_objs:
-            continue
-        if ifc.is_moved(obj):
-            geometry.run_edit_object_placement(obj=obj)
-        # Sync each slab's Blender mesh to its current IFC representation before
-        # reading face geometry, so a changed profile is picked up correctly.
-        model.reload_body_representation(slab_objs)
-        model.remove_wall_to_underside_booleans(wall)
-        for slab_obj in slab_objs:
-            clip = model.get_slab_clipping_bmesh(slab_obj)
-            if clip:
-                model.clip_wall_to_slab(wall, clip)
-        clipped_objs.append(obj)
-    if clipped_objs:
-        model.reload_body_representation(clipped_objs)
-
-
 def extend_wall_to_slab(
    ifc: type[tool.Ifc],
    geometry: type[tool.Geometry],
    model: type[tool.Model],
-    slab_objs: list[bpy.types.Object],
+    slab_obj: bpy.types.Object,
    wall_objs: list[bpy.types.Object],
 ) -> None:
-    # If any wall is currently in item mode, exit it before modifying the
-    # representation. Leaving stale item objects around causes delete_ifc_item
-    # to later remove the extrusion (or other pre-boolean items) from inside
-    # the boolean chain, corrupting the IFC model.
-    geom_props = geometry.get_geometry_props()
-    if geom_props.representation_obj in wall_objs:
-        geometry.disable_item_mode()
-    clipped_walls = []
+    if not (clip := model.get_slab_clipping_bmesh(slab_obj)):
+        return  # Nothing to clip?
+    slab = ifc.get_entity(slab_obj)
    for obj in wall_objs:
        if ifc.is_moved(obj):
            geometry.run_edit_object_placement(obj=obj)
        wall = ifc.get_entity(obj)
-        # Merge previously connected slabs with newly requested ones so that
-        # re-running the operator never produces duplicate booleans and never
-        # silently discards clips that were applied in an earlier call.
-        existing = model.get_connected_slab_objs(wall)
-        seen = {id(s) for s in existing}
-        all_slab_objs = list(existing) + [s for s in slab_objs if id(s) not in seen]
-        # Remove stale booleans once, then re-clip against the full set.
-        model.remove_wall_to_underside_booleans(wall)
-        did_clip = False
-        for slab_obj in all_slab_objs:
-            clip = model.get_slab_clipping_bmesh(slab_obj)
-            if not clip:
-                continue
-            model.clip_wall_to_slab(wall, clip)
-            model.connect_wall_to_slab(wall, ifc.get_entity(slab_obj))
-            did_clip = True
-        if did_clip:
-            clipped_walls.append(obj)
-    if clipped_walls:
-        model.reload_body_representation(clipped_walls)
+        model.clip_wall_to_slab(wall, clip)
+        model.connect_wall_to_slab(wall, slab)
+    model.reload_body_representation(wall_objs)


 class RequireTwoWallsError(Exception):
@@ -244,438 +173,3 @@ class RequireAtLeastTwoElements(Exception):

 class RequireLayeredElement(Exception):
    pass
-
-
-# --- Wall geometry math (pure) ------------------------------------------------
-# Tuple in / tuple out so these helpers run without ``bpy`` or ``mathutils``.
-# Callers convert ``mathutils.Vector`` at the boundary.
-
-
-def baseline_from_offset(offset: float, thickness: float, tolerance: float = BASELINE_OFFSET_TOLERANCE) -> str:
-    """Classify a numeric layer offset as EXTERIOR / CENTER / INTERIOR.
-
-    Handles both POSITIVE and NEGATIVE direction_sense walls. Returns the
-    closest canonical baseline; falls back to ``"CENTER"`` when nothing is
-    within ``tolerance``."""
-    candidates = (
-        ("EXTERIOR", 0.0),
-        ("CENTER", -thickness / 2),
-        ("INTERIOR", -thickness),
-        ("EXTERIOR", thickness),
-        ("CENTER", thickness / 2),
-        ("INTERIOR", 0.0),
-    )
-    best = min(candidates, key=lambda c: abs(offset - c[1]))
-    return best[0] if abs(offset - best[1]) < tolerance else "CENTER"
-
-
-def project_axis_intersection(
-    seg_a: tuple[tuple[float, float, float], tuple[float, float, float]],
-    seg_b: tuple[tuple[float, float, float], tuple[float, float, float]],
-    parallel_threshold: float,
-) -> Optional[tuple[float, float, float]]:
-    """Compute the 2D (X,Y plane) intersection of two world-space axis segments.
-
-    Each segment is a pair of 3-tuples. Returns the intersection as a 3-tuple
-    (Z is the average of the four input Zs, for visual placement) or ``None`` if
-    the segments are parallel within ``parallel_threshold`` (a dot-product magnitude
-    threshold — see ``PARALLEL_DOT_THRESHOLD`` for the calibrated value)."""
-    p1, p2 = seg_a
-    p3, p4 = seg_b
-    d1x, d1y = p2[0] - p1[0], p2[1] - p1[1]
-    d2x, d2y = p4[0] - p3[0], p4[1] - p3[1]
-    d1_len = (d1x * d1x + d1y * d1y) ** 0.5
-    d2_len = (d2x * d2x + d2y * d2y) ** 0.5
-    if d1_len < 1e-9 or d2_len < 1e-9:
-        return None
-    dot = (d1x * d2x + d1y * d2y) / (d1_len * d2_len)
-    if abs(dot) >= parallel_threshold:
-        return None
-    denom = d1x * d2y - d1y * d2x
-    if abs(denom) < 1e-9:
-        return None
-    t = ((p3[0] - p1[0]) * d2y - (p3[1] - p1[1]) * d2x) / denom
-    ix = p1[0] + t * d1x
-    iy = p1[1] + t * d1y
-    iz = (p1[2] + p2[2] + p3[2] + p4[2]) / 4
-    return (ix, iy, iz)
-
-
-def opening_is_past_cut(min_t: float, cut_percentage: float) -> bool:
-    """True when the opening's near edge sits past the cut on the t axis.
-
-    Strict inequality is load-bearing: a boundary touch or NaN keeps the
-    opening on both walls — the safe default when extent resolution fails."""
-    return min_t > cut_percentage
-
-
-def opening_is_before_cut(max_t: float, cut_percentage: float) -> bool:
-    """True when the opening's far edge sits before the cut on the t axis."""
-    return max_t < cut_percentage
-
-
-def opening_straddles_cut(min_t: float, max_t: float, cut_percentage: float) -> bool:
-    """True when the opening's extent crosses the cut on the t axis."""
-    return min_t < cut_percentage < max_t
-
-
-WallJoinState = Literal["joined", "collinear", "intersect", "none"]
-
-
-def classify_wall_join_state(
-    seg_a: tuple[tuple[float, float, float], tuple[float, float, float]],
-    seg_b: tuple[tuple[float, float, float], tuple[float, float, float]],
-    are_joined: bool,
-    parallel_threshold: float,
-    collinear_tolerance: float,
-) -> tuple[WallJoinState, Optional[tuple[float, float, float]]]:
-    """Classify a wall pair's geometric state — ``(state, intersection)``.
-
-    Priority: ``"joined"`` (caller-supplied flag) → ``"collinear"`` →
-    ``"intersect"`` (projected point returned) → ``"none"`` (parallel,
-    non-collinear)."""
-    if are_joined:
-        return "joined", None
-    if are_axes_collinear(seg_a, seg_b, parallel_threshold, collinear_tolerance):
-        return "collinear", None
-    intersection = project_axis_intersection(seg_a, seg_b, parallel_threshold)
-    if intersection is None:
-        return "none", None
-    return "intersect", intersection
-
-
-def wall_join_preview_lines(
-    seg_a: tuple[tuple[float, float, float], tuple[float, float, float]],
-    seg_b: tuple[tuple[float, float, float], tuple[float, float, float]],
-    intersection: tuple[float, float, float],
-) -> list[tuple[tuple[float, float, float], tuple[float, float, float]]]:
-    """Two segments showing each wall axis extending to ``intersection``.
-
-    Each segment runs from the input axis's nearest endpoint to the
-    intersection, held at that wall's own Z. Returned in input order
-    ``[floor_a, floor_b]``."""
-    ix, iy, _ = intersection
-
-    def _nearest(seg: tuple[tuple[float, float, float], tuple[float, float, float]]) -> tuple[float, float, float]:
-        return min(seg, key=lambda p: (p[0] - ix) ** 2 + (p[1] - iy) ** 2)
-
-    near_a = _nearest(seg_a)
-    near_b = _nearest(seg_b)
-    return [
-        (near_a, (ix, iy, near_a[2])),
-        (near_b, (ix, iy, near_b[2])),
-    ]
-
-
-def resolve_extend_walls_target(
-    target_obj: Any,
-    objs: list[Any],
-    reverse: bool,
-) -> tuple[Any, list[Any]]:
-    """Pick which object is the extend-target and which are extended.
-
-    Default direction: ``objs`` are extended to meet ``target_obj``.
-    Reversed direction (``reverse=True``) swaps the pair — equivalent to
-    having passed them in the opposite order. The swap is well-defined only
-    for the 1+1 case (one target + one other); for ``n>1`` it would be
-    ambiguous, so the default direction is preserved instead."""
-    if reverse and target_obj is not None and len(objs) == 1:
-        return objs[0], [target_obj]
-    return target_obj, objs
-
-
-def displacement_from_x_angle(height: float, x_angle: float) -> float:
-    """Top-edge horizontal displacement for a wall of given vertical ``height``
-    and slope ``x_angle`` (radians). Inverse of ``x_angle_from_displacement``."""
-    return height * math.tan(x_angle)
-
-
-def x_angle_from_displacement(height: float, displacement: float) -> float:
-    """Recover slope ``x_angle`` (radians) from a top-edge horizontal displacement.
-
-    ``height`` is clamped to ``max(height, 1e-6)`` so zero-height walls map
-    cleanly to ``±π/2`` instead of dividing by zero."""
-    return math.atan2(displacement, max(height, 1e-6))
-
-
-def vertical_height_from_extrusion_depth(extrusion_depth: float, x_angle: float) -> float:
-    """Vertical height of a wall given its slanted extrusion depth and slope.
-
-    ``IfcExtrudedAreaSolid.Depth`` measures along the (possibly slanted) extrusion
-    direction. The vertical height the user thinks of is ``depth * cos(x_angle)``.
-    Unit-agnostic: the result is in the same units as ``extrusion_depth``."""
-    return extrusion_depth * abs(math.cos(x_angle))
-
-
-def extrusion_depth_from_vertical_height(vertical_height: float, x_angle: float) -> float:
-    """``vertical_height / cos(x_angle)`` with ``cos`` clamped at ``1e-6`` to
-    stay finite near ``±π/2``."""
-    return vertical_height / max(abs(math.cos(x_angle)), 1e-6)
-
-
-def length_and_height_from_extrusion(
-    extrusion_depth: float,
-    x_angle: float,
-    reference_line_x_extent: float,
-    unit_scale: float,
-) -> tuple[float, float]:
-    """SI ``(length, vertical_height)`` of a LAYER2 wall.
-
-    Height is the *vertical* projection of the slanted depth, not the
-    slanted depth itself."""
-    length = reference_line_x_extent * unit_scale
-    height = vertical_height_from_extrusion_depth(extrusion_depth * unit_scale, x_angle)
-    return length, height
-
-
-def are_axes_collinear(
-    seg_a: tuple[tuple[float, float, float], tuple[float, float, float]],
-    seg_b: tuple[tuple[float, float, float], tuple[float, float, float]],
-    parallel_threshold: float = PARALLEL_DOT_THRESHOLD,
-    line_tolerance: float = COLLINEAR_LINE_TOLERANCE,
-) -> bool:
-    """True if both axis segments lie on the same infinite line in plan.
-
-    Two conditions: directions must be (anti-)parallel within ``parallel_threshold``,
-    AND any endpoint of B must lie on A's infinite line within ``line_tolerance``.
-    Plan-only (Z ignored)."""
-    d1x, d1y = seg_a[1][0] - seg_a[0][0], seg_a[1][1] - seg_a[0][1]
-    d2x, d2y = seg_b[1][0] - seg_b[0][0], seg_b[1][1] - seg_b[0][1]
-    d1_len = (d1x * d1x + d1y * d1y) ** 0.5
-    d2_len = (d2x * d2x + d2y * d2y) ** 0.5
-    if d1_len < 1e-9 or d2_len < 1e-9:
-        return False
-    if abs((d1x * d2x + d1y * d2y) / (d1_len * d2_len)) < parallel_threshold:
-        return False
-    # Project seg_b[0] onto the infinite line through seg_a; the perpendicular
-    # distance to the original point tells us how far off the line B sits.
-    nx, ny = d1x / d1_len, d1y / d1_len
-    dx, dy = seg_b[0][0] - seg_a[0][0], seg_b[0][1] - seg_a[0][1]
-    t = dx * nx + dy * ny
-    proj_x = seg_a[0][0] + nx * t
-    proj_y = seg_a[0][1] + ny * t
-    perp_x = seg_b[0][0] - proj_x
-    perp_y = seg_b[0][1] - proj_y
-    return (perp_x * perp_x + perp_y * perp_y) ** 0.5 < line_tolerance
-
-
-def closest_endpoint_midpoint(
-    seg_a: tuple[tuple[float, float, float], tuple[float, float, float]],
-    seg_b: tuple[tuple[float, float, float], tuple[float, float, float]],
-) -> tuple[float, float, float]:
-    """Midpoint of the closest endpoint pair between two segments."""
-    endpoints_a = (seg_a[0], seg_a[1])
-    endpoints_b = (seg_b[0], seg_b[1])
-
-    def _distance_sq(p: tuple[float, float, float], q: tuple[float, float, float]) -> float:
-        return (p[0] - q[0]) ** 2 + (p[1] - q[1]) ** 2 + (p[2] - q[2]) ** 2
-
-    closest_pair = min(((a, b) for a in endpoints_a for b in endpoints_b), key=lambda pair: _distance_sq(*pair))
-    a, b = closest_pair
-    return ((a[0] + b[0]) / 2, (a[1] + b[1]) / 2, (a[2] + b[2]) / 2)
-
-
-def compute_path_connection_location(
-    seg_self: tuple[tuple[float, float, float], tuple[float, float, float]],
-    self_conn_type: str,
-    seg_other: tuple[tuple[float, float, float], tuple[float, float, float]],
-    other_conn_type: str,
-    parallel_threshold: float = PARALLEL_DOT_THRESHOLD,
-) -> tuple[float, float, float]:
-    """World-space location of a single ``IfcRelConnectsPathElements`` between
-    two wall axes.
-
-    Priority: ``self``'s ATSTART/ATEND endpoint → ``other``'s ATSTART/ATEND
-    endpoint → axis intersection → closest-endpoint midpoint fallback."""
-    if self_conn_type == "ATSTART":
-        return seg_self[0]
-    if self_conn_type == "ATEND":
-        return seg_self[1]
-    if other_conn_type == "ATSTART":
-        return seg_other[0]
-    if other_conn_type == "ATEND":
-        return seg_other[1]
-    intersection = project_axis_intersection(seg_self, seg_other, parallel_threshold)
-    if intersection is not None:
-        return intersection
-    return closest_endpoint_midpoint(seg_self, seg_other)
-
-
-def _vec_sub(a: tuple[float, float, float], b: tuple[float, float, float]) -> tuple[float, float, float]:
-    return (a[0] - b[0], a[1] - b[1], a[2] - b[2])
-
-
-def _vec_dot(a: tuple[float, float, float], b: tuple[float, float, float]) -> float:
-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
-
-
-def _vec_cross(a: tuple[float, float, float], b: tuple[float, float, float]) -> tuple[float, float, float]:
-    return (a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0])
-
-
-def _vec_length(v: tuple[float, float, float]) -> float:
-    return (v[0] * v[0] + v[1] * v[1] + v[2] * v[2]) ** 0.5
-
-
-def _rotate_around_axis(
-    v: tuple[float, float, float],
-    axis: tuple[float, float, float],
-    angle: float,
-) -> tuple[float, float, float]:
-    """Rotate ``v`` around unit-length ``axis`` by ``angle`` radians."""
-    cos_a = math.cos(angle)
-    sin_a = math.sin(angle)
-    dot = _vec_dot(axis, v)
-    cross = _vec_cross(axis, v)
-    k = 1.0 - cos_a
-    return (
-        v[0] * cos_a + cross[0] * sin_a + axis[0] * dot * k,
-        v[1] * cos_a + cross[1] * sin_a + axis[1] * dot * k,
-        v[2] * cos_a + cross[2] * sin_a + axis[2] * dot * k,
-    )
-
-
-def compute_fillet_polylines(
-    seg_a: tuple[tuple[float, float, float], tuple[float, float, float]],
-    seg_b: tuple[tuple[float, float, float], tuple[float, float, float]],
-    radius: float,
-    arc_resolution: int = FILLET_DEFAULT_ARC_RESOLUTION,
-    parallel_threshold: float = PARALLEL_DOT_THRESHOLD,
-) -> dict:
-    """Preview polylines for a circular fillet at the junction of two axes.
-
-    Returns a dict with ``valid``, ``reason``, ``intersection``, ``tangent_a``
-    / ``tangent_b``, ``arc`` (``arc_resolution + 1`` samples), ``arc_center``,
-    ``arc_radius``, ``sweep_angle``, ``sweep_axis``, ``tangent_offset``,
-    ``wall_a_join_side`` / ``wall_b_join_side`` (ATSTART/ATEND/None),
-    ``invalid_radius`` (tangent overshoots — arc + tangents still populated
-    for warning rendering), and ``invalid_axes`` (set on parallel)."""
-    blank: dict = {
-        "valid": False,
-        "reason": None,
-        "intersection": None,
-        "tangent_a": None,
-        "tangent_b": None,
-        "arc": [],
-        "arc_center": None,
-        "arc_radius": radius,
-        "sweep_angle": 0.0,
-        "sweep_axis": None,
-        "tangent_offset": 0.0,
-        "wall_a_join_side": None,
-        "wall_b_join_side": None,
-        "invalid_radius": False,
-        "invalid_axes": None,
-    }
-
-    intersection = project_axis_intersection(seg_a, seg_b, parallel_threshold)
-    if intersection is None:
-        return {**blank, "reason": "parallel", "invalid_axes": [seg_a, seg_b]}
-
-    def _classify(seg, ipt):
-        d0 = (seg[0][0] - ipt[0]) ** 2 + (seg[0][1] - ipt[1]) ** 2 + (seg[0][2] - ipt[2]) ** 2
-        d1 = (seg[1][0] - ipt[0]) ** 2 + (seg[1][1] - ipt[1]) ** 2 + (seg[1][2] - ipt[2]) ** 2
-        if d0 <= d1:
-            return seg[0], seg[1], "ATSTART"
-        return seg[1], seg[0], "ATEND"
-
-    near_a, far_a, side_a = _classify(seg_a, intersection)
-    near_b, far_b, side_b = _classify(seg_b, intersection)
-
-    # Direction along each segment AWAY from the corner. ``far - intersection``
-    # handles both the shared-corner and extended-axes cases uniformly.
-    dir_a_raw = _vec_sub(far_a, intersection)
-    dir_b_raw = _vec_sub(far_b, intersection)
-    far_len_a = _vec_length(dir_a_raw)
-    far_len_b = _vec_length(dir_b_raw)
-    if far_len_a < 1e-9 or far_len_b < 1e-9:
-        return {**blank, "reason": "near_collinear", "intersection": intersection}
-    dir_a = (dir_a_raw[0] / far_len_a, dir_a_raw[1] / far_len_a, dir_a_raw[2] / far_len_a)
-    dir_b = (dir_b_raw[0] / far_len_b, dir_b_raw[1] / far_len_b, dir_b_raw[2] / far_len_b)
-
-    cos_angle = max(-1.0, min(1.0, _vec_dot(dir_a, dir_b)))
-    angle = math.acos(cos_angle)
-    sweep_angle = math.pi - angle
-    if sweep_angle < 1e-3 or sweep_angle > math.pi - 1e-3:
-        return {
-            **blank,
-            "reason": "near_collinear",
-            "intersection": intersection,
-            "sweep_angle": sweep_angle,
-            "wall_a_join_side": side_a,
-            "wall_b_join_side": side_b,
-        }
-
-    tangent_offset = radius * math.tan(sweep_angle / 2)
-    tangent_a = (
-        intersection[0] + dir_a[0] * tangent_offset,
-        intersection[1] + dir_a[1] * tangent_offset,
-        intersection[2] + dir_a[2] * tangent_offset,
-    )
-    tangent_b = (
-        intersection[0] + dir_b[0] * tangent_offset,
-        intersection[1] + dir_b[1] * tangent_offset,
-        intersection[2] + dir_b[2] * tangent_offset,
-    )
-
-    plane_normal_raw = _vec_cross(dir_a, dir_b)
-    pn_len = _vec_length(plane_normal_raw)
-    if pn_len < 1e-9:
-        return {**blank, "reason": "near_collinear", "intersection": intersection}
-    plane_normal = (
-        plane_normal_raw[0] / pn_len,
-        plane_normal_raw[1] / pn_len,
-        plane_normal_raw[2] / pn_len,
-    )
-
-    perp_a = _vec_cross(plane_normal, dir_a)
-    if _vec_dot(perp_a, dir_b) < 0:
-        perp_a = (-perp_a[0], -perp_a[1], -perp_a[2])
-
-    arc_center = (
-        tangent_a[0] + perp_a[0] * radius,
-        tangent_a[1] + perp_a[1] * radius,
-        tangent_a[2] + perp_a[2] * radius,
-    )
-
-    v_a = _vec_sub(tangent_a, arc_center)
-    v_b = _vec_sub(tangent_b, arc_center)
-    sweep_axis = plane_normal
-    if _vec_dot(_vec_cross(v_a, v_b), plane_normal) < 0:
-        sweep_axis = (-plane_normal[0], -plane_normal[1], -plane_normal[2])
-
-    arc_points: list[tuple[float, float, float]] = []
-    for i in range(arc_resolution + 1):
-        t = i / arc_resolution
-        rotated = _rotate_around_axis(v_a, sweep_axis, sweep_angle * t)
-        arc_points.append(
-            (
-                arc_center[0] + rotated[0],
-                arc_center[1] + rotated[1],
-                arc_center[2] + rotated[2],
-            )
-        )
-
-    # Overshoot check only for convex fillets (positive ``tangent_offset``);
-    # the inverted-fillet case puts tangents past the intersection.
-    invalid_radius = tangent_offset > 0 and (tangent_offset > far_len_a or tangent_offset > far_len_b)
-
-    return {
-        "valid": not invalid_radius,
-        "reason": "invalid_radius" if invalid_radius else None,
-        "intersection": intersection,
-        "tangent_a": tangent_a,
-        "tangent_b": tangent_b,
-        "arc": arc_points,
-        "arc_center": arc_center,
-        "arc_radius": radius,
-        "sweep_angle": sweep_angle,
-        "sweep_axis": sweep_axis,
-        "tangent_offset": tangent_offset,
-        "wall_a_join_side": side_a,
-        "wall_b_join_side": side_b,
-        "leg_a_available": far_len_a,
-        "leg_b_available": far_len_b,
-        "invalid_radius": invalid_radius,
-        "invalid_axes": None,
-    }
@@ -1,64 +0,0 @@
-# Bonsai - OpenBIM Blender Add-on
-# Copyright (C) 2026
-#
-# This file is part of Bonsai.
-#
-# Bonsai is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Bonsai is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was generated with the assistance of an AI coding tool.
-
-from __future__ import annotations
-
-import math
-from collections.abc import Iterable
-from typing import TYPE_CHECKING
-
-import bonsai.core.geometry
-
-if TYPE_CHECKING:
-    import bpy
-
-    import bonsai.tool as tool
-
-
-Z_ROTATION_ALIGNMENT_TOLERANCE = 1e-9
-
-
-def _z_rotation_diff(target_z: float, source_z: float) -> float:
-    """Signed Z-Euler difference wrapped to [-π, π]."""
-    return (target_z - source_z + math.pi) % (2 * math.pi) - math.pi
-
-
-def copy_z_rotation_to_selected(
-    ifc: type[tool.Ifc],
-    geometry: type[tool.Geometry],
-    surveyor: type[tool.Surveyor],
-    *,
-    active: bpy.types.Object,
-    targets: Iterable[bpy.types.Object],
-    flip: bool = False,
-) -> int:
-    """Apply ``active``'s Z-Euler rotation to each target."""
-    source_z = surveyor.get_z_rotation(active)
-    if flip:
-        source_z += math.pi
-    rotated = 0
-    for obj in targets:
-        if abs(_z_rotation_diff(surveyor.get_z_rotation(obj), source_z)) < Z_ROTATION_ALIGNMENT_TOLERANCE:
-            continue
-        surveyor.set_z_rotation(obj, source_z)
-        rotated += 1
-        if ifc.get_entity(obj) is not None:
-            bonsai.core.geometry.edit_object_placement(ifc, geometry, surveyor, obj=obj)
-    return rotated
@@ -67,8 +67,7 @@ def assign_container(
    if products := [e for e in root_elements if spatial.can_contain(container, root_element)]:
        ifc.run("spatial.assign_container", products=products, relating_structure=container)
    for element in all_elements:
-        if obj := ifc.get_object(element):
-            collector.assign(obj)
+        collector.assign(ifc.get_object(element))


 def enable_editing_container(spatial: type[tool.Spatial], obj: bpy.types.Object) -> None:
@@ -415,17 +415,6 @@ class Drawing:
    def update_embedded_svg_location(cls, uri, old_location, new_location): pass


-@interface
-class Duplicate:
-    def get_decomposition_relationships(cls, objs): pass
-    def get_connection_relationships(cls, objs): pass
-    def get_port_connection_relationships(cls, objs): pass
-    def recreate_decompositions(cls, relationships, old_to_new): pass
-    def recreate_connections(cls, relationship, old_to_new): pass
-    def recreate_port_connections(cls, snapshot, old_to_new): pass
-    def consume_warnings(cls): pass
-
-
@interface
 class Feature:
    def add_feature(cls, featured_obj, featured_objs): pass
@@ -456,10 +445,8 @@ class Geometry:
    def get_representation_name(cls, representation): pass
    def get_styles(cls, obj): pass
    def get_total_representation_items(cls, obj): pass
-    def has_axis_representation(cls, element): pass
    def has_data_users(cls, data): pass
    def has_material_style_override(cls, obj): pass
-    def has_material_styles(cls, element): pass
    def import_representation_parameters(cls, data): pass
    def is_body_representation(cls, representation): pass
    def is_box_representation(cls, representation): pass
@@ -681,9 +668,6 @@ class Model:
    def export_profile(cls, obj, position=None): pass
    def generate_occurrence_name(cls, element_type, ifc_class): pass
    def get_extrusion(cls, representation): pass
-    def get_connected_slab_objs(cls, wall): pass
-    def get_connected_wall_objs(cls, slab): pass
-    def has_underside_connection(cls, element): pass
    def get_manual_booleans(cls, element): pass
    def get_material_layer_parameters(cls, element): pass
    def get_slab_clipping_bmesh(cls, obj): pass
@@ -699,7 +683,6 @@ class Model:
    def regenerate_profile(cls, obj): pass
    def regenerate_slab(cls, obj): pass
    def reload_body_representation(cls, obj_or_objects): pass
-    def remove_wall_to_underside_booleans(cls, wall): pass
    def replace_object_ifc_representation(cls, ifc_file, ifc_context, obj, new_representation): pass


@@ -793,12 +776,6 @@ class Profile:
    def get_profile(cls, element): pass


-@interface
-class Parametric:
-    def get_geom_generation(cls) -> int: pass
-    def refresh_post_commit(cls) -> None: pass
-
-
@interface
 class Pset:
    def add_proposed_property(cls, name, value, props): pass
@@ -882,6 +859,7 @@ class Root:
    def assign_body_styles(cls, element, obj): pass
    def copy_representation(cls, source, dest): pass
    def does_type_have_representations(cls, element): pass
+    def get_decomposition_relationships(cls, objs): pass
    def get_default_container(cls): pass
    def get_element_representation(cls, element, context): pass
    def get_element_type(cls, element): pass
@@ -895,6 +873,7 @@ class Root:
    def is_in_nest_mode(cls, element): pass
    def is_spatial_element(cls, element): pass
    def link_object_data(cls, source_obj, destination_obj): pass
+    def recreate_decompositions(cls, relationships, old_to_new): pass
    def run_geometry_add_representation(cls, obj=None, context=None, ifc_representation_class=None, profile_set_usage=None): pass
    def set_object_name(cls, obj, element): pass

@@ -1038,8 +1017,6 @@ class Spatial:
    def get_container(cls, element): pass
    def get_decomposed_elements(cls, container, recursive): pass
    def get_decomposition(cls, element): pass
-    def get_host_element(cls, filling): pass
-    def get_host_wall(cls, filling): pass
    def get_object_matrix(cls, obj): pass
    def get_relative_object_matrix(cls, target_obj, relative_to_obj): pass
    def get_root_element(cls, element): pass
@@ -1160,8 +1137,6 @@ class Style:
@interface
 class Surveyor:
    def get_absolute_matrix(cls, obj): pass
-    def get_z_rotation(cls, obj): pass
-    def set_z_rotation(cls, obj, z): pass


@interface
@@ -1228,42 +1203,6 @@ class Voider:
    def void(cls, opening_obj, building_obj): pass


-@interface
-class Array:
-    def bake_children_transform(cls, parent_element, item): pass
-    def constrain_children_to_parent(cls, parent_element): pass
-    def get_all_children_objects(cls, parent_element): pass
-    def get_all_objects(cls, parent_element): pass
-    def get_child_layer_index(cls, child_element): pass
-    def get_children_objects(cls, modifier_data): pass
-    def get_modifiers_data(cls, parent_element): pass
-    def get_parent_element(cls, element): pass
-    def get_parent_object(cls, element): pass
-    def remove_constraints(cls, parent_element): pass
-    def set_children_lock_state(cls, parent_element, item, lock_state): pass
-
-
-@interface
-class Slab:
-    def read_geometry(cls, obj): pass
-
-
-@interface
-class Wall:
-    def collinear_boundary_world(cls, seg_a, seg_b): pass
-    def compute_wall_fillet_geometry(cls, wall_a_obj, wall_b_obj, radius, arc_resolution): pass
-    def get_axis_local_extent(cls, wall): pass
-    def get_length_and_height(cls, wall): pass
-    def get_world_reference_line(cls, obj): pass
-    def get_x_angle(cls, wall): pass
-    def has_layer2_usage(cls, wall): pass
-    def is_straight_axis(cls, wall): pass
-    def path_connection_location_world(cls, seg_self, self_conn_type, seg_other, other_conn_type, parallel_threshold): pass
-    def read_geometry(cls, obj): pass
-    def validate_for_parametric_edit(cls, obj): pass
-    def walk_connected_walls(cls, start_element, node_cap): pass
-
-
@interface
 class Web:
    pass
@@ -20,7 +20,6 @@
 # ruff: noqa: F401

 from bonsai.tool.aggregate import Aggregate
-from bonsai.tool.array import Array
 from bonsai.tool.attribute import Attribute
 from bonsai.tool.bcf import Bcf
 from bonsai.tool.blender import Blender
@@ -38,7 +37,6 @@ from bonsai.tool.debug import Debug
 from bonsai.tool.demo import Demo
 from bonsai.tool.document import Document
 from bonsai.tool.drawing import Drawing
-from bonsai.tool.duplicate import Duplicate
 from bonsai.tool.feature import Feature
 from bonsai.tool.geometry import Geometry
 from bonsai.tool.georeference import Georeference
@@ -53,7 +51,6 @@ from bonsai.tool.misc import Misc
 from bonsai.tool.model import Model
 from bonsai.tool.nest import Nest
 from bonsai.tool.owner import Owner
-from bonsai.tool.parametric import Parametric
 from bonsai.tool.patch import Patch
 from bonsai.tool.polyline import Polyline
 from bonsai.tool.profile import Profile
@@ -66,7 +63,6 @@ from bonsai.tool.resource import Resource
 from bonsai.tool.root import Root
 from bonsai.tool.search import Search
 from bonsai.tool.sequence import Sequence
-from bonsai.tool.slab import Slab
 from bonsai.tool.snap import Snap
 from bonsai.tool.spatial import Spatial
 from bonsai.tool.structural import Structural
@@ -76,5 +72,4 @@ from bonsai.tool.system import System
 from bonsai.tool.tester import Tester
 from bonsai.tool.type import Type
 from bonsai.tool.unit import Unit
-from bonsai.tool.wall import Wall
 from bonsai.tool.web import Web
@@ -205,27 +205,6 @@ class Aggregate(bonsai.core.tool.Aggregate):
        props.in_aggregate_mode = True
        return {"FINISHED"}

-    @classmethod
-    def save_previous_selection(cls) -> None:
-        props = cls.get_aggregate_props()
-        props.previously_selected_objects.clear()
-        for obj in bpy.context.selected_objects:
-            entry = props.previously_selected_objects.add()
-            entry.obj = obj
-
-    @classmethod
-    def restore_previous_selection(cls) -> None:
-        props = cls.get_aggregate_props()
-        for obj in bpy.context.selected_objects:
-            obj.select_set(False)
-        for entry in props.previously_selected_objects:
-            if entry.obj:
-                try:
-                    entry.obj.select_set(True)
-                except Exception:
-                    pass
-        props.previously_selected_objects.clear()
-
    @classmethod
    def disable_aggregate_mode(cls):
        context = bpy.context
@@ -1,207 +0,0 @@
-# Bonsai - OpenBIM Blender Add-on
-# Copyright (C) 2026
-#
-# This file is part of Bonsai.
-#
-# Bonsai is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Bonsai is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was generated with the assistance of an AI coding tool.
-
-"""Bonsai parametric array service.
-
-Top-level array-domain helpers. The ``BBIM_Array`` pset on a parent ``IfcElement``
-holds the list of layers; each layer holds the GUIDs of its child replicas. These
-helpers navigate that graph and manage the Blender-side CHILD_OF constraint that
-pins children to the parent's matrix_world."""
-
-from __future__ import annotations
-
-import json
-from collections.abc import Generator
-from typing import TYPE_CHECKING, Any
-
-import bpy
-import ifcopenshell
-import ifcopenshell.util.element
-
-import bonsai.core.tool
-import bonsai.tool as tool
-
-if TYPE_CHECKING:
-    from ifcopenshell import entity_instance
-
-
-class Array(bonsai.core.tool.Array):
-    @classmethod
-    def bake_children_transform(cls, parent_element: entity_instance, item: int) -> None:
-        modifier_data = list(cls.get_modifiers_data(parent_element))[item]
-        children = cls.get_children_objects(modifier_data)
-        for child in children:
-            constraint = next((c for c in child.constraints if c.type == "CHILD_OF"), None)
-            if constraint:
-                with bpy.context.temp_override(object=child):
-                    bpy.ops.constraint.apply(constraint=constraint.name, owner="OBJECT")
-
-    @classmethod
-    def constrain_children_to_parent(cls, parent_element: ifcopenshell.entity_instance) -> None:
-        if not (parent_obj := tool.Ifc.get_object(parent_element)):
-            return  # Filtered out, arrayed void, etc
-        assert isinstance(parent_obj, bpy.types.Object)
-        children = cls.get_all_children_objects(parent_element)
-        for child in children:
-            constraint = next((c for c in child.constraints if c.type == "CHILD_OF"), None)
-            if constraint:
-                child.constraints.remove(constraint)
-            constraint = child.constraints.new("CHILD_OF")
-            constraint.name = "BBIM_Array_CHILD_OF"
-            assert isinstance(constraint, bpy.types.ChildOfConstraint)
-            constraint.target = parent_obj
-
-    @classmethod
-    def set_children_lock_state(
-        cls, parent_element: ifcopenshell.entity_instance, item: int, lock_state: bool = True
-    ) -> None:
-        modifier_data = list(cls.get_modifiers_data(parent_element))[item]
-        children = cls.get_children_objects(modifier_data)
-        for child_obj in children:
-            tool.Blender.lock_transform(child_obj, lock_state)
-
-    @classmethod
-    def remove_constraints(cls, parent_element: ifcopenshell.entity_instance) -> None:
-        children = cls.get_all_children_objects(parent_element)
-        for child in children:
-            constraint = next((c for c in child.constraints if c.type == "CHILD_OF"), None)
-            if constraint:
-                child.constraints.remove(constraint)
-
-    @classmethod
-    def get_all_objects(cls, parent_element: ifcopenshell.entity_instance) -> list[bpy.types.Object]:
-        parent_obj = tool.Ifc.get_object(parent_element)
-        assert isinstance(parent_obj, bpy.types.Object)
-        children_objects = list(cls.get_all_children_objects(parent_element))
-        array_objects = [parent_obj] + children_objects  # We ensure the parent is at index 0
-        return array_objects
-
-    @classmethod
-    def get_all_children_objects(
-        cls, parent_element: ifcopenshell.entity_instance
-    ) -> Generator[bpy.types.Object, None, None]:
-        for array_modifier in cls.get_modifiers_data(parent_element):
-            yield from cls.get_children_objects(array_modifier)
-
-    @classmethod
-    def get_parent_element(cls, element: entity_instance) -> entity_instance | None:
-        """Inverse of ``get_all_children_objects``: resolve an array element
-        back to its parent entity. Returns ``None`` when the element isn't
-        part of a Bonsai parametric array, or the stored Parent GUID does
-        not resolve in the current file (this is a data-integrity warning
-        and is logged to the console)."""
-        pset = ifcopenshell.util.element.get_pset(element, "BBIM_Array")
-        if not pset:
-            return None
-        parent_guid = pset["Parent"]
-        try:
-            return tool.Ifc.get().by_guid(parent_guid)
-        except RuntimeError:
-            print(
-                f"BBIM_Array.Parent GUID {parent_guid!r} on {element} does not resolve "
-                f"in the current file — array integrity may be broken."
-            )
-            return None
-
-    @classmethod
-    def get_parent_object(cls, element: entity_instance) -> bpy.types.Object | None:
-        parent_element = cls.get_parent_element(element)
-        if parent_element is None:
-            return None
-        return tool.Ifc.get_object(parent_element)
-
-    @classmethod
-    def get_modifiers_data(cls, parent_element: ifcopenshell.entity_instance) -> Generator[dict[str, Any], None, None]:
-        array_pset = ifcopenshell.util.element.get_pset(parent_element, "BBIM_Array")
-        yield from json.loads(array_pset["Data"])
-
-    @classmethod
-    def get_children_objects(cls, modifier_data: dict[str, Any]) -> Generator[bpy.types.Object, None, None]:
-        child_guid: str
-        for child_guid in modifier_data["children"]:
-            child_obj = tool.Blender.get_object_from_guid(child_guid)
-            if child_obj:
-                yield child_obj
-
-    @classmethod
-    def get_array_root_guid(cls, element: entity_instance) -> str:
-        """Walk ``BBIM_Array.Parent`` upwards and return the topmost ancestor's
-        GlobalId. For an element with no ``BBIM_Array`` pset (independent
-        window, never arrayed, or former-child after the apply path), returns
-        the element's own GlobalId — its "family" is just itself."""
-        current = element
-        seen: set[str] = set()
-        while True:
-            pset = ifcopenshell.util.element.get_pset(current, "BBIM_Array")
-            parent_guid = pset.get("Parent") if pset else None
-            if not parent_guid or parent_guid == current.GlobalId or parent_guid in seen:
-                return current.GlobalId
-            seen.add(parent_guid)
-            try:
-                current = tool.Ifc.get().by_guid(parent_guid)
-            except RuntimeError:
-                return current.GlobalId
-
-    @classmethod
-    def get_parametric_propagation_targets(cls, element: entity_instance) -> list[entity_instance]:
-        """Type-occurrences that should receive parametric updates when
-        ``element`` is edited.
-
-        Returns occurrences in ``element``'s Bonsai array family. When
-        ``element`` is not part of any array, returns the type-occurrence
-        peers that are likewise free of ``BBIM_Array`` (preserving the
-        bulk-edit-by-type UX for standalone parametric elements). An
-        occurrence whose ``BBIM_Array`` root differs from ``element``'s root
-        is excluded — that is the "independent former child" case the array
-        apply path produces."""
-        occurrences = tool.Ifc.get_all_element_occurrences(element)
-        element_pset = ifcopenshell.util.element.get_pset(element, "BBIM_Array")
-        if not element_pset:
-            return [o for o in occurrences if not ifcopenshell.util.element.get_pset(o, "BBIM_Array")]
-        element_root = cls.get_array_root_guid(element)
-        return [o for o in occurrences if cls.get_array_root_guid(o) == element_root]
-
-    @classmethod
-    def get_child_layer_index(cls, child_element: entity_instance) -> int | None:
-        """Index of the layer that produced ``child_element``, or ``None``
-        if the child is unparented, missing from the parent's data, or the
-        parent's pset is unreadable. Total: never raises."""
-        pset = ifcopenshell.util.element.get_pset(child_element, "BBIM_Array")
-        if not pset:
-            return None
-        parent_guid = pset.get("Parent")
-        if not parent_guid or parent_guid == child_element.GlobalId:
-            return None
-        try:
-            parent_element = tool.Ifc.get().by_guid(parent_guid)
-        except RuntimeError:
-            return None
-        data_text = ifcopenshell.util.element.get_pset(parent_element, "BBIM_Array", "Data")
-        if not data_text:
-            return None
-        try:
-            layers = json.loads(data_text)
-        except (ValueError, TypeError):
-            return None
-        child_guid = child_element.GlobalId
-        for i, layer in enumerate(layers):
-            if child_guid in layer.get("children", []):
-                return i
-        return None
@@ -15,13 +15,12 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was modified with the assistance of an AI coding tool.

 from __future__ import annotations

 import contextlib
 import importlib
+import json
 import os
 import platform
 import subprocess
@@ -29,7 +28,7 @@ import sys
 import tempfile
 import traceback
 import types
-from collections.abc import Callable, Generator, Iterable, Mapping, Sequence, Sized
+from collections.abc import Callable, Generator, Iterable, Sequence, Sized
 from datetime import datetime
 from functools import cache, lru_cache
 from pathlib import Path
@@ -46,6 +45,7 @@ from typing import (

 import bmesh
 import bpy
+import ifcopenshell.api
 import ifcopenshell.util.element
 import numpy as np
 import numpy.typing as npt
@@ -55,12 +55,12 @@ from mathutils import Matrix, Vector
 import bonsai.bim
 import bonsai.core.tool
 import bonsai.tool as tool
+from bonsai.bim.ifc import IFC_CONNECTED_TYPE

 if TYPE_CHECKING:
    import bpy.stub_internal.rna_enums as rna_enums
    from sun_position.properties import SunPosProperties

-    from bonsai.bim.ifc import IFC_CONNECTED_TYPE
    from bonsai.bim.module.attribute.prop import BIMAttributeProperties
    from bonsai.bim.module.constraint.prop import (
        BIMConstraintProperties,
@@ -97,19 +97,6 @@ VIEWPORT_ATTRIBUTES = [

 OBJECT_DATA_TYPE = Union[bpy.types.Mesh, bpy.types.Curve, bpy.types.Camera]

-_RAILING_MODIFIER_IFC_CLASSES = ("IfcRailing", "IfcRailingType")
-_STAIR_MODIFIER_IFC_CLASSES = (
-    "IfcStairFlight",
-    "IfcStairFlightType",
-    "IfcMember",
-    "IfcMemberType",
-    "IfcStair",
-    "IfcStairType",
-)
-_WINDOW_MODIFIER_IFC_CLASSES = ("IfcWindow", "IfcWindowType", "IfcWindowStyle")
-_DOOR_MODIFIER_IFC_CLASSES = ("IfcDoor", "IfcDoorType", "IfcDoorStyle")
-_ROOF_MODIFIER_IFC_CLASSES = ("IfcRoof", "IfcRoofType")
-

 class Blender(bonsai.core.tool.Blender):
    OBJECT_TYPES_THAT_SUPPORT_EDIT_MODE = ("MESH", "CURVE", "SURFACE", "META", "FONT", "LATTICE", "ARMATURE")
@@ -428,189 +415,6 @@ class Blender(bonsai.core.tool.Blender):
        with bpy.context.temp_override(**cls.get_viewport_context()):
            bpy.ops.wm.tool_set_by_id(name=tool_name)

-    @classmethod
-    def are_viewport_gizmos_enabled(cls) -> bool:
-        """Central gate every Bonsai gizmo poll / decorator draw checks before
-        rendering. Centralises the read of
-        ``gizmos.draw_gizmos_in_3d_viewport`` from addon preferences."""
-        return cls.get_addon_preferences().gizmos.draw_gizmos_in_3d_viewport
-
-    class DecoratorColors(NamedTuple):
-        selected: tuple
-        unselected: tuple
-        special: tuple
-        error: tuple
-        background: tuple
-
-    @classmethod
-    def get_decorator_colors(cls) -> Blender.DecoratorColors:
-        """The five ``decorator_color_*`` fields read together so each viewport
-        decorator's draw callback resolves them in one call instead of five."""
-        prefs = cls.get_addon_preferences()
-        return cls.DecoratorColors(
-            selected=prefs.decorator_color_selected,
-            unselected=prefs.decorator_color_unselected,
-            special=prefs.decorator_color_special,
-            error=prefs.decorator_color_error,
-            background=prefs.decorator_color_background,
-        )
-
-    class ViewportDecorator:
-        """Shared ``SpaceView3D.draw_handler_add`` lifecycle for feature decorators.
-
-        Single-handler subclasses set ``draw_method`` (default ``"draw"``); the
-        handler binds at ``POST_VIEW``. Multi-handler subclasses set
-        ``draw_methods`` to a tuple of ``(method_name, phase)`` pairs; when it
-        is non-``None`` it supersedes ``draw_method``.
-
-        Decorators whose ``install`` must accept extra arguments (e.g. a callback
-        or a precomputed bmesh) override ``install`` themselves."""
-
-        draw_method: str = "draw"
-        draw_methods: tuple[tuple[str, str], ...] | None = None
-
-        def __init_subclass__(cls, **kwargs):
-            super().__init_subclass__(**kwargs)
-            cls.handlers = []
-            cls.is_installed = False
-            # Fail loudly at class-definition time if draw_method / draw_methods
-            # names an attribute the class doesn't expose. Without this, a typo
-            # only surfaces on the first redraw — as a silent missing-attribute
-            # handler — which may be far from the offending declaration.
-            method_names = (
-                tuple(name for name, _phase in cls.draw_methods) if cls.draw_methods is not None else (cls.draw_method,)
-            )
-            for name in method_names:
-                if getattr(cls, name, None) is None:
-                    raise TypeError(f"{cls.__name__}: draw method {name!r} is declared but not defined on the class")
-
-        @classmethod
-        def install(cls, context: bpy.types.Context) -> None:
-            if cls.is_installed:
-                cls.uninstall()
-            handler = cls()
-            bindings = cls.draw_methods if cls.draw_methods is not None else ((cls.draw_method, "POST_VIEW"),)
-            # Rollback partial registrations on any draw_handler_add failure, so
-            # cls.handlers never ends up holding a half-installed set.
-            added: list = []
-            try:
-                for method_name, phase in bindings:
-                    added.append(
-                        bpy.types.SpaceView3D.draw_handler_add(
-                            getattr(handler, method_name), (context,), "WINDOW", phase
-                        )
-                    )
-            except Exception:
-                for h in added:
-                    try:
-                        bpy.types.SpaceView3D.draw_handler_remove(h, "WINDOW")
-                    except ValueError:
-                        pass
-                raise
-            cls.handlers = added
-            cls.is_installed = True
-
-        @classmethod
-        def uninstall(cls) -> None:
-            for h in cls.handlers:
-                try:
-                    bpy.types.SpaceView3D.draw_handler_remove(h, "WINDOW")
-                except ValueError:
-                    pass
-            cls.handlers.clear()
-            cls.is_installed = False
-
-        @staticmethod
-        def _lookup_active_instance(gizmo_cls: type, context: bpy.types.Context) -> Optional[Any]:
-            """Return the live ``GizmoGroup`` instance registered under
-            ``context.region``, or ``None`` if there isn't one. The per-region
-            weakref dict on the gizmo class is populated by ``setup()``; multi-
-            viewport setups put one entry per region in it so each region's
-            decorator sees only its own region's hover state."""
-            instances = getattr(gizmo_cls, "_active_instances", None)
-            if not instances:
-                return None
-            region = getattr(context, "region", None)
-            if region is None:
-                return None
-            ref = instances.get(region.as_pointer())
-            if ref is None:
-                return None
-            return ref()
-
-        def _cursor_icon_hovered(self, gizmo_cls: type, attr_name: str, context: bpy.types.Context) -> bool:
-            """True iff the gizmo group instance in the current region exposes a gizmo
-            under ``attr_name`` that reports as highlighted. Any access exception is
-            swallowed so a transient bpy-state hiccup never breaks the draw loop."""
-            inst = self._lookup_active_instance(gizmo_cls, context)
-            if inst is None:
-                return False
-            try:
-                return bool(getattr(inst, attr_name).is_highlight)
-            except (AttributeError, ReferenceError):
-                return False
-
-        @classmethod
-        def sync_all(
-            cls,
-            context: bpy.types.Context,
-            enabled: Mapping[type[Blender.ViewportDecorator], bool],
-        ) -> None:
-            """Drive each listed decorator to its desired install state in one call.
-
-            Each entry whose value is ``True`` ends up installed; each entry whose
-            value is ``False`` ends up uninstalled. Pass ``True`` for always-on
-            overlays so they survive subsequent file loads."""
-            for decorator_cls, should_install in enabled.items():
-                if should_install:
-                    decorator_cls.install(context)
-                else:
-                    decorator_cls.uninstall()
-
-    @classmethod
-    def is_view_top_down(cls, context: bpy.types.Context, threshold: float = 0.9659) -> bool:
-        """True when the viewport camera is looking ~straight down (or up) the world Z axis.
-
-        Default threshold of 0.9659 = cos(15°) — a 15° tilt cone around ±world Z.
-        Above the threshold the world-Z axis projects to a small fraction of its
-        true length on screen, so callers that lay icons or markers out along
-        world Z should switch to a screen-space offset and any gizmo whose intent
-        is specifically "vertical" loses its visual cue. The cone is kept narrow
-        so vertical-intent gizmos stay visible across the typical orbit range of
-        3D viewport work and drop out only near genuine plan view."""
-        rv3d = context.region_data
-        if rv3d is None:
-            return False
-        view_forward = Vector(rv3d.view_matrix.inverted().col[2][:3]).normalized()
-        return abs(view_forward.z) > threshold
-
-    @classmethod
-    def top_down_factor(cls, context: bpy.types.Context, threshold: float = 0.9659) -> float:
-        """Continuous 0–1 ramp matching ``is_view_top_down``'s cone: 0 outside the
-        cone, ramping linearly to 1 at strict alignment with world Z. Callers that
-        want a proportional effect (an icon-stack lift growing as the view
-        approaches plan) use this in place of the boolean to avoid a one-frame
-        visual jump as the camera crosses the threshold."""
-        rv3d = context.region_data
-        if rv3d is None:
-            return 0.0
-        view_forward = Vector(rv3d.view_matrix.inverted().col[2][:3]).normalized()
-        alignment = abs(view_forward.z)
-        if alignment <= threshold:
-            return 0.0
-        return (alignment - threshold) / (1.0 - threshold)
-
-    @classmethod
-    def get_screen_up_world(cls, context: bpy.types.Context) -> Vector:
-        """World-space direction corresponding to the camera's up axis (screen-vertical).
-
-        Returns ``+Y`` when region data is unavailable so callers can compute an
-        offset without a guard branch."""
-        rv3d = context.region_data
-        if rv3d is None:
-            return Vector((0.0, 1.0, 0.0))
-        return Vector(rv3d.view_matrix.inverted().col[1][:3]).normalized()
-
    @classmethod
    def get_shader_editor_context(cls) -> Union[dict[str, Any], None]:
        for screen in bpy.data.screens:
@@ -680,13 +484,9 @@ class Blender(bonsai.core.tool.Blender):

    @classmethod
    def update_all_viewports(cls, context: bpy.types.Context | None = None) -> None:
-        """Tag every visible 3D viewport for redraw. Silent no-op when no
-        screen attached (background mode, plug-out, mid-load_post)."""
        context = context or bpy.context
-        screen = getattr(context, "screen", None)
-        if screen is None:
-            return
-        for area in screen.areas:
+        assert context.screen
+        for area in context.screen.areas:
            if area.type == "VIEW_3D":
                area.tag_redraw()

@@ -835,11 +635,10 @@ class Blender(bonsai.core.tool.Blender):
        op_text = "" if ui_context == "TOOL_HEADER" else text
        modifier_icon, modifier_str = cls.KEY_MODIFIERS.get(modifier, ("NONE", ""))

+        row = layout if ui_context == "TOOL_HEADER" else layout.row(align=True)
        module = sys.modules[module_name]
        icon_previews: Union[bpy.utils.previews.ImagePreviewCollection, None]
        icon_previews = getattr(module, "custom_icon_previews", None)
-
-        row = layout if ui_context == "TOOL_HEADER" else layout.row(align=True)
        if icon_previews:
            custom_icon = icon_previews.get(text.upper().replace(" ", "_"), icon_previews["IFC"]).icon_id
            op = row.operator(operator_to_use, text=op_text, icon_value=custom_icon)
@@ -847,7 +646,6 @@ class Blender(bonsai.core.tool.Blender):
            op = row.operator(operator_to_use, text=op_text)
        if ui_context != "TOOL_HEADER":
            row.label(text="", icon=modifier_icon)
-            row.separator(factor=1)
            row.label(text="", icon=f"EVENT_{key}")

        if operator_to_use == hotkey_operator:
@@ -1332,74 +1130,6 @@ class Blender(bonsai.core.tool.Blender):
        return True

    class Modifier:
-        # ----------------------------------------------------------------------
-        # FIXME(PR5): backward-compat shims for callers still using the
-        # pre-refactor API. The is_<type> predicates now live on tool.Parametric;
-        # the Array helper bag now lives on tool.Array. PR4 migrates each caller;
-        # this whole shim block is removed in PR5's cleanup.
-        # ----------------------------------------------------------------------
-
-        @classmethod
-        def is_door(cls, element: entity_instance) -> bool:
-            return tool.Parametric.is_door(element)
-
-        @classmethod
-        def is_railing(cls, element: entity_instance) -> bool:
-            return tool.Parametric.is_railing(element)
-
-        @classmethod
-        def is_roof(cls, element: entity_instance) -> bool:
-            return tool.Parametric.is_roof(element)
-
-        @classmethod
-        def is_stair(cls, element: entity_instance) -> bool:
-            return tool.Parametric.is_stair(element)
-
-        @classmethod
-        def is_wall(cls, element: entity_instance) -> bool:
-            return tool.Parametric.is_wall(element)
-
-        @classmethod
-        def is_window(cls, element: entity_instance) -> bool:
-            return tool.Parametric.is_window(element)
-
-        class Array:
-            @classmethod
-            def bake_children_transform(cls, parent_element: ifcopenshell.entity_instance, item: int) -> None:
-                tool.Array.bake_children_transform(parent_element, item)
-
-            @classmethod
-            def constrain_children_to_parent(cls, parent_element: ifcopenshell.entity_instance) -> None:
-                tool.Array.constrain_children_to_parent(parent_element)
-
-            @classmethod
-            def get_all_children_objects(cls, parent_element: ifcopenshell.entity_instance) -> list:
-                return tool.Array.get_all_children_objects(parent_element)
-
-            @classmethod
-            def get_all_objects(cls, parent_element: ifcopenshell.entity_instance) -> list:
-                return tool.Array.get_all_objects(parent_element)
-
-            @classmethod
-            def get_children_objects(cls, modifier_data: dict) -> list:
-                return tool.Array.get_children_objects(modifier_data)
-
-            @classmethod
-            def get_modifiers_data(cls, parent_element: ifcopenshell.entity_instance):
-                return tool.Array.get_modifiers_data(parent_element)
-
-            @classmethod
-            def remove_constraints(cls, parent_element: ifcopenshell.entity_instance) -> None:
-                tool.Array.remove_constraints(parent_element)
-
-            @classmethod
-            def set_children_lock_state(
-                cls, parent_element: ifcopenshell.entity_instance, item: int, lock: bool
-            ) -> None:
-                tool.Array.set_children_lock_state(parent_element, item, lock)
-
-        # ----------------------------------------------------------------------
-
        @classmethod
        def try_applying_edit_mode(cls, obj: bpy.types.Object, element: entity_instance) -> bool:
            """Tries to validate the current BIM modifier parameters for the active object
@@ -1407,18 +1137,20 @@ class Blender(bonsai.core.tool.Blender):

            :return: True if an action was taken, False otherwise
            """
-            # roof and railing both finalize then drop into path-edit mode — handle
-            # them before the generic finish dispatch so the path transition runs.
-            if tool.Parametric.is_roof(element):
-                if tool.Parametric.ROOF.is_editing(obj):
-                    tool.Parametric.run_bim_op(tool.Parametric.ROOF.finish_op)
+            if cls.is_roof(element):
+                if cls.is_editing_roof_parameters(obj):
+                    bpy.ops.bim.finish_editing_roof()
                bpy.ops.bim.enable_editing_roof_path()
-            elif tool.Parametric.is_railing(element):
-                if tool.Parametric.RAILING.is_editing(obj):
-                    tool.Parametric.run_bim_op(tool.Parametric.RAILING.finish_op)
+            elif cls.is_railing(element):
+                if cls.is_editing_railing_parameters(obj):
+                    bpy.ops.bim.finish_editing_railing()
                bpy.ops.bim.enable_editing_railing_path()
-            elif feature := tool.Parametric.is_object_editing(obj):
-                tool.Parametric.run_bim_op(feature.finish_op)
+            elif cls.is_editing_stair_parameters(obj):
+                bpy.ops.bim.finish_editing_stair()
+            elif cls.is_editing_door_parameters(obj):
+                bpy.ops.bim.finish_editing_door()
+            elif cls.is_editing_window_parameters(obj):
+                bpy.ops.bim.finish_editing_window()
            else:
                return False
            return True
@@ -1429,80 +1161,68 @@ class Blender(bonsai.core.tool.Blender):

            :return: True if an action was taken, False otherwise
            """
-            # Path-edit modes are distinct from parametric draft modes; handle them first.
            if cls.is_editing_railing_path(obj):
                bpy.ops.bim.cancel_editing_railing_path()
            elif cls.is_editing_roof_path(obj):
                bpy.ops.bim.cancel_editing_roof_path()
-            elif feature := tool.Parametric.is_object_editing(obj):
-                tool.Parametric.run_bim_op(feature.cancel_op)
+            elif cls.is_editing_railing_parameters(obj):
+                bpy.ops.bim.cancel_editing_railing()
+            elif cls.is_editing_door_parameters(obj):
+                bpy.ops.bim.cancel_editing_door()
+            elif cls.is_editing_window_parameters(obj):
+                bpy.ops.bim.cancel_editing_window()
+            elif cls.is_editing_roof_parameters(obj):
+                bpy.ops.bim.cancel_editing_roof()
+            elif cls.is_editing_stair_parameters(obj):
+                bpy.ops.bim.cancel_editing_stair()
            else:
                return False
            return True

        @classmethod
        def is_eligible_for_railing_modifier(cls, obj: bpy.types.Object) -> bool:
-            return tool.Blender.is_object_an_ifc_class(obj, _RAILING_MODIFIER_IFC_CLASSES)
+            return tool.Blender.is_object_an_ifc_class(obj, ("IfcRailing", "IfcRailingType"))

        @classmethod
        def is_eligible_for_stair_modifier(cls, obj: bpy.types.Object) -> bool:
-            return tool.Blender.is_object_an_ifc_class(obj, _STAIR_MODIFIER_IFC_CLASSES)
+            return tool.Blender.is_object_an_ifc_class(
+                obj, ("IfcStairFlight", "IfcStairFlightType", "IfcMember", "IfcMemberType", "IfcStair", "IfcStairType")
+            )

        @classmethod
        def is_eligible_for_window_modifier(cls, obj: bpy.types.Object) -> bool:
-            return tool.Blender.is_object_an_ifc_class(obj, _WINDOW_MODIFIER_IFC_CLASSES)
+            return tool.Blender.is_object_an_ifc_class(obj, ("IfcWindow", "IfcWindowType", "IfcWindowStyle"))

        @classmethod
        def is_eligible_for_door_modifier(cls, obj: bpy.types.Object) -> bool:
-            return tool.Blender.is_object_an_ifc_class(obj, _DOOR_MODIFIER_IFC_CLASSES)
+            return tool.Blender.is_object_an_ifc_class(obj, ("IfcDoor", "IfcDoorType", "IfcDoorStyle"))

        @classmethod
        def is_eligible_for_roof_modifier(cls, obj: bpy.types.Object) -> bool:
-            return tool.Blender.is_object_an_ifc_class(obj, _ROOF_MODIFIER_IFC_CLASSES)
+            return tool.Blender.is_object_an_ifc_class(obj, ("IfcRoof", "IfcRoofType"))

        @classmethod
-        def is_array_child(cls, element: entity_instance) -> bool:
-            """True if element is a CHILD of a Bonsai parametric array.
-
-            Children are managed replicas regenerated from the parent's pset —
-            their parametric attributes (door dimensions, wall lengths, …) are
-            overwritten on the next ``regenerate_array``. Parametric gizmo
-            groups skip children via this predicate in ``poll``.
-
-            This sits on a different axis from ``tool.Parametric.is_array``:
-            cardinality (parent vs child) is orthogonal to feature kind, and
-            an arrayed wall fires both ``is_wall`` and ``is_array`` on the
-            same element."""
-            if element is None:
-                return False
-            pset = ifcopenshell.util.element.get_pset(element, "BBIM_Array")
-            if not pset:
-                return False
-            parent_guid = pset.get("Parent")
-            return parent_guid is not None and parent_guid != element.GlobalId
+        def is_railing(cls, element: entity_instance) -> bool:
+            return tool.Pset.get_element_pset(element, "BBIM_Railing")

        @classmethod
-        def is_slab(cls, element: entity_instance) -> bool:
-            """A slab is host-eligible for the parametric add-opening gizmo if
-            it is an IfcSlab with LAYER3 usage.
-
-            Slabs carry no proprietary BBIM_Slab pset — their parametric state
-            lives in standard IFC (extrusion depth, IfcMaterialLayerSetUsage
-            with LayerSetDirection AXIS3). Any LAYER3 slab qualifies."""
-            if element is None or not element.is_a("IfcSlab"):
-                return False
-            return tool.Model.get_usage_type(element) == "LAYER3"
+        def is_roof(cls, element: entity_instance) -> bool:
+            return tool.Pset.get_element_pset(element, "BBIM_Roof")

        @classmethod
-        def is_pipe_segment(cls, element: entity_instance) -> bool:
-            return element is not None and element.is_a("IfcPipeSegment")
+        def is_window(cls, element: entity_instance) -> bool:
+            return tool.Pset.get_element_pset(element, "BBIM_Window")

        @classmethod
-        def is_duct_segment(cls, element: entity_instance) -> bool:
-            return element is not None and element.is_a("IfcDuctSegment")
+        def is_door(cls, element: entity_instance) -> bool:
+            return tool.Pset.get_element_pset(element, "BBIM_Door")

        @classmethod
-        def is_editing_railing_path(cls, obj: bpy.types.Object) -> bool:
+        def is_stair(cls, element: entity_instance) -> bool:
+            return tool.Pset.get_element_pset(element, "BBIM_Stair")
+
+        @classmethod
+        def is_editing_railing_path(cls, obj: bpy.types.Object):
            props = tool.Model.get_railing_props(obj)
            return props.is_editing_path

@@ -1511,10 +1231,107 @@ class Blender(bonsai.core.tool.Blender):
            props = tool.Model.get_roof_props(obj)
            return props.is_editing_path

+        @classmethod
+        def is_editing_railing_parameters(cls, obj: bpy.types.Object) -> bool:
+            props = tool.Model.get_railing_props(obj)
+            return props.is_editing
+
+        @classmethod
+        def is_editing_roof_parameters(cls, obj: bpy.types.Object) -> bool:
+            props = tool.Model.get_roof_props(obj)
+            return props.is_editing
+
+        @classmethod
+        def is_editing_window_parameters(cls, obj: bpy.types.Object) -> bool:
+            props = tool.Model.get_window_props(obj)
+            return props.is_editing
+
+        @classmethod
+        def is_editing_door_parameters(cls, obj: bpy.types.Object) -> bool:
+            props = tool.Model.get_door_props(obj)
+            return props.is_editing
+
+        @classmethod
+        def is_editing_stair_parameters(cls, obj: bpy.types.Object) -> bool:
+            props = tool.Model.get_stair_props(obj)
+            return props.is_editing
+
        @classmethod
        def is_modifier_with_non_editable_path(cls, element: entity_instance) -> bool:
-            feature = tool.Parametric.find_for_element(element)
-            return bool(feature and feature.has_non_editable_path)
+            return cls.is_stair(element) or cls.is_door(element) or cls.is_window(element)
+
+        class Array:
+            @classmethod
+            def bake_children_transform(cls, parent_element: entity_instance, item: int) -> None:
+                modifier_data = list(cls.get_modifiers_data(parent_element))[item]
+                children = cls.get_children_objects(modifier_data)
+                for child in children:
+                    constraint = next((c for c in child.constraints if c.type == "CHILD_OF"), None)
+                    if constraint:
+                        with bpy.context.temp_override(object=child):
+                            bpy.ops.constraint.apply(constraint=constraint.name, owner="OBJECT")
+
+            @classmethod
+            def constrain_children_to_parent(cls, parent_element: ifcopenshell.entity_instance) -> None:
+                if not (parent_obj := tool.Ifc.get_object(parent_element)):
+                    return  # Filtered out, arrayed void, etc
+                assert isinstance(parent_obj, bpy.types.Object)
+                children = cls.get_all_children_objects(parent_element)
+                for child in children:
+                    constraint = next((c for c in child.constraints if c.type == "CHILD_OF"), None)
+                    if constraint:
+                        child.constraints.remove(constraint)
+                    constraint = child.constraints.new("CHILD_OF")
+                    constraint.name = "BBIM_Array_CHILD_OF"
+                    assert isinstance(constraint, bpy.types.ChildOfConstraint)
+                    constraint.target = parent_obj
+
+            @classmethod
+            def set_children_lock_state(
+                cls, parent_element: ifcopenshell.entity_instance, item: int, lock_state: bool = True
+            ) -> None:
+                modifier_data = list(cls.get_modifiers_data(parent_element))[item]
+                children = cls.get_children_objects(modifier_data)
+                for child_obj in children:
+                    Blender.lock_transform(child_obj, lock_state)
+
+            @classmethod
+            def remove_constraints(cls, parent_element: ifcopenshell.entity_instance) -> None:
+                children = cls.get_all_children_objects(parent_element)
+                for child in children:
+                    constraint = next((c for c in child.constraints if c.type == "CHILD_OF"), None)
+                    if constraint:
+                        child.constraints.remove(constraint)
+
+            @classmethod
+            def get_all_objects(cls, parent_element: ifcopenshell.entity_instance) -> list[bpy.types.Object]:
+                parent_obj = tool.Ifc.get_object(parent_element)
+                assert isinstance(parent_obj, bpy.types.Object)
+                children_objects = list(cls.get_all_children_objects(parent_element))
+                array_objects = [parent_obj] + children_objects  # We ensure the parent is at index 0
+                return array_objects
+
+            @classmethod
+            def get_all_children_objects(
+                cls, parent_element: ifcopenshell.entity_instance
+            ) -> Generator[bpy.types.Object, None, None]:
+                for array_modifier in cls.get_modifiers_data(parent_element):
+                    yield from cls.get_children_objects(array_modifier)
+
+            @classmethod
+            def get_modifiers_data(
+                cls, parent_element: ifcopenshell.entity_instance
+            ) -> Generator[dict[str, Any], None, None]:
+                array_pset = ifcopenshell.util.element.get_pset(parent_element, "BBIM_Array")
+                yield from json.loads(array_pset["Data"])
+
+            @classmethod
+            def get_children_objects(cls, modifier_data: dict[str, Any]) -> Generator[bpy.types.Object, None, None]:
+                child_guid: str
+                for child_guid in modifier_data["children"]:
+                    child_obj = tool.Blender.get_object_from_guid(child_guid)
+                    if child_obj:
+                        yield child_obj

    class Attribute:
        @classmethod
--- a/Show More
+++ b/Show More
@@ -1 +1 @@
 .8.6
 .8.5