Closes #8063 : ordinate dimensioning

Generated with the assistance of an AI coding tool.
Closes #7775 : have a BBIM_Dimension.SuppressZeroFeet like there is a BBIM_Dimension.SuppressZeroInches
2026-08-06 16:01:36 +00:00 · 2026-05-15 10:20:02 -05:00 · 2026-05-15 08:09:01 -05:00 · 2026-05-15 07:48:03 -05:00 · 2026-05-15 07:28:29 -05:00 · 2026-05-08 15:00:30 +02:00
363 changed files with 21185 additions and 2371 deletions
@@ -0,0 +1,95 @@
+#!/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@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.23
        with:
          key: mac-${{ matrix.arch }}

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

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.23
        with:
          key: ubuntu-22.04-${{ runner.arch }}

@@ -9,6 +9,13 @@ 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
@@ -17,7 +24,6 @@ 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
@@ -45,10 +51,10 @@ jobs:
      - name: Unpack Dependencies
        run: |
          cd build
-          python3 ../nix/cache_dependencies.py unpack
+          uv run ../nix/cache_dependencies.py unpack

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.23
        with:
          key: ubuntu-22.04-${{ runner.arch }}-rockylinux9

@@ -56,7 +62,7 @@ jobs:
        shell: bash
        run: |
          set -o pipefail
-          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
+          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

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

      - name: Commit and Push Changes to Build Repository
        run: |
@@ -9,6 +9,13 @@ 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
@@ -17,7 +24,6 @@ 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
@@ -45,10 +51,10 @@ jobs:
      - name: Unpack Dependencies
        run: |
          cd build
-          python3 ../nix/cache_dependencies.py unpack
+          uv run ../nix/cache_dependencies.py unpack

      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.23
        with:
          key: ubuntu-22.04-${{ runner.arch }}-rockylinux9

@@ -56,7 +62,7 @@ jobs:
        shell: bash
        run: |
          set -o pipefail
-          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
+          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

      - name: Upload Build Logs
        if: always()
@@ -71,7 +77,7 @@ jobs:
      - name: Pack Dependencies
        run: |
          cd build
-          python3 ../nix/cache_dependencies.py pack
+          uv run ../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@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.23
        with:
          key: win-${{ matrix.arch }}
          # Windows ccache needs ~1GB
@@ -109,7 +109,7 @@ jobs:
          # Ensure Bonsai and ifcsverchok enable/disable works before uploading to extensions repo.

          # Download Blender.
-          wget -q -O blender.tar.xz https://download.blender.org/release/Blender5.0/blender-5.0.1-linux-x64.tar.xz
+          wget -q -O blender.tar.xz https://download.blender.org/release/Blender5.1/blender-5.1.0-linux-x64.tar.xz
          tar -xf blender.tar.xz

          # Setup Blender.
@@ -122,7 +122,7 @@ jobs:
          pip install -r requirements.txt
          python setup_extensions_repo.py --last-tag
          cd ..
-          bonsai_zip="$(pwd)/$(ls bonsai_unstable_repo/bonsai_py311*-linux-x64.zip)"
+          bonsai_zip="$(pwd)/$(ls bonsai_unstable_repo/bonsai_py313*-linux-x64.zip)"

          # Install Bonsai.
          blender --command extension install-file -r user_default -e $bonsai_zip
@@ -24,7 +24,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        pyver: [py311, py312]
+        pyver: [py311, py312, py313]
        config:
          - {
            name: "Windows Build",
@@ -42,6 +42,11 @@ 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
@@ -0,0 +1,35 @@
+name: ci-ifcedit-pypi
+
+on:
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.11'
+      - name: Compile
+        run: |
+          pip install build
+          cd src/ifcedit &&
+          make dist IS_STABLE=TRUE
+      - name: Publish a Python distribution to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/ifcedit/dist
@@ -0,0 +1,36 @@
+name: ci-ifcmcp-pypi
+
+on:
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.11'
+      - name: Compile
+        run: |
+          pip install build
+          cd src/ifcmcp &&
+          make dist IS_STABLE=TRUE
+      - name: Publish a Python distribution to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/ifcmcp/dist
+          verbose: true
@@ -24,7 +24,7 @@ jobs:
    if: |
      github.repository == 'IfcOpenShell/IfcOpenShell'
    steps:
-      - uses: mamba-org/setup-micromamba@v2 # https://github.com/mamba-org/setup-micromamba
+      - uses: mamba-org/setup-micromamba@v3 # https://github.com/mamba-org/setup-micromamba
        with:
          environment-name: test-env
          create-args: >-
@@ -84,7 +84,7 @@ jobs:
        run: |
          curl -L https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX10.13.sdk.tar.xz | tar -xvJf - -C /Users/runner/work/

-      - uses: mamba-org/setup-micromamba@v2 # https://github.com/mamba-org/setup-micromamba
+      - uses: mamba-org/setup-micromamba@v3 # https://github.com/mamba-org/setup-micromamba
        with:
          environment-name: test-env
          create-args: >-
@@ -35,7 +35,7 @@ jobs:

    -
      name: ccache
-      uses: hendrikmuhs/ccache-action@v1.2.20
+      uses: hendrikmuhs/ccache-action@v1.2.23

    - 
      name: Build ifcopenshell
@@ -0,0 +1,35 @@
+name: ci-ifcquery-pypi
+
+on:
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.11'
+      - name: Compile
+        run: |
+          pip install build
+          cd src/ifcquery &&
+          make dist IS_STABLE=TRUE
+      - name: Publish a Python distribution to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages_dir: src/ifcquery/dist
@@ -1,4 +1,4 @@
-name: ci-black-formatting
+name: ci-lint

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

      # black doesn't catch all syntax errors, so we check them explicitly.
      - name: Check syntax errors
@@ -57,6 +58,13 @@ 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: |
@@ -87,8 +95,7 @@ jobs:
            echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          }

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

          exit $ERROR
        continue-on-error: true
@@ -105,4 +112,7 @@ jobs:
          if [ "${{ 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 $ERROR
@@ -0,0 +1,46 @@
+name: Release Pyodide WASM Wheel
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout IfcOpenShell
+        uses: actions/checkout@v6
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+
+      - name: Build wheel
+        working-directory: pyodide
+        run: uv run pack_wheel.py --build
+
+      - name: Find wheel
+        id: wheel
+        run: |
+          WHEEL=$(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}"
@@ -79,7 +79,7 @@ jobs:
          libhdf5-dev libcgal-dev libeigen3-dev
          
      - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.23
        with:
          key: ubuntu-22.04-${{ runner.arch }}

@@ -1,36 +0,0 @@
-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
@@ -0,0 +1,65 @@
+name: Deploy AI chat App to static page repo
+
+permissions:
+  id-token: write
+  pages: write
+
+on:
+  push:
+    paths:
+      - 'src/ifcchat/**'
+      - '.github/workflows/publish-aichat-app.yaml'
+    branches:
+      - v0.8.0
+  workflow_dispatch:
+
+jobs:
+  activate:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'IfcOpenShell/IfcOpenShell'
+    steps:
+    - name: Set env
+      run: echo ok go
+      
+  build:
+    needs: activate
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout (recursive)
+        uses: actions/checkout@v6
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - name: Checkout intermediate Pages repo
+        uses: actions/checkout@v6
+        with:
+          repository: IfcOpenShell/aichat_ifcopenshell_org_static_html
+          ref: gh-pages
+          path: output
+          token: ${{ secrets.WEBSITE_PUBLISH }}
+      - name: Sync demo app into target subfolder
+        run: |
+          rsync -av --delete --exclude='.git/' src/ifcchat/ output/
+      - name: Setup Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.x"
+      - name: Download wheels
+        working-directory: output/
+        run: |
+          pip download ifcquery==0.8.5 ifcopenshell-mcp==0.8.5 ifcedit==0.8.5 lark==1.3.1 isodate==0.7.2 --no-deps -d ./dist
+      - name: Commit and push if changed
+        working-directory: output
+        run: |
+          git config --global user.name 'IfcOpenBot'
+          git config --global user.email 'IfcOpenBot@users.noreply.github.com'
+
+          git add .
+          if git diff --cached --quiet; then
+            echo "No changes to commit"
+            exit 0
+          fi
+
+          git commit  -m "$(git log --oneline -1)"
+          git push origin gh-pages
@@ -0,0 +1,16 @@
+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 }}
@@ -1,4 +1,4 @@
-name: Deploy Pyodide Demo App to GitHub Pages
+name: Deploy Pyodide Demo App to static page repo

 permissions:
  id-token: write
@@ -11,6 +11,7 @@ on:
      - '.github/workflows/publish-pyodide-demo-app.yml'
    branches:
      - v0.8.0
+  workflow_dispatch:

 jobs:
  activate:
@@ -30,21 +31,27 @@ jobs:
        with:
          submodules: recursive
          fetch-depth: 0
-      - name: Setup Pages
-        uses: actions/configure-pages@v5
-      - name: Upload static files as artifact
-        id: deployment
-        uses: actions/upload-pages-artifact@v4
+      - name: Checkout intermediate Pages repo
+        uses: actions/checkout@v6
        with:
-          path: src/pyodide/demo-app/
+          repository: IfcOpenShell/wasm_ifcopenshell_org_static_html
+          ref: gh-pages
+          path: output
+          token: ${{ secrets.WEBSITE_PUBLISH }}
+      - name: Sync demo app into target subfolder
+        run: |
+          rsync -av --delete --exclude='.git/' src/pyodide/demo-app/ output/
+      - name: Commit and push if changed
+        working-directory: output
+        run: |
+          git config --global user.name 'IfcOpenBot'
+          git config --global user.email 'IfcOpenBot@users.noreply.github.com'

-  deploy:
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
-      - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4
+          git add .
+          if git diff --cached --quiet; then
+            echo "No changes to commit"
+            exit 0
+          fi
+
+          git commit -m "$(git log --oneline -1)"
+          git push origin gh-pages
@@ -14,6 +14,7 @@
 /src/ifcmax/out/
 /src/ifcwrap/out/
 /src/qtviewer/out/
+/src/ifctester/webapp/public/pyodide/

 /win/BuildDepsCache*.txt

@@ -85,10 +86,11 @@ src/bonsai/bonsai/translations.py
 # bonsai external dependencies (cloned for just ty checks)
 src/bonsai/external_dependencies/

-# bonsai test temp files
+# bonsai test temp/cache files
 src/bonsai/test/files/temp
-src/bonsai/test/files/basic.ifc.cache.blend
-src/bonsai/test/files/basic.ifc.cache.sqlite
+src/bonsai/test/files/*.cache.blend
+src/bonsai/test/files/*.cache.json
+src/bonsai/test/files/*.cache.sqlite

 # bonsai data
 src/bonsai/bonsai/bim/data/build/
@@ -50,11 +50,14 @@ Contents
 | [ifcconvert](https://docs.ifcopenshell.org/ifcconvert.html)                | CLI app to convert IFC to many other formats                          | LGPL-3.0-or-later\* | [![Official](https://img.shields.io/badge/IfcOpenShell.org-Download-70ba35)](https://docs.ifcopenshell.org/ifcconvert/installation.html) [![GitHub](https://img.shields.io/github/v/release/ifcopenshell/ifcopenshell?filter=ifcconvert-*&label=GitHub&color=f6f8fa)](https://github.com/IfcOpenShell/IfcOpenShell/releases?q=ifcconvert&expanded=true)
 | [ifccsv](https://docs.ifcopenshell.org/ifccsv.html)                    | Library and CLI app to export and import schedules from IFC           | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifccsv?label=PyPI&color=006dad)](https://pypi.org/project/ifccsv/) |
 | [ifcdiff](https://docs.ifcopenshell.org/ifcdiff.html)                   | Compare changes between IFC models                                    | LGPL-3.0-or-later   | [![PyPI](https://img.shields.io/pypi/v/ifcdiff?label=PyPI&color=006dad)](https://pypi.org/project/ifcdiff/) |
+| [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)
-| [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) |
+| [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) |
 | [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/) |
-| [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)
+| [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)
 | [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 @@
-0.8.5
+0.8.6
@@ -1,4 +1,6 @@
 #!/usr/bin/python
+# /// script
+# ///
 ###############################################################################
 #                                                                             #
 # This file is part of IfcOpenShell.                                          #
@@ -126,13 +128,7 @@ from collections.abc import Generator, Sequence
 from pathlib import Path
 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
+from typing import Literal, Union

 logger = logging.getLogger(__name__)
 logger.setLevel(logging.INFO)
@@ -1094,10 +1090,19 @@ 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_bin = INSTALL_DIR / f"python-{PYTHON_VERSION}" / "bin" / "python3"
+        python_install = INSTALL_DIR / f"python-{PYTHON_VERSION}"
+        python_bin = python_install / "bin" / "python3"
        # `_ssl` module is present -> we will be able to install `numpy` later
        # to verify IfcOpenShell installation
-        run([str(python_bin), "-c", "import _ssl"])
+        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

    if MAC_CROSS_COMPILE_INTEL:
        assert original_path
@@ -1515,7 +1520,7 @@ 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 wheelthe the
+        # Empty pyproject so it's contents won't affect the resulting wheel
        # otherwise the wheel will use version and dependencies from toml, not setup.py.
        (REPO_PATH / "pyproject.toml").write_text("")

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

@@ -1,6 +1,11 @@
 #!/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.

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

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

-# 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 ${PYODIDE_EMSCRIPTEN_VERSION}
-source emsdk_env.sh
+EMSDK_ROOT="${PYODIDE_XBUILDENV}/emsdk"
+source "${EMSDK_ROOT}/emsdk_env.sh"
 which emcc
-popd
+emcc --version

 mkdir -p packages/ifcopenshell
 VERSION=`cat IfcOpenShell/VERSION`
@@ -0,0 +1,232 @@
+#
+# /// 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()
@@ -2,12 +2,16 @@
 # 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

-REPO_FOLDER = Path(__file__).parent
+# 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


 def get_version() -> str:
@@ -25,6 +29,39 @@ 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(),
@@ -44,4 +81,5 @@ setup(
    },
    # Has to provide extension to get the correct wheel suffix.
    ext_modules=[Extension("ifcopenshell._ifcopenshell_wrapper", sources=[])],
+    cmdclass={"build_ext": UnixBuildExt},
 )
@@ -3,8 +3,9 @@ name = "IfcOpenShell"
 version = "0.0.0"
 dependencies = [
    "black==26.3.1",
-    "ruff==0.15.6",
+    "ruff==0.15.12",
    "poethepoet",
+    "ty==0.0.32",
    "gersemi==0.26.1",
 ]

@@ -28,6 +29,9 @@ 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
@@ -84,7 +88,6 @@ 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"
@@ -96,7 +99,6 @@ 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"
@@ -213,10 +215,7 @@ exclude = [

 [tool.poe.tasks]

-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"]
+ruff = "ruff check"

 black = "black ."

@@ -224,7 +223,7 @@ 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 = ["ty-venv-bonsai", "ty-venv-ios"]
+ty-venv.sequence = ["bonsai-deps", "ty-venv-bonsai", "ty-venv-ios"]

 ty-venv-bonsai.sequence = [
    {cmd = "uv venv src/bonsai/.venv --python=3.11 --allow-existing"},
@@ -236,7 +235,7 @@ 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-main", "ruff-old"]
+format.sequence = ["black", "ruff"]

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

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

 SHELL := sh
-PYTHON:=python3.11
-PIP:=pip3.11
+PYTHON:=python3
+PIP:=pip3
 PATCH:=patch
 SED:=sed -i
 VENV_ACTIVATE:=bin/activate
@@ -48,6 +48,7 @@ VERSION_PATCH:=$(shell cat '../../VERSION' | cut -d '.' -f 3)
 VERSION_DATE:=$(shell date '+%y%m%d')
 LAST_COMMIT_HASH:=$(shell git rev-parse HEAD)
 LAST_COMMIT_DATE:=$(shell git show -s --format=%cI)
+LAST_GIT_BRANCH:=$(shell git rev-parse --abbrev-ref HEAD)
 PYPI_IMP:=cp

 ifdef PYVERSION
@@ -63,6 +64,7 @@ PYNUMBER:=3$(PYMINOR)
 PYPI_VERSION:=3.$(PYMINOR)
 endif # def PYVERSION

+IFCMERGE_VERSION:=2026-04-07

 ifdef PLATFORM
 SUPPORTED_PLATFORMS := linux macos macosm1 win
@@ -239,10 +241,9 @@ endif

 	# required for three-way git merging
 ifeq ($(PLATFORM), win)
-	cd build/bonsai/libs/bin && wget https://github.com/brunopostle/ifcmerge/releases/download/2025-01-26/ifcmerge.zip
-	cd build/bonsai/libs/bin && unzip ifcmerge.zip && rm ifcmerge.zip
+	cd build/bonsai/libs/bin && wget https://github.com/brunopostle/ifcmerge/releases/download/$(IFCMERGE_VERSION)/ifcmerge.exe
 else
-	cd build/bonsai/libs/bin && wget https://raw.githubusercontent.com/brunopostle/ifcmerge/main/ifcmerge && chmod +x ifcmerge
+	cd build/bonsai/libs/bin && wget https://raw.githubusercontent.com/brunopostle/ifcmerge/$(IFCMERGE_VERSION)/ifcmerge && chmod +x ifcmerge
 endif

 	# Generate translations module for Bonsai build
@@ -261,6 +262,7 @@ else
 	$(SED) "s/0.0.0/$(VERSION)-alpha$(VERSION_DATE)/" build/bonsai/blender_manifest.toml
 	$(SED) "s/8888888/$(LAST_COMMIT_HASH)/" build/bonsai/__init__.py
 	$(SED) "s/9999999/$(LAST_COMMIT_DATE)/" build/bonsai/__init__.py
+	$(SED) "s/7777777/$(LAST_GIT_BRANCH)/" build/bonsai/__init__.py
 	$(SED) 's/version = "0.0.0"/version = "$(VERSION)-alpha$(VERSION_DATE)"/' build/pyproject.toml
 endif

@@ -43,6 +43,7 @@ from typing import TYPE_CHECKING, Any, Union

 last_commit_hash = "8888888"
 last_commit_date = "9999999"
+last_git_branch = "7777777"


 def get_last_commit_hash() -> Union[str, None]:
@@ -60,6 +61,15 @@ def get_last_commit_date() -> Union[str, None]:
    return last_commit_date


+def get_git_branch() -> Union[str, None]:
+    # Using this weird way to write 7777777,
+    # so makefile won't accidentally replace it here
+    # we'll be able to distinguish branch from placeholder value.
+    if last_git_branch == str(7_777777):
+        return None
+    return last_git_branch
+
+
 # Accessed from bonsai extension:
 bbim_semver: dict[str, Any] = {}

@@ -125,6 +135,7 @@ def get_debug_info(*, bonsai_failed_to_load: bool = False) -> dict[str, Any]:
        "bonsai_version": bbim_version,
        "bonsai_commit_hash": get_last_commit_hash(),
        "bonsai_commit_date": get_last_commit_date(),
+        "bonsai_git_branch": get_git_branch(),
        "last_actions": last_actions,
        "last_error": last_error,
    }
@@ -251,10 +262,12 @@ if IN_BLENDER:

            global last_commit_hash
            global last_commit_date
+            global last_git_branch
            path = Path(__file__).resolve().parent
            repo = git.Repo(str(path), search_parent_directories=True)
            last_commit_hash = repo.head.object.hexsha
            last_commit_date = repo.head.object.committed_datetime.isoformat()
+            last_git_branch = repo.active_branch.name
        except:
            pass

@@ -0,0 +1,96 @@
+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.
@@ -28,7 +28,7 @@ DATA;
 #21=IFCSIMPLEPROPERTYTEMPLATE('1UDakJ5_f7kBhggNSW4$h5',$,'SymbolsPath','Default symbols SVG',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #22=IFCSIMPLEPROPERTYTEMPLATE('0d53LEtgLDQxnv__NfgH7i',$,'PatternsPath','Default patterns SVG',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #23=IFCSIMPLEPROPERTYTEMPLATE('26qFNMv7nCHgU6Jd7Anga5',$,'ShadingStylesPath','Default shading styles',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
-#24=IFCPROPERTYSETTEMPLATE('0I9merLinF5Ap$aZwaclgm',$,'BBIM_Dimension','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/DIMENSION,IfcAnnotation/RADIUS,IfcAnnotation/DIAMETER,IfcTypeProduct',(#25,#26,#27,#28,#30));
+#24=IFCPROPERTYSETTEMPLATE('0I9merLinF5Ap$aZwaclgm',$,'BBIM_Dimension','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/DIMENSION,IfcAnnotation/RADIUS,IfcAnnotation/DIAMETER,IfcTypeProduct',(#25,#26,#35,#36,#27,#28,#30,#34));
 #25=IFCSIMPLEPROPERTYTEMPLATE('1rL2AbQsXD8RbpoWH5pYOV',$,'ShowDescriptionOnly','Hide the measurement values and show only annotation description',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #26=IFCSIMPLEPROPERTYTEMPLATE('0SVyOfB0rC2xNfdRYf3XvY',$,'SuppressZeroInches','Suppress 0 inch values in dimension annotation text (for example: 12'' - 0" -> 12'')',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #27=IFCSIMPLEPROPERTYTEMPLATE('2bUmj458PBqPAtUoI3MXsb',$,'TextPrefix','Text to add before annotation measurement value',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
@@ -37,6 +37,9 @@ DATA;
 #30=IFCSIMPLEPROPERTYTEMPLATE('2TJn72t_v2cvBUG916Dpev',$,'CustomUnit','Dimension''s custom unit',.P_ENUMERATEDVALUE.,'IfcText',$,#31,$,$,$,.READWRITE.);
 #31=IFCPROPERTYENUMERATION('CustomUnit',(IFCTEXT('Feet and Inches - Fractional'),IFCTEXT('Feet - Decimal'),IFCTEXT('Inches - Fractional'),IFCTEXT('Inches - Decimal'),IFCTEXT('Meters'),IFCTEXT('Decimeters'),IFCTEXT('Centimeters'),IFCTEXT('Millimeters')),$);
 #32=IFCSIMPLEPROPERTYTEMPLATE('0gjJzDYBX8P85qn1xcAOOo',$,'Reverse_List','',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
+#34=IFCSIMPLEPROPERTYTEMPLATE('1Kx4Pm9nR8vBwZqTs2uYeL',$,'Separator','Characters placed between multiple dimension values when CustomUnit has more than one unit selected (default: '' / '')',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
+#35=IFCSIMPLEPROPERTYTEMPLATE('3Nf6Qs1mT0pWxBuCvDyEzA',$,'SuppressZeroFeet','Suppress 0 feet in dimension annotation text (for example: 0'' - 3 1/2" -> 3 1/2")',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
+#36=IFCSIMPLEPROPERTYTEMPLATE('2Rg7Hn5jK4mLpNqOsVwXtY',$,'IsOrdinate','Show accumulated distance from the first vertex instead of individual segment lengths',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #33=IFCSIMPLEPROPERTYTEMPLATE('22TrcxF8jFNB4buSmzjGEF',$,'List_Separator','',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 ENDSEC;
 END-ISO-10303-21;
@@ -45,16 +45,19 @@ from bonsai.bim.module.nest.decorator import NestDecorator

 cwd = os.path.dirname(os.path.realpath(__file__))
 global_subscription_owner = object()
+# Separate owner for per-object msgbus subscriptions (name, active_material_index).
+# Using a dedicated owner allows clearing all per-object subscriptions at once
+# during undo/redo without affecting other global subscriptions.
+object_subscription_owner = object()


 def name_callback(obj: Union[bpy.types.Object, bpy.types.Material], data: str) -> None:
    try:
        obj.name
    except:
-        # The object is invalid but somehow still has a callback. Clear all
-        # msgbus subscriptions to prevent useless further triggers.
-        bpy.msgbus.clear_by_owner(obj)
-        return  # In case the object RNA is gone during an undo / redo operation
+        # The object is invalid but somehow still has a callback.
+        # This can occur during undo/redo when the Python wrapper is stale.
+        return
    # Blender names are up to 63 UTF-8 bytes
    if len(bytes(obj.name, "utf-8")) >= 63:
        return
@@ -189,7 +192,7 @@ def subscribe_to(obj: bpy.types.ID, data_path: str, callback: Callable[[bpy.type
        return
    bpy.msgbus.subscribe_rna(
        key=subscribe_to,
-        owner=obj,
+        owner=object_subscription_owner,
        args=(
            obj,
            data_path,
@@ -316,11 +316,8 @@ class IfcStore:
        del IfcStore.id_map[data["id"]]
        if "guid" in data:
            del IfcStore.guid_map[data["guid"]]
-        obj = IfcStore.get_object_by_name(data["obj"])
-        if obj is None:
-            # obj was just created during this step and didn't existed before.
-            return
-        bpy.msgbus.clear_by_owner(obj)
+        # Note: msgbus subscriptions are cleared globally during
+        # rebuild_element_maps which runs after every undo/redo.

    @staticmethod
    def commit_link_element(data: OperationData) -> None:
@@ -367,10 +364,8 @@ class IfcStore:
        del IfcStore.id_map[data["id"]]
        if "guid" in data:
            del IfcStore.guid_map[data["guid"]]
-        obj = IfcStore.get_object_by_name(data["obj"])
-        # obj might be removed after unlink.
-        if not obj:
-            bpy.msgbus.clear_by_owner(obj)
+        # Note: msgbus subscriptions are cleared globally during
+        # rebuild_element_maps which runs after every undo/redo.

    @staticmethod
    def unlink_element(
@@ -64,8 +64,8 @@ class MaterialCreator:
        mesh: Union[OBJECT_DATA_TYPE, None],
        shape_has_openings: bool,
    ) -> None:
-        if ((rep := getattr(element, "Representation", ...) is not ...) and not rep) or (
-            (rep := getattr(element, "RepresentationMaps", ...) is not ...) and not rep
+        if ((rep := getattr(element, "Representation", ...)) is not ... and not rep) or (
+            (rep := getattr(element, "RepresentationMaps", ...)) is not ... and not rep
        ):
            return

@@ -101,7 +101,7 @@ class AggregateDecorator:
        cls.is_installed = False

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

        shader_info = gpu.types.GPUShaderCreateInfo()
@@ -73,6 +73,22 @@ def poll_related_object(self: "BIMObjectAggregateProperties", related_obj: bpy.t
    return True


+def update_relating_object(self, context):
+    if self.relating_object:
+        ifc_id = tool.Blender.get_object_bim_props(self.relating_object).ifc_definition_id
+        if ifc_id:
+            bpy.ops.bim.aggregate_assign_object(relating_object=ifc_id)
+            bpy.ops.bim.disable_editing_aggregate()
+
+
+def update_related_object(self, context):
+    if self.related_object:
+        ifc_id = tool.Blender.get_object_bim_props(self.related_object).ifc_definition_id
+        if ifc_id:
+            bpy.ops.bim.aggregate_assign_object(related_object=ifc_id)
+            bpy.ops.bim.disable_editing_aggregate()
+
+
 def update_aggregate_decorator(self, context):
    if self.aggregate_decorator:
        AggregateDecorator.install(bpy.context)
@@ -89,12 +105,15 @@ def update_aggregate_mode_decorator(self, context):

 class BIMObjectAggregateProperties(PropertyGroup):
    is_editing: BoolProperty(name="Is Editing")
-    relating_object: PointerProperty(name="Relating Whole", type=bpy.types.Object, poll=poll_relating_object)
+    relating_object: PointerProperty(
+        name="Relating Whole", type=bpy.types.Object, poll=poll_relating_object, update=update_relating_object
+    )
    related_object: PointerProperty(
        name="Related Part",
        description="Related Part, will be used to derive the Relating Object",
        type=bpy.types.Object,
        poll=poll_related_object,
+        update=update_related_object,
    )

    if TYPE_CHECKING:
@@ -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()  # pyright: ignore[reportRedeclaration]
+    ifc_class: bpy.props.StringProperty()
    """Element IFC class."""
-    attribute_name: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    attribute_name: bpy.props.StringProperty()
    """IFC class attribute name."""
-    data_path: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    data_path: bpy.props.StringProperty()
    """Full data path"""
-    preselect_ifc_id: bpy.props.IntProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]
+    preselect_ifc_id: bpy.props.IntProperty(options={"SKIP_SAVE"})
    """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()  # pyright: ignore[reportRedeclaration]
+    ifc_definition_id: bpy.props.IntProperty()

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

    if TYPE_CHECKING:
        is_loaded: bool
@@ -377,6 +377,8 @@ class EnableEditingBoundary(bpy.types.Operator):
            obj = tool.Ifc.get_object(entity)
            if entity and obj:
                setattr(bprops, blender_property, obj)
+        bprops.physical_or_virtual = boundary.PhysicalOrVirtualBoundary or "NOTDEFINED"
+        bprops.internal_or_external = boundary.InternalOrExternalBoundary or "NOTDEFINED"
        return {"FINISHED"}


@@ -392,6 +394,8 @@ class DisableEditingBoundary(bpy.types.Operator):
        bprops.is_editing = False
        for ifc_attribute, blender_property in EDITABLE_ATTRIBUTES.items():
            setattr(bprops, blender_property, None)
+        bprops.physical_or_virtual = "NOTDEFINED"
+        bprops.internal_or_external = "NOTDEFINED"
        return {"FINISHED"}


@@ -411,6 +415,8 @@ class EditBoundaryAttributes(bpy.types.Operator, tool.Ifc.Operator):
            obj = getattr(bprops, blender_property, None)
            entity = tool.Ifc.get_entity(obj)
            attributes[blender_property] = entity
+        attributes["physical_or_virtual"] = bprops.physical_or_virtual
+        attributes["internal_or_external"] = bprops.internal_or_external
        ifcopenshell.api.boundary.edit_attributes(tool.Ifc.get(), entity=boundary, **attributes)
        bpy.ops.bim.disable_editing_boundary()
        return {"FINISHED"}
@@ -21,6 +21,7 @@ from typing import TYPE_CHECKING, Union
 import bpy
 from bpy.props import (
    BoolProperty,
+    EnumProperty,
    PointerProperty,
 )
 from bpy.types import PropertyGroup
@@ -50,12 +51,43 @@ def element_filter(self: "BIMObjectBoundaryProperties", object: bpy.types.Object
    return False


+def get_internal_or_external_items(
+    self: "BIMObjectBoundaryProperties", context: bpy.types.Context | None
+) -> list[tuple[str, str, str]]:
+    items = [
+        ("INTERNAL", "Internal", ""),
+        ("EXTERNAL", "External", ""),
+    ]
+    ifc = tool.Ifc.get()
+    if not ifc or ifc.schema != "IFC2X3":
+        items += [
+            ("EXTERNAL_EARTH", "External Earth", ""),
+            ("EXTERNAL_WATER", "External Water", ""),
+            ("EXTERNAL_FIRE", "External Fire", ""),
+        ]
+    items.append(("NOTDEFINED", "Not Defined", ""))
+    return items
+
+
 class BIMObjectBoundaryProperties(PropertyGroup):
    is_editing: BoolProperty(name="Is Editing")
    relating_space: PointerProperty(name="RelatingSpace", type=bpy.types.Object, poll=space_filter)
    related_building_element: PointerProperty(name="RelatedBuildingElement", type=bpy.types.Object, poll=element_filter)
    parent_boundary: PointerProperty(name="ParentBoundary", type=bpy.types.Object, poll=boundary_filter)
    corresponding_boundary: PointerProperty(name="CorrespondingBoundary", type=bpy.types.Object, poll=boundary_filter)
+    physical_or_virtual: EnumProperty(
+        name="PhysicalOrVirtualBoundary",
+        items=[
+            ("PHYSICAL", "Physical", ""),
+            ("VIRTUAL", "Virtual", ""),
+            ("NOTDEFINED", "Not Defined", ""),
+        ],
+        default="NOTDEFINED",
+    )
+    internal_or_external: EnumProperty(
+        name="InternalOrExternalBoundary",
+        items=get_internal_or_external_items,
+    )

    if TYPE_CHECKING:
        is_editing: bool
@@ -63,6 +95,8 @@ class BIMObjectBoundaryProperties(PropertyGroup):
        related_building_element: Union[bpy.types.Object, None]
        parent_boundary: Union[bpy.types.Object, None]
        corresponding_boundary: Union[bpy.types.Object, None]
+        physical_or_virtual: str
+        internal_or_external: str  # values depend on schema: IFC2X3 omits EXTERNAL_EARTH/WATER/FIRE


 class BIMBoundaryProperties(PropertyGroup):
@@ -77,6 +77,10 @@ class BIM_PT_Boundary(Panel):
            self.draw_relation_editor(boundary, "RelatedBuildingElement", "related_building_element")
            self.draw_relation_editor(boundary, "ParentBoundary", "parent_boundary")
            self.draw_relation_editor(boundary, "CorrespondingBoundary", "corresponding_boundary")
+            row = self.layout.row()
+            row.prop(self.bprops, "physical_or_virtual")
+            row = self.layout.row()
+            row.prop(self.bprops, "internal_or_external")
        else:
            row = self.layout.row()
            row.operator("bim.enable_editing_boundary", icon="GREASEPENCIL", text="Edit")
@@ -84,6 +88,8 @@ class BIM_PT_Boundary(Panel):
            self.draw_relation_data(boundary, "RelatedBuildingElement")
            self.draw_relation_data(boundary, "ParentBoundary")
            self.draw_relation_data(boundary, "CorrespondingBoundary")
+            self.draw_enum_data(boundary, "PhysicalOrVirtualBoundary")
+            self.draw_enum_data(boundary, "InternalOrExternalBoundary")
            if hasattr(boundary, "InnerBoundaries"):
                for i, inner_boundary in enumerate(getattr(boundary, "InnerBoundaries", ())):
                    row = self.layout.row(align=True)
@@ -110,6 +116,11 @@ class BIM_PT_Boundary(Panel):
            else:
                row.label(text="")

+    def draw_enum_data(self, boundary, ifc_attribute: str):
+        row = self.layout.row(align=True)
+        row.label(text=ifc_attribute)
+        row.label(text=getattr(boundary, ifc_attribute, "") or "")
+
    def draw_relation_editor(self, boundary, ifc_attribute: str, blender_property: str):
        if hasattr(boundary, ifc_attribute):
            row = self.layout.row(align=True)
@@ -201,16 +201,10 @@ class ExecuteIfcClash(bpy.types.Operator, ExportHelper):
        "ALT+click to run a quick clash without selecting a file to save."
    )

-    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]
+    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(
        options={"SKIP_SAVE"},
    )

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


 class ClashSource(PropertyGroup):
-    name: StringProperty(  # pyright: ignore[reportRedeclaration]
+    name: StringProperty(
        name="File",
        description="Absolute filepath to existing .ifc file to use as a clash source.",
    )
-    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")  # pyright: ignore[reportRedeclaration]
-    mode: EnumProperty(  # pyright: ignore[reportRedeclaration]
+    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")
+    mode: EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    clash_type: EnumProperty(
        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()  # pyright: ignore[reportRedeclaration]
+    cost_schedule: bpy.props.IntProperty()

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

-    geometry_library: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+    geometry_library: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    custom_geometry_library: bpy.props.StringProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    object_type: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    object_type: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    log_level: bpy.props.EnumProperty(
        name="Log Level",
        items=[(i, i, "") for i in get_args(LogLevelType)],
        default="WARNING",
@@ -799,19 +799,24 @@ class DecoratorData:
        pset_data = ifcopenshell.util.element.get_pset(element, "BBIM_Dimension") or {}
        show_description_only = pset_data.get("ShowDescriptionOnly", False)
        suppress_zero_inches = pset_data.get("SuppressZeroInches", False)
+        suppress_zero_feet = pset_data.get("SuppressZeroFeet", False)
+        is_ordinate = pset_data.get("IsOrdinate", False)
        text_prefix = pset_data.get("TextPrefix", None) or ""
        text_suffix = pset_data.get("TextSuffix", None) or ""
-        custom_unit_list = pset_data.get("CustomUnit", None) or ""
-        custom_unit = custom_unit_list[0] if custom_unit_list else ""
+        custom_units = list(pset_data.get("CustomUnit", None) or [])
+        separator = pset_data.get("Separator", None) or " / "

        return {
            "dimension_style": dimension_style,
            "show_description_only": show_description_only,
            "suppress_zero_inches": suppress_zero_inches,
+            "suppress_zero_feet": suppress_zero_feet,
+            "is_ordinate": is_ordinate,
            "text_prefix": text_prefix,
            "text_suffix": text_suffix,
            "fill_bg": fill_bg,
-            "custom_unit": custom_unit,
+            "custom_units": custom_units,
+            "separator": separator,
        }

    @classmethod
@@ -490,7 +490,7 @@ class BaseDecorator:
        self.draw_label(context, text=text, line_no=line_number_start, multiline=True, **draw_label_kwargs)

    @cache
-    def format_value(self, context, value, suppress_zero_inches=False, custom_unit=None, in_unit_length=False):
+    def format_value(self, context, value, suppress_zero_inches=False, suppress_zero_feet=False, custom_unit=None, in_unit_length=False):
        drawing_pset_data = DrawingsData.data["active_drawing_pset_data"]
        precision = drawing_pset_data.get("MetricPrecision", None)
        if not precision:
@@ -502,6 +502,7 @@ class BaseDecorator:
            precision=precision,
            decimal_places=decimal_places,
            suppress_zero_inches=suppress_zero_inches,
+            suppress_zero_feet=suppress_zero_feet,
            custom_unit=custom_unit,
            in_unit_length=in_unit_length,
        )
@@ -718,11 +719,13 @@ class DimensionDecorator(BaseDecorator):
        if not dimension_data:
            return
        show_description_only = dimension_data["show_description_only"]
+        is_ordinate = dimension_data["is_ordinate"]
        text_prefix = dimension_data["text_prefix"]
        text_suffix = dimension_data["text_suffix"]
        viewportDrawingScale = self.get_viewport_drawing_scale(context)
        text_offset_value = viewportDrawingScale * 3

+        ordinate_total = 0.0
        for i0, i1 in indices:
            v0 = Vector(vertices[i0])
            v1 = Vector(vertices[i1])
@@ -741,16 +744,25 @@ class DimensionDecorator(BaseDecorator):
                "multiline": True,
                "text_dir": text_dir,
            }
-            base_pos = p0 + text_dir * 0.5
+            base_pos = p1 if is_ordinate else p0 + text_dir * 0.5

            if not show_description_only:
-                length = (v1 - v0).length
-                text = self.format_value(
-                    context,
-                    length,
-                    suppress_zero_inches=dimension_data["suppress_zero_inches"],
-                    custom_unit=dimension_data["custom_unit"],
-                )
+                segment_length = (v1 - v0).length
+                if is_ordinate:
+                    ordinate_total += segment_length
+                length = ordinate_total if is_ordinate else segment_length
+                units_to_format = dimension_data["custom_units"] if dimension_data["custom_units"] else [None]
+                parts = [
+                    self.format_value(
+                        context,
+                        length,
+                        suppress_zero_inches=dimension_data["suppress_zero_inches"],
+                        suppress_zero_feet=dimension_data["suppress_zero_feet"],
+                        custom_unit=unit,
+                    )
+                    for unit in units_to_format
+                ]
+                text = dimension_data["separator"].join(str(p) for p in parts)
                if isinstance(self, DiameterDecorator):
                    text = "D" + text
                text = text_prefix + text + text_suffix
@@ -761,15 +773,18 @@ class DimensionDecorator(BaseDecorator):

            self.draw_label(
                text=text,
-                pos=base_pos + text_offset,
-                box_alignment="bottom-middle",
+                pos=base_pos + text_offset + (Vector((0, text_offset_value)) if is_ordinate else Vector((0, 0))),
+                box_alignment="bottom-right" if is_ordinate else "bottom-middle",
                multiline_to_bottom=False,
                **common_label_attrs,
            )

            if not show_description_only and description:
                self.draw_label(
-                    text=description, pos=base_pos - text_offset, box_alignment="top-middle", **common_label_attrs
+                    text=description,
+                    pos=base_pos - text_offset + (Vector((0, text_offset_value)) if is_ordinate else Vector((0, 0))),
+                    box_alignment="top-right" if is_ordinate else "top-middle",
+                    **common_label_attrs,
                )


@@ -965,7 +980,9 @@ class RadiusDecorator(BaseDecorator):

        def get_text():
            length = (spline_points[-1] - spline_points[-2]).length
-            return "R" + self.format_value(context, length, custom_unit=dimension_data["custom_unit"])
+            units_to_format = dimension_data["custom_units"] if dimension_data["custom_units"] else [None]
+            parts = [self.format_value(context, length, suppress_zero_feet=dimension_data["suppress_zero_feet"], custom_unit=unit) for unit in units_to_format]
+            return "R" + dimension_data["separator"].join(str(p) for p in parts)

        self.draw_dimension_text(
            context, get_text, description, dimension_data, pos=pos, text_dir=Vector((1, 0)), box_alignment="center"
@@ -1898,23 +1915,14 @@ class CutDecorator:
            no = tool.Drawing.get_extrusion_vector(element).normalized()
            no = Vector([1.0, 0.0, 0.0])
        no *= sense_factor
-        # Detect non-conformant exports (e.g. Revit) where DirectionSense=POSITIVE
-        # but the geometry extrudes in the negative direction. If the mesh centroid
-        # in object local space is on the wrong side of the starting plane, flip no.
-        bb = [Vector(v) for v in obj.bound_box]
-        mesh_centroid = sum(bb, Vector((0.0, 0.0, 0.0))) / 8
-        layers = list(layer_set.MaterialLayers)
-        if (mesh_centroid - co).dot(no) < 0:
-            no = -no
-            layers = list(reversed(layers))
-        last_i = len(layers) - 1
+        last_i = len(layer_set.MaterialLayers) - 1

        vert_map = {}
        verts = []
        edges = []
        j = 0

-        for i, layer in enumerate(layers):
+        for i, layer in enumerate(layer_set.MaterialLayers):
            prev_co = co.copy()
            co += no * layer.LayerThickness * self.unit_scale
            if i != last_i:
@@ -170,6 +170,7 @@ def format_distance(
    precision=None,
    decimal_places=None,
    suppress_zero_inches=False,
+    suppress_zero_feet=False,
    in_unit_length=False,
    custom_unit=None,
 ):
@@ -310,10 +311,10 @@ def format_distance(
            tx_dist = ""
            if feet:
                tx_dist += str(feet) + "'"
-            if not feet and not add_inches:
+            if not feet and not add_inches and not suppress_zero_feet:
                tx_dist += str(feet) + "'"

-            if not feet and add_inches:
+            if not feet and add_inches and unit_length != "INCHES" and not suppress_zero_feet:
                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(  # pyright: ignore[reportRedeclaration]
+    print_all: bpy.props.BoolProperty(
        name="Print All",
        default=False,
        options={"SKIP_SAVE"},
    )
-    open_viewer: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
+    open_viewer: bpy.props.BoolProperty(
        name="Open in Viewer",
        default=False,
        options={"SKIP_SAVE"},
    )
-    sync: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
+    sync: bpy.props.BoolProperty(
        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,
@@ -729,17 +729,8 @@ class CreateDrawing(bpy.types.Operator):
                no = tool.Drawing.get_extrusion_vector(element).normalized()
                no = Vector([1.0, 0.0, 0.0])
            no *= sense_factor
-            # Detect non-conformant exports (e.g. Revit) where DirectionSense=POSITIVE
-            # but the geometry extrudes in the negative direction. If the mesh centroid
-            # in object local space is on the wrong side of the starting plane, flip no.
-            bb = [Vector(v) for v in obj.bound_box]
-            mesh_centroid = sum(bb, Vector((0.0, 0.0, 0.0))) / 8
-            layers = list(layer_set.MaterialLayers)
-            if (mesh_centroid - co).dot(no) < 0:
-                no = -no
-                layers = list(reversed(layers))
-            last_i = len(layers) - 1
-            for i, layer in enumerate(layers):
+            last_i = len(layer_set.MaterialLayers) - 1
+            for i, layer in enumerate(layer_set.MaterialLayers):
                prev_co = co.copy()
                co += no * layer.LayerThickness * self.unit_scale

@@ -1435,6 +1426,7 @@ class CreateDrawing(bpy.types.Operator):
                "/Pset_.*Common/.Status",
                "EPset_Status.Status",
                "EPset_Status.UserDefinedStatus",
+                "Material.Name",
            ]

        group = root.find("{http://www.w3.org/2000/svg}g")
@@ -2330,14 +2322,14 @@ class ActivateDrawingBase(tool.Ifc.Operator):
        + "SHIFT+CLICK to load a quick preview of the drawing view"
    )

-    drawing: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
-    should_view_from_camera: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
+    drawing: bpy.props.IntProperty()
+    should_view_from_camera: bpy.props.BoolProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    use_quick_preview: bpy.props.BoolProperty(
        name="Use Quick Preview",
        description="Just move the camera to the drawing view, without loading anything else.",
        default=False,
@@ -3643,14 +3635,12 @@ class ToggleTargetView(bpy.types.Operator):
    bl_label = "Toggle Target View"
    bl_options = {"REGISTER", "UNDO"}

-    target_view: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
-    toggle_all: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
+    target_view: bpy.props.StringProperty()
+    toggle_all: bpy.props.BoolProperty(
        default=False,
        options={"SKIP_SAVE"},
    )
-    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
-        items=[(i, i, "") for i in get_args(ToggleOption)]
-    )
+    option: bpy.props.EnumProperty(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(  # pyright: ignore[reportRedeclaration]
+    symbol: EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    custom_symbol: StringProperty(
        name="Custom Symbol",
        description="Non-default symbol to use for this text.",
    )
@@ -1371,14 +1371,18 @@ class SvgWriter:

            def get_text():
                radius = (points[-1].co - points[-2].co).length
-                radius = helper.format_distance(
-                    radius,
-                    precision=self.precision,
-                    decimal_places=self.decimal_places,
-                    custom_unit=dimension_data["custom_unit"],
-                )
-                text = f"R{radius}"
-                return text
+                units_to_format = dimension_data["custom_units"] if dimension_data["custom_units"] else [None]
+                parts = [
+                    helper.format_distance(
+                        radius,
+                        precision=self.precision,
+                        decimal_places=self.decimal_places,
+                        suppress_zero_feet=dimension_data["suppress_zero_feet"],
+                        custom_unit=unit,
+                    )
+                    for unit in units_to_format
+                ]
+                return "R" + dimension_data["separator"].join(str(p) for p in parts)

            self.draw_dimension_text(
                get_text, tag, dimension_data, text_position=text_position, class_str="RADIUS", box_alignment="center"
@@ -1503,10 +1507,12 @@ class SvgWriter:
                    text_format=lambda x: "D" + x,
                    show_description_only=dimension_data["show_description_only"],
                    suppress_zero_inches=dimension_data["suppress_zero_inches"],
+                    suppress_zero_feet=dimension_data["suppress_zero_feet"],
                    text_prefix=dimension_data["text_prefix"],
                    text_suffix=dimension_data["text_suffix"],
                    fill_bg=dimension_data["fill_bg"],
-                    custom_unit=dimension_data["custom_unit"],
+                    custom_units=dimension_data["custom_units"],
+                    separator=dimension_data["separator"],
                )

    def draw_dimension_annotations(self, obj: bpy.types.Object) -> None:
@@ -1517,11 +1523,15 @@ class SvgWriter:
        dimension_data = DecoratorData.get_dimension_data(obj)

        assert isinstance(obj.data, bpy.types.Curve)
+        is_ordinate = dimension_data["is_ordinate"]
        for spline in obj.data.splines:
            points = self.get_spline_points(spline)
+            ordinate_total = 0.0
            for i in range(len(points) - 1):
                v0_global = matrix_world @ points[i].co.xyz
                v1_global = matrix_world @ points[i + 1].co.xyz
+                if is_ordinate:
+                    ordinate_total += (v1_global - v0_global).length
                self.draw_dimension_annotation(
                    v0_global,
                    v1_global,
@@ -1529,10 +1539,13 @@ class SvgWriter:
                    dimension_text=dimension_text,
                    show_description_only=dimension_data["show_description_only"],
                    suppress_zero_inches=dimension_data["suppress_zero_inches"],
+                    suppress_zero_feet=dimension_data["suppress_zero_feet"],
                    text_prefix=dimension_data["text_prefix"],
                    text_suffix=dimension_data["text_suffix"],
                    fill_bg=dimension_data["fill_bg"],
-                    custom_unit=dimension_data["custom_unit"],
+                    custom_units=dimension_data["custom_units"],
+                    separator=dimension_data["separator"],
+                    distance_override=ordinate_total if is_ordinate else None,
                )

    def draw_measureit_arch_dimension_annotations(self) -> None:
@@ -1556,10 +1569,13 @@ class SvgWriter:
        text_format=lambda x: x,
        show_description_only=False,
        suppress_zero_inches=False,
+        suppress_zero_feet=False,
        text_prefix="",
        text_suffix="",
        fill_bg=False,
-        custom_unit=None,
+        custom_units=None,
+        separator=" / ",
+        distance_override=None,
    ) -> None:
        offset = Vector([self.raw_width, self.raw_height]) / 2
        v0 = self.project_point_onto_camera(v0_global)
@@ -1572,7 +1588,10 @@ class SvgWriter:
        sheet_dimension = (end - start).length

        # if annotation can't fit offset text to the right of marker
-        text_position = mid if sheet_dimension > 5 else (end + (3 * vector.normalized()))
+        if distance_override is not None:
+            text_position = end
+        else:
+            text_position = mid if sheet_dimension > 5 else (end + (3 * vector.normalized()))
        angle = math.degrees(vector.angle_signed(Vector((1, 0))))

        line = self.svg.line(start=start, end=end, class_=" ".join(classes))
@@ -1587,15 +1606,20 @@ class SvgWriter:
        }

        if not show_description_only:
-            dimension = (v1_global - v0_global).length
-            dimension = helper.format_distance(
-                dimension,
-                precision=self.precision,
-                decimal_places=self.decimal_places,
-                suppress_zero_inches=suppress_zero_inches,
-                custom_unit=custom_unit,
-            )
-            text = text_prefix + str(dimension) + text_suffix
+            dimension = distance_override if distance_override is not None else (v1_global - v0_global).length
+            units_to_format = custom_units if custom_units else [None]
+            parts = [
+                helper.format_distance(
+                    dimension,
+                    precision=self.precision,
+                    decimal_places=self.decimal_places,
+                    suppress_zero_inches=suppress_zero_inches,
+                    suppress_zero_feet=suppress_zero_feet,
+                    custom_unit=unit,
+                )
+                for unit in units_to_format
+            ]
+            text = text_prefix + separator.join(str(p) for p in parts) + text_suffix
        else:
            if not dimension_text:
                return
@@ -1603,8 +1627,8 @@ class SvgWriter:

        text_tags += self.create_text_tag(
            text,
-            text_position + perpendicular,
-            box_alignment="bottom-middle",
+            text_position + perpendicular + (Vector((0, 1.5)) if distance_override is not None else Vector((0, 0))),
+            box_alignment="bottom-right" if distance_override is not None else "bottom-middle",
            multiline_to_bottom=False,
            **text_tag_kwargs,
        )
@@ -1612,8 +1636,8 @@ class SvgWriter:
        if not show_description_only and dimension_text:
            text_tags += self.create_text_tag(
                dimension_text,
-                text_position - perpendicular,
-                box_alignment="top-middle",
+                text_position - perpendicular + (Vector((0, 1.5)) if distance_override is not None else Vector((0, 0))),
+                box_alignment="top-right" if distance_override is not None else "top-middle",
                multiline_to_bottom=True,
                **text_tag_kwargs,
            )
@@ -85,7 +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()
+    blender_op = bpy.ops.mesh.separate.get_rna_type()  # ty: ignore[missing-argument]
    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"]
@@ -246,7 +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()
+    blender_op = bpy.ops.object.origin_set.get_rna_type()  # ty: ignore[missing-argument]
    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)"
@@ -801,7 +801,7 @@ 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()
+    blender_op = bpy.ops.object.delete.get_rna_type()  # ty: ignore[missing-argument]
    bl_description = (
        blender_op.description
        + ".\nAlso makes sure changes in sync with IFC."
@@ -821,7 +821,7 @@ 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()
+        poll = bpy.ops.object.delete.poll()  # ty: ignore[missing-argument]
        if poll:
            return True
        cls.poll_message_set("Only available in OBJECT mode")
@@ -1045,7 +1045,7 @@ 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()
+    blender_op = bpy.ops.outliner.delete.get_rna_type()  # ty: ignore[missing-argument]
    bl_description = (
        blender_op.description
        + ".\nAlso makes sure changes in sync with IFC."
@@ -1060,7 +1060,7 @@ 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()
+        poll = bpy.ops.outliner.delete.poll()  # ty: ignore[missing-argument]
        if poll:
            return True
        cls.poll_message_set("Only available from Outliner.")
@@ -1164,7 +1164,7 @@ 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()
+        poll = bpy.ops.object.duplicate_move.poll()  # ty: ignore[missing-argument]
        if poll:
            return True
        cls.poll_message_set("Only available in OBJECT mode")
@@ -1908,7 +1908,7 @@ 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()
+    blender_op = bpy.ops.mesh.separate.get_rna_type()  # ty: ignore[missing-argument]
    bl_description = (
        blender_op.description
        + ".\nAlso makes sure changes are in sync with IFC."
@@ -1926,7 +1926,7 @@ class OverrideJoin(bpy.types.Operator, tool.Ifc.Operator):

    @classmethod
    def poll(cls, context):
-        if not bpy.ops.object.join.poll():
+        if not bpy.ops.object.join.poll():  # ty: ignore[missing-argument]
            cls.poll_message_set("Active object is not EDITable.")
            return False
        if not context.selected_editable_objects:
@@ -2289,7 +2289,7 @@ class OverrideModeSetEdit(bpy.types.Operator, tool.Ifc.Operator):
        elif obj in pprops.clipping_planes_objs:
            self.report({"ERROR"}, "Clipping planes cannot be edited")
        elif element:
-            if not obj.data:
+            if not obj.data or obj.type not in ("MESH", "CURVE"):
                self.report({"INFO"}, "No geometry to edit")
            elif tool.Geometry.is_locked(element):
                self.report({"ERROR"}, lock_error_message(obj.name))
@@ -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()  # pyright: ignore[reportRedeclaration]
-    group_type: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+    ifc_definition_id: bpy.props.IntProperty()
+    group_type: bpy.props.EnumProperty(
        items=[(i, i, "") for i in get_args(tool.Group.GroupType)],
    )
-    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+    option: bpy.props.EnumProperty(
        items=[(i, i, "") for i in get_args(tool.Group.ToggleOption)],
    )

@@ -34,8 +34,10 @@ classes = (
    operator.Fetch,
    operator.Merge,
    operator.ObjectLog,
+    operator.SelectConflictEntity,
    operator.Push,
    operator.RefreshGit,
+    operator.RenameBranch,
    operator.SwitchRevision,
    operator.InstallGit,
    operator.RunGitDiff,
@@ -21,65 +21,71 @@ class IfcGitData:

    @classmethod
    def load(cls):
+        repo = None
+        if bool(tool.Ifc.get()):
+            path_ifc = tool.Ifc.get_path()
+            if os.path.isfile(path_ifc):
+                repo = tool.IfcGit.repo_from_path(path_ifc)
+
        cls.data = {
-            "repo": cls.repo(),
-            "remotes": cls.remotes(),
-            "branch_names": cls.branch_names(),
-            "remote_names": cls.remote_names(),
-            "remote_urls": cls.remote_urls(),
+            "repo": repo,
+            "remotes": repo.remotes if repo else None,
+            "branch_names": cls.branch_names(repo),
+            "tag_names": cls.tag_names(repo),
+            "remote_names": cls.remote_names(repo),
+            "remote_urls": {r.name: r.url for r in repo.remotes} if repo else {},
            "path_ifc": cls.path_ifc(),
            "branches_by_hexsha": cls.branches_by_hexsha(),
            "tags_by_hexsha": cls.tags_by_hexsha(),
-            "name_ifc": cls.name_ifc(),
+            "name_ifc": cls.name_ifc(repo),
            "dir_name": cls.dir_name(),
            "base_name": cls.base_name(),
-            "working_dir": cls.working_dir(),
-            "untracked_files": cls.untracked_files(),
-            "is_detached": cls.is_detached(),
-            "active_branch_name": cls.active_branch_name(),
-            "is_dirty": cls.is_dirty(),
-            "commit": cls.commit(),
-            "current_revision": cls.current_revision(),
+            "working_dir": repo.working_dir if repo else None,
+            "ifc_is_untracked": cls.ifc_is_untracked(repo),
+            "is_detached": repo.head.is_detached if repo else None,
+            "active_branch_name": repo.active_branch.name if repo and not repo.head.is_detached else None,
+            "is_dirty": cls.is_dirty(repo),
+            "current_revision": cls.current_revision(repo),
            "git_exe": cls.git_exe(),
            "ifcmerge_exe": cls.ifcmerge_exe(),
        }
        cls.is_loaded = True

    @classmethod
-    def repo(cls):
-        if bool(tool.Ifc.get()):
-            path_ifc = tool.Ifc.get_path()
-            if os.path.isfile(path_ifc):
-                return tool.IfcGit.repo_from_path(path_ifc)
-        return None
+    def branch_names(cls, repo):
+        if not repo or not repo.heads:
+            return []
+        names = sorted([b.name for b in repo.branches])
+        if "main" in names:
+            names.remove("main")
+            names = ["main"] + names
+        if repo.remotes:
+            for remote in repo.remotes:
+                for ref in remote.refs:
+                    names.append(ref.name)
+        return names

    @classmethod
-    def remotes(cls):
-        if cls.repo():
-            return cls.repo().remotes
-        return None
+    def tag_names(cls, repo):
+        if not repo:
+            return []
+        return [t.name for t in repo.tags]

    @classmethod
-    def branch_names(cls):
-        return []
-
-    @classmethod
-    def remote_names(cls):
-        return []
-
-    @classmethod
-    def remote_urls(cls):
-        result = {}
-        if cls.repo():
-            for remote in cls.repo().remotes:
-                result[remote.name] = remote.url
-        return result
+    def remote_names(cls, repo):
+        if not repo:
+            return []
+        names = sorted([r.name for r in repo.remotes])
+        if "origin" in names:
+            names.remove("origin")
+            names = ["origin"] + names
+        return names

    @classmethod
    def path_ifc(cls):
        path_ifc = tool.Ifc.get_path()
        if os.path.isfile(path_ifc):
-            return tool.Ifc.get_path()
+            return path_ifc
        return None

    @classmethod
@@ -88,7 +94,8 @@ class IfcGitData:
            if tool.IfcGitRepo.repo.branches:
                return tool.IfcGit.branches_by_hexsha(tool.IfcGitRepo.repo)
        except AttributeError:
-            return {}
+            pass
+        return {}

    @classmethod
    def tags_by_hexsha(cls):
@@ -97,12 +104,11 @@ class IfcGitData:
        return {}

    @classmethod
-    def name_ifc(cls):
-        if bool(tool.Ifc.get()):
+    def name_ifc(cls, repo):
+        if bool(tool.Ifc.get()) and repo:
            path_ifc = tool.Ifc.get_path()
-            if tool.IfcGitRepo.repo and os.path.isfile(path_ifc):
-                working_dir = tool.IfcGitRepo.repo.working_dir
-                return os.path.relpath(path_ifc, working_dir)
+            if os.path.isfile(path_ifc):
+                return os.path.relpath(path_ifc, repo.working_dir)
        return None

    @classmethod
@@ -122,49 +128,28 @@ class IfcGitData:
        return None

    @classmethod
-    def working_dir(cls):
-        if cls.repo():
-            return cls.repo().working_dir
+    def ifc_is_untracked(cls, repo):
+        """Return True if the IFC file exists in the repo but has not been added to git."""
+        if not repo:
+            return False
+        path_ifc = tool.Ifc.get_path()
+        if not os.path.isfile(path_ifc):
+            return False
+        return not bool(repo.git.ls_files(path_ifc))

    @classmethod
-    def untracked_files(cls):
-        if cls.repo():
-            return cls.repo().untracked_files
-        return []
-
-    @classmethod
-    def is_detached(cls):
-        if cls.repo():
-            return cls.repo().head.is_detached
-
-    @classmethod
-    def active_branch_name(cls):
-        if cls.repo() and not cls.is_detached():
-            return cls.repo().active_branch.name
-
-    @classmethod
-    def is_dirty(cls):
-        if cls.repo() and cls.git_exe():
+    def is_dirty(cls, repo):
+        if repo and cls.git_exe():
            path_ifc = tool.Ifc.get_path()
            if os.path.isfile(path_ifc):
-                return cls.repo().is_dirty(path=path_ifc)
+                return repo.is_dirty(path=path_ifc)
        return False

    @classmethod
-    def commit(cls):
+    def current_revision(cls, repo):
        props = tool.IfcGit.get_ifcgit_props()
-        if cls.repo() and len(props.ifcgit_commits) > 0:
-            item = props.ifcgit_commits[props.commit_index]
-            try:
-                return cls.repo().commit(rev=item.hexsha)
-            except ValueError:
-                return
-
-    @classmethod
-    def current_revision(cls):
-        props = tool.IfcGit.get_ifcgit_props()
-        if cls.repo() and cls.repo().head.is_valid() and len(props.ifcgit_commits) > 0:
-            return tool.IfcGitRepo.repo.commit()
+        if repo and repo.head.is_valid() and len(props.ifcgit_commits) > 0:
+            return repo.commit()

    @classmethod
    def git_exe(cls):
@@ -120,11 +120,11 @@ class CommitChanges(bpy.types.Operator):
        if props.commit_message == "":
            return False
        if repo:
-            if props.new_branch_name in [branch.name for branch in repo.branches]:
+            if props.new_branch_name in IfcGitData.data["branch_names"]:
                cls.poll_message_set("Branch already exists!")
                return False
            elif not tool.IfcGit.is_valid_ref_format(props.new_branch_name):
-                if repo.head.is_detached:
+                if IfcGitData.data["is_detached"]:
                    cls.poll_message_set("Branch name is invalid or empty!")
                    return False
                elif props.new_branch_name != "":
@@ -134,10 +134,17 @@ class CommitChanges(bpy.types.Operator):

    def execute(self, context):

-        repo = IfcGitData.data["repo"]
-        core.commit_changes(tool.IfcGit, tool.Ifc, repo)
-        core.refresh_revision_list(tool.IfcGit, repo, tool.Ifc)
+        props = tool.IfcGit.get_ifcgit_props()
+        commit_message = props.commit_message
+        new_branch_name = props.new_branch_name
+        core.commit_changes(tool.IfcGit, tool.Ifc, commit_message, new_branch_name)
+        props.new_branch_name = ""
+        props.commit_message = ""
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
        refresh()
+        IfcGitData.load()
+        if new_branch_name:
+            props.display_branch = new_branch_name
        return {"FINISHED"}


@@ -157,7 +164,7 @@ class AddTag(bpy.types.Operator):
        repo = IfcGitData.data["repo"]
        if repo and (
            not tool.IfcGit.is_valid_ref_format(props.new_tag_name)
-            or props.new_tag_name in [tag.name for tag in repo.tags]
+            or props.new_tag_name in IfcGitData.data["tag_names"]
        ):
            return False
        return True
@@ -165,8 +172,12 @@ class AddTag(bpy.types.Operator):
    def execute(self, context):

        repo = IfcGitData.data["repo"]
-        core.add_tag(tool.IfcGit, repo)
-        core.refresh_revision_list(tool.IfcGit, repo, tool.Ifc)
+        props = tool.IfcGit.get_ifcgit_props()
+        item = props.ifcgit_commits[props.commit_index]
+        core.add_tag(tool.IfcGit, repo, item.hexsha, props.new_tag_name, props.new_tag_message)
+        props.new_tag_name = ""
+        props.new_tag_message = ""
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
        refresh()
        return {"FINISHED"}

@@ -183,7 +194,7 @@ class DeleteTag(bpy.types.Operator):

        repo = IfcGitData.data["repo"]
        core.delete_tag(tool.IfcGit, repo, self.tag_name)
-        core.refresh_revision_list(tool.IfcGit, repo, tool.Ifc)
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
        refresh()
        return {"FINISHED"}

@@ -191,7 +202,7 @@ class DeleteTag(bpy.types.Operator):
 class RefreshGit(bpy.types.Operator):
    """Refresh revision list"""

-    bl_label = ""
+    bl_label = "Refresh"
    bl_idname = "ifcgit.refresh"
    bl_options = {"REGISTER"}

@@ -205,8 +216,7 @@ class RefreshGit(bpy.types.Operator):

    def execute(self, context):

-        repo = IfcGitData.data["repo"]
-        core.refresh_revision_list(tool.IfcGit, repo, tool.Ifc)
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
        refresh()
        tool.IfcGit.decolourise()
        return {"FINISHED"}
@@ -215,7 +225,7 @@ class RefreshGit(bpy.types.Operator):
 class DisplayRevision(bpy.types.Operator):
    """Colourise objects by selected revision"""

-    bl_label = ""
+    bl_label = "Colourise Revision"
    bl_idname = "ifcgit.display_revision"
    bl_options = {"REGISTER"}

@@ -250,7 +260,7 @@ class DisplayUncommitted(bpy.types.Operator):
 class SwitchRevision(bpy.types.Operator):
    """Switches the repository to the selected revision and reloads the IFC file"""

-    bl_label = ""
+    bl_label = "Switch Revision"
    bl_idname = "ifcgit.switch_revision"
    bl_options = {"REGISTER"}

@@ -268,7 +278,7 @@ class SwitchRevision(bpy.types.Operator):


 class Merge(bpy.types.Operator):
-    """Merges the selected branch into working branch"""
+    """Merges the selected branch into working branch.\nCtrl+click to preview without merging"""

    bl_label = "Merge this branch"
    bl_idname = "ifcgit.merge"
@@ -282,15 +292,84 @@ class Merge(bpy.types.Operator):
            return True
        return False

-    def execute(self, context):
+    def invoke(self, context, event):
+        if event.ctrl:
+            core.dry_run_merge(tool.IfcGit, tool.Ifc, self)
+            refresh()
+            return {"FINISHED"}
+        return self.execute(context)

-        if core.merge_branch(tool.IfcGit, tool.Ifc, self):
+    def execute(self, context):
+        if core.merge_branch(tool.IfcGit, tool.Ifc, self) is not False:
            refresh()
            return {"FINISHED"}
        else:
            return {"CANCELLED"}


+class SelectConflictEntity(bpy.types.Operator):
+    """Select the conflicting entity in the viewport"""
+
+    bl_label = "Select Conflict Entity"
+    bl_idname = "ifcgit.select_conflict_entity"
+    bl_options = {"REGISTER"}
+
+    step_id: bpy.props.IntProperty()
+
+    if TYPE_CHECKING:
+        step_id: int
+
+    def execute(self, context):
+        model = tool.Ifc.get()
+        if not model:
+            return {"CANCELLED"}
+
+        try:
+            entity = model.by_id(self.step_id)
+        except Exception:
+            self.report({"WARNING"}, f"Entity #{self.step_id} not found (may have been deleted locally)")
+            return {"CANCELLED"}
+
+        obj = tool.Ifc.get_object(entity)
+        if obj is None:
+            # Walk inverse references up to 5 hops to find nearest entity with a Blender object
+            visited = {entity.id()}
+            queue = [entity]
+            for _ in range(5):
+                next_queue = []
+                for ent in queue:
+                    for inv in model.get_inverse(ent):
+                        if inv.id() in visited:
+                            continue
+                        visited.add(inv.id())
+                        obj = tool.Ifc.get_object(inv)
+                        if obj is not None:
+                            break
+                        next_queue.append(inv)
+                    if obj is not None:
+                        break
+                if obj is not None:
+                    break
+                queue = next_queue
+
+        if obj is None:
+            self.report({"INFO"}, f"No viewport representation found for #{self.step_id} ({entity.is_a()})")
+            return {"CANCELLED"}
+
+        bpy.ops.object.select_all(action="DESELECT")
+        obj.select_set(True)
+        context.view_layer.objects.active = obj
+        for area in context.screen.areas:
+            if area.type == "VIEW_3D":
+                region = next((r for r in area.regions if r.type == "WINDOW"), None)
+                if region:
+                    with context.temp_override(area=area, region=region):
+                        bpy.ops.view3d.view_selected()
+                break
+
+        return {"FINISHED"}
+
+
 class Push(bpy.types.Operator):
    """Pushes the working branch to selected remote"""

@@ -314,9 +393,9 @@ class Fetch(bpy.types.Operator):

    def execute(self, context):
        props = tool.IfcGit.get_ifcgit_props()
-        repo = IfcGitData.data["repo"]
-        remote = repo.remotes[props.select_remote]
-        remote.fetch()
+        core.fetch(tool.IfcGit, props.select_remote)
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
+        refresh()
        return {"FINISHED"}


@@ -336,7 +415,7 @@ class AddRemote(bpy.types.Operator):
            not repo
            or not tool.IfcGit.is_valid_ref_format(props.remote_name)
            or not props.remote_url
-            or props.remote_name in [remote.name for remote in repo.remotes]
+            or props.remote_name in IfcGitData.data["remote_names"]
        ):
            return False
        return True
@@ -344,8 +423,11 @@ class AddRemote(bpy.types.Operator):
    def execute(self, context):

        repo = IfcGitData.data["repo"]
-        core.add_remote(tool.IfcGit, repo)
-        core.refresh_revision_list(tool.IfcGit, repo, tool.Ifc)
+        props = tool.IfcGit.get_ifcgit_props()
+        core.add_remote(tool.IfcGit, repo, props.remote_name, props.remote_url)
+        props.remote_name = ""
+        props.remote_url = ""
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
        refresh()
        return {"FINISHED"}

@@ -360,8 +442,19 @@ class DeleteRemote(bpy.types.Operator):
    def execute(self, context):

        repo = IfcGitData.data["repo"]
-        core.delete_remote(tool.IfcGit, repo)
-        core.refresh_revision_list(tool.IfcGit, repo, tool.Ifc)
+        props = tool.IfcGit.get_ifcgit_props()
+        remote_name = props.select_remote
+        if props.display_branch.startswith(remote_name + "/"):
+            active = IfcGitData.data["active_branch_name"]
+            if active:
+                props.display_branch = active
+            else:
+                local_branches = [b for b in IfcGitData.data["branch_names"] if "/" not in b]
+                if local_branches:
+                    props.display_branch = local_branches[0]
+        core.delete_remote(tool.IfcGit, repo, remote_name)
+        tool.IfcGit.select_first_remote()
+        core.refresh_revision_list(tool.IfcGit, tool.Ifc)
        refresh()
        return {"FINISHED"}

@@ -375,8 +468,8 @@ class ObjectLog(bpy.types.Operator):

    @classmethod
    def poll(cls, context):
-        if not (obj := context.active_object):
-            cls.poll_message_set("No Active Object")
+        if not (obj := context.active_object) or not obj.select_get():
+            cls.poll_message_set("No selected object")
        elif not tool.Blender.get_ifc_definition_id(obj):
            cls.poll_message_set("Active Object doesn't have an IFC definition")
        else:
@@ -422,7 +515,7 @@ class RunGitDiff(bpy.types.Operator):
    )
    bl_options = set()

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

    if TYPE_CHECKING:
        save_to_temp: bool
@@ -445,3 +538,37 @@ class RunGitDiff(bpy.types.Operator):
    def execute(self, context):
        core.run_git_diff(tool.IfcGit, self, self.save_to_temp)
        return {"FINISHED"}
+
+
+class RenameBranch(bpy.types.Operator):
+    """Rename the current branch"""
+
+    bl_label = "Rename Branch"
+    bl_idname = "ifcgit.rename_branch"
+    bl_options = {"REGISTER"}
+
+    new_name: bpy.props.StringProperty(name="New name")
+
+    if TYPE_CHECKING:
+        new_name: str
+
+    @classmethod
+    def poll(cls, context):
+        IfcGitData.make_sure_is_loaded()
+        if not IfcGitData.data["repo"]:
+            return False
+        if IfcGitData.data["is_detached"]:
+            return False
+        if IfcGitData.data["is_dirty"]:
+            return False
+        return True
+
+    def invoke(self, context, event):
+        self.new_name = IfcGitData.data["active_branch_name"]
+        return context.window_manager.invoke_props_dialog(self)
+
+    def execute(self, context):
+        repo = IfcGitData.data["repo"]
+        core.rename_branch(tool.IfcGit, repo, self.new_name)
+        refresh()
+        return {"FINISHED"}
@@ -17,28 +17,14 @@ from bonsai.bim.module.ifcgit.data import IfcGitData
 def git_branches(self: "IfcGitProperties", context: bpy.types.Context) -> tool.Blender.BLENDER_ENUM_ITEMS:
    # NOTE "Python must keep a reference to the strings returned by
    # the callback or Blender will misbehave or even crash"
-    IfcGitData.data["branch_names"] = sorted([branch.name for branch in IfcGitData.data["repo"].heads])
-
-    if "main" in IfcGitData.data["branch_names"]:
-        IfcGitData.data["branch_names"].remove("main")
-        IfcGitData.data["branch_names"] = ["main"] + IfcGitData.data["branch_names"]
-
-    if IfcGitData.data["remotes"]:
-        for remote in IfcGitData.data["remotes"]:
-            for remote_branch in remote.refs:
-                IfcGitData.data["branch_names"].append(remote_branch.name)
-
-    return [(myname, myname, myname) for myname in IfcGitData.data["branch_names"]]
+    # Branch list (local + remote, main first) is computed once in IfcGitData.load()
+    IfcGitData.make_sure_is_loaded()
+    return [(name, name, name) for name in IfcGitData.data["branch_names"]]


 def git_remotes(self: "IfcGitProperties", context: bpy.types.Context) -> tool.Blender.BLENDER_ENUM_ITEMS:
-    IfcGitData.data["remote_names"] = sorted([remote.name for remote in IfcGitData.data["remotes"]])
-
-    if "origin" in IfcGitData.data["remote_names"]:
-        IfcGitData.data["remote_names"].remove("origin")
-        IfcGitData.data["remote_names"] = ["origin"] + IfcGitData.data["remote_names"]
-
-    return [(myname, myname, myname) for myname in IfcGitData.data["remote_names"]]
+    IfcGitData.make_sure_is_loaded()
+    return [(name, name, name) for name in IfcGitData.data["remote_names"]]


 def update_revlist(self: "IfcGitProperties", context: bpy.types.Context) -> None:
@@ -90,6 +76,7 @@ class IfcGitListItem(PropertyGroup):
        name="Commit Message",
        default="",
    )
+    committed_date: IntProperty(name="Committed Date", default=0)
    tags: CollectionProperty(type=IfcGitTag, name="List of revision tags")

    if TYPE_CHECKING:
@@ -98,6 +85,7 @@ class IfcGitListItem(PropertyGroup):
        author_name: str
        author_email: str
        message: str
+        committed_date: int
        tags: bpy.types.bpy_prop_collection_idprop[IfcGitTag]


@@ -151,6 +139,11 @@ class IfcGitProperties(PropertyGroup):
        ],
        update=update_revlist,
    )
+    merge_conflicts: StringProperty(
+        name="Merge Conflicts",
+        description="JSON report from last failed merge attempt",
+        default="",
+    )

    if TYPE_CHECKING:
        ifcgit_commits: bpy.types.bpy_prop_collection_idprop[IfcGitListItem]
@@ -165,3 +158,4 @@ class IfcGitProperties(PropertyGroup):
        display_branch: str
        select_remote: str
        ifcgit_filter: Literal["all", "tagged", "relevant"]
+        merge_conflicts: str
@@ -52,7 +52,7 @@ class IFCGIT_PT_panel(bpy.types.Panel):
            if IfcGitData.data["repo"] and os.path.exists(IfcGitData.data["repo"].git_dir):
                name_ifc = IfcGitData.data["name_ifc"]
                row.label(text=IfcGitData.data["working_dir"], icon="SYSTEM")
-                if name_ifc in IfcGitData.data["untracked_files"]:
+                if IfcGitData.data["ifc_is_untracked"]:
                    row.operator(
                        "ifcgit.addfile",
                        text="Add '" + name_ifc + "' to repository",
@@ -112,15 +112,13 @@ class IFCGIT_PT_panel(bpy.types.Panel):
            row.label(text="Working branch: Detached HEAD")
        else:
            row.label(text="Working branch: " + IfcGitData.data["active_branch_name"])
+            row.operator("ifcgit.rename_branch", icon="GREASEPENCIL", text="")

-        grouped = layout.row()
-        column = grouped.column()
-        row = column.row()
+        row = layout.row()
        row.prop(props, "display_branch", text="Browse branch")
        row.prop(props, "ifcgit_filter", text="Filter revisions")

-        row = column.row()
-        row.template_list(
+        layout.template_list(
            "COMMIT_UL_List",
            "The_List",
            props,
@@ -128,20 +126,64 @@ class IFCGIT_PT_panel(bpy.types.Panel):
            props,
            "commit_index",
        )
-        column = grouped.column()
-        row = column.row()
+
+        row = layout.row(align=True)
        row.operator("ifcgit.refresh", icon="FILE_REFRESH")
-
        if not is_dirty:
-
-            row = column.row()
            row.operator("ifcgit.display_revision", icon="SELECT_DIFFERENCE")
-
-            row = column.row()
            row.operator("ifcgit.switch_revision", icon="CURRENT_FILE")
+            row.operator("ifcgit.merge", icon="SYSTEM")

-            row = column.row()
-            row.operator("ifcgit.merge", icon="EXPERIMENTAL", text="")
+        conflicts = tool.IfcGit.get_merge_conflicts()
+        if conflicts is not None:
+            box = layout.box()
+            box.alert = True
+            row = box.row()
+            row.label(
+                text=f"Merge failed \u2014 {len(conflicts)} conflict(s)",
+                icon="ERROR",
+            )
+            for conflict in conflicts:
+                col = box.column(align=True)
+                conflict_type = conflict.get("type", "")
+                entity_id = conflict.get("entity_id", "?")
+                local_id = conflict.get("original_local_id")
+
+                if conflict_type == "attribute_conflict":
+                    entity_class = conflict.get("entity_class", "Entity")
+                    attr_idx = conflict.get("attribute_index", "?")
+                    desc = f"#{entity_id} {entity_class}: attribute {attr_idx} conflict"
+                elif conflict_type == "entity_deleted_and_modified":
+                    entity_class = conflict.get("entity_class", "Entity")
+                    desc = f"#{entity_id} {entity_class}: " + conflict.get("message", "deleted/modified conflict")
+                elif conflict_type == "class_changed":
+                    desc = (
+                        f"#{entity_id}: class changed "
+                        + conflict.get("base_class", "?")
+                        + " \u2192 "
+                        + conflict.get("modified_class", "?")
+                    )
+                elif conflict_type == "required_entity_deleted":
+                    desc = f"#{entity_id}: " + conflict.get("message", "required entity deleted")
+                else:
+                    desc = f"#{entity_id}: {conflict_type}"
+
+                row = col.row(align=True)
+                row.label(text=desc)
+                if local_id:
+                    op = row.operator(
+                        "ifcgit.select_conflict_entity",
+                        text="",
+                        icon="RESTRICT_SELECT_OFF",
+                    )
+                    op.step_id = local_id
+
+                if conflict_type == "attribute_conflict":
+                    sub = col.column(align=True)
+                    sub.scale_y = 0.75
+                    sub.label(text=f"  Base:   {conflict.get('base_value', '')}")
+                    sub.label(text=f"  Local:  {conflict.get('local_value', '')}")
+                    sub.label(text=f"  Remote: {conflict.get('remote_value', '')}")

        if not props.ifcgit_commits:
            return
@@ -216,13 +258,7 @@ class COMMIT_UL_List(bpy.types.UIList):
    ):

        current_revision = IfcGitData.data["current_revision"]
-
-        # TODO Figure how this "item" can be acesse in "data.py"
-        # so it's possible to move the ".commit"
-        try:
-            commit = IfcGitData.data["repo"].commit(rev=item.hexsha)
-        except ValueError:
-            return
+        current_hexsha = current_revision.hexsha if current_revision else None

        lookup = IfcGitData.data["branches_by_hexsha"]
        refs = ""
@@ -236,11 +272,11 @@ class COMMIT_UL_List(bpy.types.UIList):
            for tag in lookup[item.hexsha]:
                refs += "{" + tag.name + "} "

-        if commit == current_revision:
-            layout.label(text="[HEAD] " + refs + commit.message.split("\n")[0], icon="DECORATE_KEYFRAME")
+        if item.hexsha == current_hexsha:
+            layout.label(text="[HEAD] " + refs + item.message.split("\n")[0], icon="DECORATE_KEYFRAME")
        else:
-            layout.label(text=refs + commit.message.split("\n")[0], icon="DECORATE_ANIMATE")
-        layout.label(text=time.strftime("%c", time.localtime(commit.committed_date)))
+            layout.label(text=refs + item.message.split("\n")[0], icon="DECORATE_ANIMATE")
+        layout.label(text=time.strftime("%c", time.localtime(item.committed_date)))

    def draw_filter(self, context, layout):

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

    if TYPE_CHECKING:
        use_current_location: bool
@@ -630,7 +630,7 @@ 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:
+                if "CardinalPoint" in attributes and attributes["CardinalPoint"] is not None:
                    attributes["CardinalPoint"] = int(attributes["CardinalPoint"])
                ifcopenshell.api.material.edit_profile_usage(
                    self.file,
@@ -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(  # pyright: ignore[reportRedeclaration]
+    mode: bpy.props.EnumProperty(
        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()  # pyright: ignore[reportRedeclaration]
+    index: bpy.props.IntProperty()

    if TYPE_CHECKING:
        index: int
@@ -452,10 +452,8 @@ 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()  # pyright: ignore[reportRedeclaration]
-    direction: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
-        items=[("UP", "Up", ""), ("DOWN", "Down", "")]
-    )
+    index: bpy.props.IntProperty()
+    direction: bpy.props.EnumProperty(items=[("UP", "Up", ""), ("DOWN", "Down", "")])

    if TYPE_CHECKING:
        index: int
@@ -474,7 +472,7 @@ 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()  # pyright: ignore[reportRedeclaration]
+    index: bpy.props.IntProperty()

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

    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="")  # pyright: ignore[reportRedeclaration]
-    display_name: StringProperty(name="Display Name", default="")  # pyright: ignore[reportRedeclaration]
-    value_prop: EnumProperty(  # pyright: ignore[reportRedeclaration]
+    name: StringProperty(name="Name", default="")
+    display_name: StringProperty(name="Display Name", default="")
+    value_prop: EnumProperty(
        name="Value Prop",
        items=tuple((v, v, "") for v in get_args(QuickFavoriteValueType)),
    )
-    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]
+    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(
        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)  # pyright: ignore[reportRedeclaration]
-    search: StringProperty(  # pyright: ignore[reportRedeclaration]
+    is_expanded: BoolProperty(name="Is Expanded", default=False)
+    search: StringProperty(
        name="Search",
        default="",
        search=get_operator_suggestions,
        # Resetting `search_options`, allowing users only to use suggestions.
        search_options=set(),
    )
-    properties: CollectionProperty(type=QuickFavoriteProperty)  # pyright: ignore[reportRedeclaration]
-    operator_id: StringProperty(  # pyright: ignore[reportRedeclaration]
+    properties: CollectionProperty(type=QuickFavoriteProperty)
+    operator_id: StringProperty(
        name="Operator ID",
        default="",
    )
-    label: StringProperty(  # pyright: ignore[reportRedeclaration]
+    label: StringProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    total_storeys: IntProperty(
        name="Total Storeys",
        description="Number of storeys above object's storey to take into account for resizing",
        default=1,
    )
-    override_colour: FloatVectorProperty(  # pyright: ignore[reportRedeclaration]
+    override_colour: FloatVectorProperty(
        name="Override Colour", subtype="COLOR", default=(1, 0, 0, 1), min=0.0, max=1.0, size=4
    )
-    quick_favorites: CollectionProperty(type=QuickFavoritesItem)  # pyright: ignore[reportRedeclaration]
+    quick_favorites: CollectionProperty(type=QuickFavoritesItem)

    if TYPE_CHECKING:
        total_storeys: int
@@ -540,6 +540,16 @@ class AddBoolean(Operator, tool.Ifc.Operator):
        booleans = ifcopenshell.api.geometry.add_boolean(tool.Ifc.get(), first_item, second_items, props.operator)

        rep_obj = tool.Geometry.get_geometry_props().representation_obj
+        if booleans:
+            # Users typically select two top-level items and expect the
+            # operand to be absorbed into the boolean, not remain as a
+            # standalone item alongside it.
+            representation = tool.Geometry.get_active_representation(rep_obj)
+            representation = ifcopenshell.util.representation.resolve_representation(representation)
+            second_items_set = set(second_items)
+            new_items = [i for i in representation.Items if i not in second_items_set]
+            if new_items:
+                representation.Items = new_items
        rep_element = tool.Ifc.get_entity(rep_obj)
        tool.Model.mark_manual_booleans(rep_element, booleans)
        tool.Geometry.reload_representation(rep_obj)
@@ -421,7 +421,7 @@ class PolylineOperator:
                    tool.Polyline.calculate_x_y_and_z(context, self.input_ui, self.tool_state)

                tool.Blender.update_viewport()
-                return {"RUNNING_MODAL"}
+            return {"RUNNING_MODAL"}

    def set_offset(self, context: bpy.types.Context, relating_type: ifcopenshell.entity_instance) -> None:
        props = tool.Model.get_model_props()
@@ -461,6 +461,7 @@ class PolylineOperator:
        self.tool_state.axis_method = None
        self.tool_state.plane_method = None
        self.tool_state.mode = "Mouse"
+        tool.Raycast.clear_snap_objs()
        self.visible_objs = tool.Raycast.get_visible_objects(context)
        for obj in self.visible_objs:
            if bbox_2d := tool.Raycast.get_on_screen_2d_bounding_boxes(context, obj):
@@ -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()  # pyright: ignore[reportRedeclaration]
+    page: bpy.props.IntProperty()

    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(  # pyright: ignore[reportRedeclaration]
+    join_type: bpy.props.EnumProperty(
        items=[("-", "Unjoin", ""), ("L", "L", ""), ("V", "V", ""), ("T", "T", "")],
        default="-",
    )
@@ -1729,20 +1729,20 @@ def poll_sverchok_nodes(self: "BIMExternalParametricGeometryProperties", node_tr


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

-    sverchok_nodes: bpy.props.PointerProperty(  # pyright: ignore[reportRedeclaration]
+    sverchok_nodes: bpy.props.PointerProperty(
        name="Sverchok Nodes",
        description="Sverchok node tree to use as a source for representation.",
        type=bpy.types.NodeTree,
@@ -248,8 +248,7 @@ class DumbSlabPlaner:

    def change_thickness(self, element: ifcopenshell.entity_instance, thickness: float) -> None:
        self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
-        usage_type = tool.Model.get_usage_type(element)
-        if usage_type != "LAYER3":
+        if tool.Model.get_usage_type(element) != "LAYER3":
            return
        layer_params = tool.Model.get_material_layer_parameters(element)
        ifc_file = tool.Ifc.get()
@@ -305,15 +304,11 @@ class DumbSlabPlaner:
                ifc_position = extrusion.Position
                position = offset_direction * perpendicular_offset
                material = ifcopenshell.util.element.get_material(element)
+                if material:
+                    if material.is_a("IfcMaterialLayerSetUsage"):
+                        material.OffsetFromReferenceLine = position.z
                if ifc_position:
-                    orig = Vector(ifc_position.Location.Coordinates)
-                    layer_normal = offset_direction.normalized()
-                    perp = orig - orig.dot(layer_normal) * layer_normal
-                    new_coords = perp + layer_normal * perpendicular_offset
-                    ifc_position.Location.Coordinates = new_coords
-                    if material:
-                        if material.is_a("IfcMaterialLayerSetUsage"):
-                            material.OffsetFromReferenceLine = new_coords.z
+                    ifc_position.Location.Coordinates = position
                else:
                    tool.Model.add_extrusion_position(extrusion, position)

@@ -468,14 +468,16 @@ class ChangeExtrusionXAngle(bpy.types.Operator, tool.Ifc.Operator):
                    existing_x_angle = 0 if tool.Cad.is_x(existing_x_angle, 0, tolerance=0.001) else existing_x_angle
                    existing_x_angle = 0 if tool.Cad.is_x(existing_x_angle, pi, tolerance=0.001) else existing_x_angle

-                    coord_list = builder.get_polyline_coords(extrusion.SweptArea.OuterCurve)
-                    coord_list = [
-                        (p[0], p[1] * abs(cos(existing_x_angle))) for p in coord_list
-                    ]  # Reset the transformation and returns to the original points with 0 degrees
-                    coord_list = [
-                        (p[0], p[1] * abs(1 / cos(x_angle))) for p in coord_list
-                    ]  # Apply the transformation for the new x_angle
-                    builder.set_polyline_coords(extrusion.SweptArea.OuterCurve, coord_list)
+                    profiles = extrusion.SweptArea.Profiles if extrusion.SweptArea.is_a("IfcCompositeProfileDef") else [extrusion.SweptArea]
+                    for profile in profiles:
+                        coord_list = builder.get_polyline_coords(profile.OuterCurve)
+                        coord_list = [
+                            (p[0], p[1] * abs(cos(existing_x_angle))) for p in coord_list
+                        ]  # Reset the transformation and returns to the original points with 0 degrees
+                        coord_list = [
+                            (p[0], p[1] * abs(1 / cos(x_angle))) for p in coord_list
+                        ]  # Apply the transformation for the new x_angle
+                        builder.set_polyline_coords(profile.OuterCurve, coord_list)

                    # The extrusion direction calculated previously default to the positive direction
                    # Here we set the extrusion direction to negative if that's the case
@@ -943,7 +943,7 @@ class EditObjectUI:
            if "LAYER2" in AuthoringData.data["selected_material_usages"]:
                row = cls.layout.row(align=True) if ui_context != "TOOL_HEADER" else row
                add_layout_hotkey_operator(
-                    cls.layout, "Extend To Underside", "S_E", bpy.ops.bim.extend_to_underside.__doc__, ui_context
+                    cls.layout, "Extend To Underside", "S_E", bpy.ops.bim.extend_walls_to_underside.__doc__, ui_context
                )

        if AuthoringData.data["is_flippable_element"]:
@@ -101,7 +101,7 @@ class NestDecorator:
        cls.is_installed = False

    def dotted_line_shader(self):
-        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")  # ty:ignore[too-many-positional-arguments]
+        vert_out = gpu.types.GPUStageInterfaceInfo("my_interface")
        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()  # pyright: ignore[reportRedeclaration]
+    person: bpy.props.IntProperty()

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

    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(  # pyright: ignore[reportRedeclaration]
+    name: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    name: bpy.props.EnumProperty(
        items=tuple((i, i, "") for i in get_args(tool.Owner.PersonAttributeType)),
    )
-    id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    id: bpy.props.IntProperty()

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

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

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

    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()  # pyright: ignore[reportRedeclaration]
-    ifc_class: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+    parent: bpy.props.IntProperty()
+    ifc_class: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    name: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    name: bpy.props.EnumProperty(
        items=tuple((i, i, "") for i in get_args(tool.Owner.AddressAttributeType)),
    )
-    id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+    id: bpy.props.IntProperty()

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

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

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

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

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

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

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

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

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

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

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

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

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

    if TYPE_CHECKING:
        application_id: int
@@ -86,9 +86,7 @@ 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(  # pyright: ignore[reportRedeclaration]
-        items=[(i, i, "") for i in get_args(PresetType)]
-    )
+    preset: bpy.props.EnumProperty(items=[(i, i, "") for i in get_args(PresetType)])

    if TYPE_CHECKING:
        preset: PresetType
@@ -178,13 +176,9 @@ 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"}
-    )  # 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]
+    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)

    if TYPE_CHECKING:
        filter_glob: str
@@ -568,7 +562,7 @@ 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")  # pyright: ignore[reportRedeclaration]
+    query: bpy.props.StringProperty(name="Query")

    if TYPE_CHECKING:
        query: str
@@ -600,11 +594,9 @@ 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()  # 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]
+    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"})

    if TYPE_CHECKING:
        definition: int
@@ -959,28 +951,24 @@ 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"}
-    )  # 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]
+    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(
        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(  # pyright: ignore[reportRedeclaration]
+    use_relative_path: bpy.props.BoolProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    should_start_fresh_session: bpy.props.BoolProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    import_without_ifc_data: bpy.props.BoolProperty(
        name="Import Without IFC Data",
        description=(
            "Import IFC objects as Blender objects without any IFC metadata and authoring capabilities."
@@ -988,9 +976,7 @@ class LoadProject(bpy.types.Operator, IFCFileSelector, ImportHelper):
        ),
        default=False,
    )
-    use_detailed_tooltip: bpy.props.BoolProperty(
-        default=False, options={"HIDDEN"}
-    )  # pyright: ignore[reportRedeclaration]
+    use_detailed_tooltip: bpy.props.BoolProperty(default=False, options={"HIDDEN"})
    filename_ext = ".ifc"

    if TYPE_CHECKING:
@@ -1102,7 +1088,7 @@ class LoadProject(bpy.types.Operator, IFCFileSelector, ImportHelper):
        else:
            return self.finish_loading_project(context)

-    def finish_loading_project(self, context):
+    def finish_loading_project(self, context: bpy.types.Context) -> set["rna_enums.OperatorReturnItems"]:
        try:
            filepath = self.get_filepath()
            if not self.is_existing_ifc_file():
@@ -1300,7 +1286,7 @@ 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)  # pyright: ignore[reportRedeclaration]
+    should_select: bpy.props.BoolProperty(name="Should Select", default=True)

    if TYPE_CHECKING:
        should_select: bool
@@ -1327,7 +1313,7 @@ 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(  # pyright: ignore[reportRedeclaration]
+    query: bpy.props.StringProperty(
        name="Query",
        description=(
            "Custom selector query to use to load element from a linked model. E.g. 'IfcElement'.\n\n"
@@ -1404,7 +1390,7 @@ 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")  # pyright: ignore[reportRedeclaration]
+    link_index: bpy.props.IntProperty(name="Link Index")

    if TYPE_CHECKING:
        link_index: int
@@ -1428,7 +1414,7 @@ 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")  # pyright: ignore[reportRedeclaration]
+    link_index: bpy.props.IntProperty(name="Link Index")

    if TYPE_CHECKING:
        link_index: int
@@ -1454,9 +1440,9 @@ 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")  # pyright: ignore[reportRedeclaration]
-    use_cache: bpy.props.BoolProperty(name="Use Cache", default=True)  # pyright: ignore[reportRedeclaration]
-    query: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    link_index: bpy.props.IntProperty(name="Link Index")
+    use_cache: bpy.props.BoolProperty(name="Use Cache", default=True)
+    query: bpy.props.StringProperty()

    if TYPE_CHECKING:
        link_index: int
@@ -1631,7 +1617,7 @@ class ReloadLink(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Reload the selected file"

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

    if TYPE_CHECKING:
        link_index: int
@@ -1647,7 +1633,7 @@ class ToggleLinkSelectability(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Toggle selectability"

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

    if TYPE_CHECKING:
        link_index: int
@@ -1679,8 +1665,8 @@ 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")  # pyright: ignore[reportRedeclaration]
-    mode: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+    link_index: bpy.props.IntProperty(name="Link Index")
+    mode: bpy.props.EnumProperty(
        name="Visibility Mode",
        items=((i, i, "") for i in ("WIREFRAME", "VISIBLE")),
    )
@@ -1821,7 +1807,7 @@ class SelectLinkHandle(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Select link empty object handle"

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

    if TYPE_CHECKING:
        link_index: int
@@ -1843,7 +1829,7 @@ 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")  # pyright: ignore[reportRedeclaration]
+    guid: bpy.props.StringProperty(name="GlobalId")

    if TYPE_CHECKING:
        guid: str
@@ -1882,21 +1868,11 @@ 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"}
-    )  # 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]
+    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)

    if TYPE_CHECKING:
        filter_glob: str
@@ -2053,7 +2029,7 @@ 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()  # pyright: ignore[reportRedeclaration]
+    query: bpy.props.StringProperty()
    """See ``bim.link_ifc``."""

    if TYPE_CHECKING:
@@ -2443,8 +2419,8 @@ class HideQueriedLinkedElement(bpy.types.Operator):
    )
    bl_options = {"REGISTER", "UNDO"}

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

    if TYPE_CHECKING:
        unhide_all: bool
@@ -2918,12 +2894,8 @@ 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"}
-    )  # pyright: ignore[reportRedeclaration]
-    files: bpy.props.CollectionProperty(
-        type=bpy.types.OperatorFileListElement, options={"SKIP_SAVE", "HIDDEN"}
-    )  # pyright: ignore[reportRedeclaration]
+    directory: bpy.props.StringProperty(subtype="FILE_PATH", options={"SKIP_SAVE", "HIDDEN"})
+    files: bpy.props.CollectionProperty(type=bpy.types.OperatorFileListElement, options={"SKIP_SAVE", "HIDDEN"})

    if TYPE_CHECKING:
        directory: str
@@ -2978,7 +2950,7 @@ class MeasureTool(bpy.types.Operator, PolylineOperator):
    bl_label = "Measure Tool"
    bl_options = {"REGISTER", "UNDO"}

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

    if TYPE_CHECKING:
        measure_type: str
@@ -3077,7 +3049,7 @@ class MeasureFaceAreaTool(bpy.types.Operator, PolylineOperator):
    bl_label = "Measure Face Area Tool"
    bl_options = {"REGISTER", "UNDO"}

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

    if TYPE_CHECKING:
        measure_type: str
@@ -3379,7 +3351,7 @@ 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="")  # pyright: ignore[reportRedeclaration]
+    filepath: bpy.props.StringProperty(name="IFC File Path", default="")

    if TYPE_CHECKING:
        filepath: str
@@ -345,7 +345,7 @@ class BIMProjectProperties(PropertyGroup):
        ),
        default=False,
    )
-    should_cache: BoolProperty(  # pyright: ignore[reportRedeclaration]
+    should_cache: BoolProperty(
        name="Cache",
        description=(
            "Cache loaded geometry to .h5 file in your cache directory (see in preferences) "
@@ -19,6 +19,7 @@
 from __future__ import annotations

 import os
+import shutil
 from typing import TYPE_CHECKING

 import bpy
@@ -384,6 +385,18 @@ class BIM_PT_new_project_wizard(Panel):
        row = self.layout.row()
        row.operator("bim.create_project")

+        if shutil.which("git"):
+            git_props = context.scene.IfcGitProperties
+            box = self.layout.box()
+            row = box.row()
+            row.label(text="Clone a remote Git repository")
+            row = box.row()
+            row.prop(git_props, "remote_url")
+            row = box.row()
+            row.prop(git_props, "local_folder")
+            row = box.row()
+            row.operator("ifcgit.clone_repo", icon="IMPORT")
+

 class BIM_PT_project_library(Panel):
    bl_label = "Project Library"
@@ -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()  # pyright: ignore[reportRedeclaration]
+    name: bpy.props.StringProperty()

    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(  # pyright: ignore[reportRedeclaration]
+    option: bpy.props.EnumProperty(
        items=[(t, t, "") for t in tool.Pset.BULK_OPERATION_TYPES],
    )
-    index: bpy.props.IntProperty(default=-1)  # pyright: ignore[reportRedeclaration]
+    index: bpy.props.IntProperty(default=-1)

    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()  # pyright: ignore[reportRedeclaration]
-    index2: bpy.props.IntProperty(default=-1)  # pyright: ignore[reportRedeclaration]
-    option: bpy.props.EnumProperty(  # pyright: ignore[reportRedeclaration]
+    index: bpy.props.IntProperty()
+    index2: bpy.props.IntProperty(default=-1)
+    option: bpy.props.EnumProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    option: bpy.props.EnumProperty(
        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)  # pyright: ignore[reportRedeclaration]
-    psets_to_rename: CollectionProperty(type=RenamePropertyEntry)  # pyright: ignore[reportRedeclaration]
-    psets_to_add_edit: CollectionProperty(type=AddEditPropertyEntry)  # pyright: ignore[reportRedeclaration]
+    psets_to_delete: CollectionProperty(type=DeletePsetEntry)
+    psets_to_rename: CollectionProperty(type=RenamePropertyEntry)
+    psets_to_add_edit: CollectionProperty(type=AddEditPropertyEntry)

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

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

    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(  # pyright: ignore[reportRedeclaration]
+    use_all_ifcgroups: BoolProperty(
        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(  # pyright: ignore[reportRedeclaration]
+    only_if_enabled: bpy.props.BoolProperty(
        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()  # pyright: ignore[reportRedeclaration]
+    status: bpy.props.StringProperty()

    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(  # pyright: ignore[reportRedeclaration]
+    should_override_previous_status: bpy.props.BoolProperty(
        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()  # pyright: ignore[reportRedeclaration]
-    should_unassign_status: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
+    status: bpy.props.StringProperty()
+    should_unassign_status: bpy.props.BoolProperty(
        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()  # pyright: ignore[reportRedeclaration]
+    work_schedule: bpy.props.IntProperty()

    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(  # pyright: ignore[reportRedeclaration]
+    editing_type: EnumProperty(
        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()  # pyright: ignore[reportRedeclaration]
-    is_visible: BoolProperty(  # pyright: ignore[reportRedeclaration]
+    name: StringProperty()
+    is_visible: BoolProperty(
        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()  # pyright: ignore[reportRedeclaration]
+    container: bpy.props.IntProperty()

    if TYPE_CHECKING:
        container: int
@@ -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()  # pyright: ignore[reportRedeclaration]
+    boundary_condition: bpy.props.IntProperty()

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

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

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

        shader_info = gpu.types.GPUShaderCreateInfo()
@@ -118,6 +118,19 @@ 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")),
@@ -221,24 +234,29 @@ class BIMStylesProperties(PropertyGroup):
    transparency: bpy.props.FloatProperty(
        name="Transparency", default=0.0, min=0.0, max=1.0, update=update_shader_graph
    )
-    # TODO: do something on null?
-    is_diffuse_colour_null: BoolProperty(name="Is Null")
+    is_diffuse_colour_null: BoolProperty(name="Is Null", update=update_shader_graph)
    diffuse_colour_class: EnumProperty(
        items=[(x, x, "") for x in get_args(ColourClass)],
        name="Diffuse Colour Class",
-        update=update_shader_graph,
+        update=update_diffuse_colour,
    )
    diffuse_colour: bpy.props.FloatVectorProperty(
-        name="Diffuse Colour", subtype="COLOR", default=(1, 1, 1), min=0.0, max=1.0, size=3, update=update_shader_graph
+        name="Diffuse Colour",
+        subtype="COLOR",
+        default=(1, 1, 1),
+        min=0.0,
+        max=1.0,
+        size=3,
+        update=update_diffuse_colour,
    )
    diffuse_colour_ratio: bpy.props.FloatProperty(
-        name="Diffuse Ratio", default=0.0, min=0.0, max=1.0, update=update_shader_graph
+        name="Diffuse Ratio", default=0.0, min=0.0, max=1.0, update=update_diffuse_colour
    )
-    is_specular_colour_null: BoolProperty(name="Is Null")
+    is_specular_colour_null: BoolProperty(name="Is Null", update=update_shader_graph)
    specular_colour_class: EnumProperty(
        items=[(x, x, "") for x in get_args(ColourClass)],
        name="Specular Colour Class",
-        update=update_shader_graph,
+        update=update_specular_colour,
        default="IfcNormalisedRatioMeasure",
    )
    specular_colour: bpy.props.FloatVectorProperty(
@@ -248,7 +266,7 @@ class BIMStylesProperties(PropertyGroup):
        min=0.0,
        max=1.0,
        size=3,
-        update=update_shader_graph,
+        update=update_specular_colour,
    )
    specular_colour_ratio: bpy.props.FloatProperty(
        name="Specular Ratio",
@@ -256,16 +274,16 @@ class BIMStylesProperties(PropertyGroup):
        default=0.0,
        min=0.0,
        max=1.0,
-        update=update_shader_graph,
+        update=update_specular_colour,
    )
-    is_specular_highlight_null: BoolProperty(name="Is Null")
+    is_specular_highlight_null: BoolProperty(name="Is Null", update=update_shader_graph)
    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_shader_graph,
+        update=update_specular_highlight_value,
    )
    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()  # pyright: ignore[reportRedeclaration]
+    parent_system_id: bpy.props.IntProperty()

    if TYPE_CHECKING:
        parent_system_id: int
@@ -26,16 +26,16 @@ from bpy.types import PropertyGroup


 class WebProperties(PropertyGroup):
-    webserver_port: IntProperty(  # pyright: ignore[reportRedeclaration]
+    webserver_port: IntProperty(
        name="Webserver Port",
        min=0,
        max=65535,
    )
-    is_running: BoolProperty(  # pyright: ignore[reportRedeclaration]
+    is_running: BoolProperty(
        name="Webserver Running Status",
        default=False,
    )
-    is_connected: BoolProperty(  # pyright: ignore[reportRedeclaration]
+    is_connected: BoolProperty(
        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")  # pyright: ignore[reportRedeclaration]
+    attribute_data_path: bpy.props.StringProperty(name="Data Path")
    """Full data path to `Attribute`/string property."""
-    use_relative_path: bpy.props.BoolProperty(  # pyright: ignore[reportRedeclaration]
+    use_relative_path: bpy.props.BoolProperty(
        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"})  # pyright: ignore[reportRedeclaration]
+    uninstall: bpy.props.BoolProperty(options={"SKIP_SAVE"})

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

    if TYPE_CHECKING:
        data_path: str
@@ -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)  # pyright: ignore[reportRedeclaration]
+    subitems_values: CollectionProperty(type=StrProperty)

    # 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()  # pyright: ignore[reportRedeclaration]
+    use_explorer_ui: BoolProperty()
    metadata: StringProperty(name="Metadata", description="For storing some additional information about the attribute")
    update: StringProperty(name="Update", description="Custom update function to be executed")

@@ -665,7 +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(  # pyright: ignore[reportRedeclaration]
+    should_always_cache: BoolProperty(
        name="Always Cache Geometry",
        description="Whether to always cache geometry regardless of 'Cache' setting during Advanced Project Load.",
    )
@@ -51,21 +51,11 @@ def add_instance_flooring_covering_from_cursor(
    if isinstance(space_polygon, str):
        return

-    bm = spatial.get_bmesh_from_polygon(space_polygon, h=0, polygon_is_si=True)
-    name = "Covering"
-    mesh = spatial.get_named_mesh_from_bmesh(name=name, bmesh=bm)
-
-    obj = spatial.get_named_obj_from_mesh(name, mesh)
-
+    obj = spatial.create_object("Covering")
    spatial.set_obj_origin_to_cursor_position_and_zero_elevation(obj)
    spatial.translate_obj_to_z_location(obj, z)
-    points = spatial.get_2d_vertices_from_obj(obj)
-    points = spatial.get_scaled_2d_vertices(points)
    spatial.assign_type_to_obj(obj)
-
-    spatial.assign_swept_area_outer_curve_from_2d_vertices(obj, vertices=points)
-    body = spatial.get_body_representation(obj)
-    spatial.regen_obj_representation(obj, body)
+    spatial.set_covering_representation_from_polygon(obj, space_polygon, polygon_is_si=True)


 def add_instance_ceiling_covering_from_cursor(
@@ -95,21 +85,11 @@ def add_instance_ceiling_covering_from_cursor(
    if isinstance(space_polygon, str):
        return

-    bm = spatial.get_bmesh_from_polygon(space_polygon, h=0, polygon_is_si=True)
-    name = "Covering"
-    mesh = spatial.get_named_mesh_from_bmesh(name=name, bmesh=bm)
-
-    obj = spatial.get_named_obj_from_mesh(name, mesh)
-
+    obj = spatial.create_object("Covering")
    spatial.set_obj_origin_to_cursor_position_and_zero_elevation(obj)
    spatial.translate_obj_to_z_location(obj, z + ceiling_height)
-    points = spatial.get_2d_vertices_from_obj(obj)
-    points = spatial.get_scaled_2d_vertices(points)
    spatial.assign_type_to_obj(obj)
-
-    spatial.assign_swept_area_outer_curve_from_2d_vertices(obj, vertices=points)
-    body = spatial.get_body_representation(obj)
-    spatial.regen_obj_representation(obj, body)
+    spatial.set_covering_representation_from_polygon(obj, space_polygon, polygon_is_si=True)


 def regen_selected_covering_object(root: type[tool.Root], spatial: type[tool.Spatial]) -> None:
@@ -127,19 +107,7 @@ def regen_selected_covering_object(root: type[tool.Root], spatial: type[tool.Spa
    if isinstance(space_polygon, str):
        return

-    bm = spatial.get_bmesh_from_polygon(space_polygon, h=0, polygon_is_si=True)
-
-    name = "Aux"
-    mesh = spatial.get_named_mesh_from_bmesh(name=name, bmesh=bm)
-    mesh = spatial.get_transformed_mesh_from_local_to_global(mesh)
-    obj = spatial.get_named_obj_from_mesh(name, mesh)
-
-    points = spatial.get_2d_vertices_from_obj(obj)
-    points = spatial.get_scaled_2d_vertices(points)
-
-    spatial.assign_swept_area_outer_curve_from_2d_vertices(active_obj, vertices=points)
-    body = spatial.get_body_representation(active_obj)
-    spatial.regen_obj_representation(active_obj, body)
+    spatial.set_covering_representation_from_polygon(active_obj, space_polygon, polygon_is_si=True)


 # TODO CHECK IF IT IS POSSIBLE TO CREATE ONLY ONE CORE FUNCTION FOR _FROM_WALLS
@@ -151,22 +119,13 @@ def add_instance_flooring_coverings_from_walls(root: type[tool.Root], spatial: t
    union = spatial.get_union_shape_from_selected_objects()
    for i, linear_ring in enumerate(union.interiors):
        poly = spatial.get_buffered_poly_from_linear_ring(linear_ring)
-        bm = spatial.get_bmesh_from_polygon(poly, h=0, polygon_is_si=False)

        name = "Covering" + str(i)
-        obj = spatial.get_named_obj_from_bmesh(name, bmesh=bm)
-
-        spatial.set_obj_origin_to_bboxcenter(obj)
+        obj = spatial.create_object(name)
+        spatial.set_obj_origin_to_polygon_center(obj, poly, polygon_is_si=False)
        spatial.translate_obj_to_z_location(obj, z)
-
-        points = spatial.get_2d_vertices_from_obj(obj)
-        points = spatial.get_scaled_2d_vertices(points)
-
        spatial.assign_type_to_obj(obj)
-
-        spatial.assign_swept_area_outer_curve_from_2d_vertices(obj, vertices=points)
-        body = spatial.get_body_representation(obj)
-        spatial.regen_obj_representation(obj, body)
+        spatial.set_covering_representation_from_polygon(obj, poly, polygon_is_si=False)


 def add_instance_ceiling_coverings_from_walls(
@@ -179,22 +138,13 @@ def add_instance_ceiling_coverings_from_walls(
    union = spatial.get_union_shape_from_selected_objects()
    for i, linear_ring in enumerate(union.interiors):
        poly = spatial.get_buffered_poly_from_linear_ring(linear_ring)
-        bm = spatial.get_bmesh_from_polygon(poly, h=0, polygon_is_si=False)

        name = "Covering" + str(i)
-        obj = spatial.get_named_obj_from_bmesh(name, bmesh=bm)
-
-        spatial.set_obj_origin_to_bboxcenter(obj)
+        obj = spatial.create_object(name)
+        spatial.set_obj_origin_to_polygon_center(obj, poly, polygon_is_si=False)
        spatial.translate_obj_to_z_location(obj, z)
-
-        points = spatial.get_2d_vertices_from_obj(obj)
-        points = spatial.get_scaled_2d_vertices(points)
-
        spatial.assign_type_to_obj(obj)
-
-        spatial.assign_swept_area_outer_curve_from_2d_vertices(obj, vertices=points)
-        body = spatial.get_body_representation(obj)
-        spatial.regen_obj_representation(obj, body)
+        spatial.set_covering_representation_from_polygon(obj, poly, polygon_is_si=False)


 class NoDefaultContainer(Exception):
@@ -56,42 +56,50 @@ def discard_uncommitted(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc]) -> None:
    ifcgit.load_project(path_ifc)


-def commit_changes(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], repo: git.Repo) -> None:
+def commit_changes(
+    ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], commit_message: str, new_branch_name: str = ""
+) -> None:
    """Commit and create new branches as required"""
    path_ifc = ifc.get_path()

-    if repo.head.is_detached:
-        ifcgit.git_commit(path_ifc)
-        ifcgit.create_new_branch()
+    if ifcgit.is_head_detached():
+        ifcgit.git_commit(path_ifc, commit_message)
+        ifcgit.create_new_branch(new_branch_name)
    else:
-        ifcgit.checkout_new_branch(path_ifc)
-        ifcgit.git_commit(path_ifc)
+        if new_branch_name:
+            ifcgit.checkout_new_branch(path_ifc, new_branch_name)
+        ifcgit.git_commit(path_ifc, commit_message)


-def add_tag(ifcgit: type[tool.IfcGit], repo: git.Repo) -> None:
-    ifcgit.add_tag(repo)
+def add_tag(ifcgit: type[tool.IfcGit], repo: git.Repo, hexsha: str, tag_name: str, tag_message: str = "") -> None:
+    ifcgit.add_tag(repo, hexsha, tag_name, tag_message)


 def delete_tag(ifcgit: type[tool.IfcGit], repo: git.Repo, tag_name: git.TagReference) -> None:
    ifcgit.delete_tag(repo, tag_name)


-def add_remote(ifcgit: type[tool.IfcGit], repo: git.Repo) -> None:
-    ifcgit.add_remote(repo)
+def add_remote(ifcgit: type[tool.IfcGit], repo: git.Repo, remote_name: str, remote_url: str) -> None:
+    ifcgit.add_remote(repo, remote_name, remote_url)


-def delete_remote(ifcgit: type[tool.IfcGit], repo: git.Repo) -> None:
-    ifcgit.delete_remote(repo)
+def delete_remote(ifcgit: type[tool.IfcGit], repo: git.Repo, remote_name: str) -> None:
+    ifcgit.delete_remote(repo, remote_name)
+
+
+def rename_branch(ifcgit: type[tool.IfcGit], repo: git.Repo, new_name: str) -> None:
+    ifcgit.rename_branch(repo, new_name)


 def push(ifcgit: type[tool.IfcGit], repo: git.Repo, remote_name: str, operator: bpy.types.Operator) -> None:
-    error_message = ifcgit.push(repo, remote_name, repo.active_branch.name)
+    error_message = ifcgit.push(repo, remote_name, ifcgit.get_active_branch_name())
    if error_message:
        operator.report({"ERROR"}, error_message)


-def refresh_revision_list(ifcgit: type[tool.IfcGit], repo: git.Repo, ifc: type[tool.Ifc]) -> None:
-    if repo.heads:
+def refresh_revision_list(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc]) -> None:
+    ifcgit.clear_merge_conflicts()
+    if ifcgit.repo_has_commits():
        ifcgit.refresh_revision_list(ifc.get_path())


@@ -125,10 +133,76 @@ def switch_revision(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc]) -> None:
    ifcgit.decolourise()


-def merge_branch(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], operator: bpy.types.Operator) -> None:
+def merge_branch(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], operator: bpy.types.Operator) -> bool | None:
    path_ifc = ifc.get_path()
    ifcgit.config_ifcmerge()
-    ifcgit.execute_merge(path_ifc, operator)
+
+    branch_name = ifcgit.get_selected_branch()
+    if branch_name is None:
+        return
+
+    mergetool = ifcgit.get_merge_tool(branch_name)
+    merge_result = ifcgit.git_merge(branch_name)
+
+    if merge_result == "error":
+        operator.report({"ERROR"}, "Unknown IFC Merge failure")
+        return False
+    elif merge_result == "conflict":
+        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")
+            return False
+        ifcgit.commit_merge(path_ifc)
+
+    ifcgit.clear_merge_conflicts()
+    ifcgit.set_display_branch()
+    ifcgit.git_checkout(path_ifc)
+    ifcgit.load_project(path_ifc)
+    ifcgit.refresh_revision_list(path_ifc)
+    ifcgit.decolourise()
+
+
+def dry_run_merge(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], operator: bpy.types.Operator) -> None:
+    path_ifc = ifc.get_path()
+    ifcgit.config_ifcmerge()
+
+    branch_name = ifcgit.get_selected_branch()
+    if branch_name is None:
+        return
+
+    mergetool = ifcgit.get_merge_tool(branch_name)
+    merge_result = ifcgit.git_merge_no_commit(branch_name)
+
+    if merge_result == "error":
+        try:
+            ifcgit.git_merge_abort()
+        except Exception:
+            pass
+        operator.report({"ERROR"}, "Unknown IFC Merge failure")
+        return
+
+    if merge_result == "conflict":
+        conflicts = ifcgit.git_mergetool(mergetool, path_ifc)
+        ifcgit.git_merge_abort()
+        if conflicts is not None:
+            ifcgit.store_merge_conflicts(conflicts)
+            operator.report({"WARNING"}, "Merge preview: conflicts found — see the panel below")
+        else:
+            ifcgit.clear_merge_conflicts()
+            operator.report({"INFO"}, "Merge preview: no conflicts")
+    else:
+        # Clean merge or already up to date — abort the pending merge state if any
+        try:
+            ifcgit.git_merge_abort()
+        except Exception:
+            pass
+        ifcgit.clear_merge_conflicts()
+        operator.report({"INFO"}, "Merge preview: no conflicts")


 def entity_log(ifcgit: type[tool.IfcGit], ifc: type[tool.Ifc], step_id: int, operator: bpy.types.Operator) -> None:
@@ -145,5 +219,9 @@ def install_git(ifcgit: type[tool.IfcGit], operator: bpy.types.Operator) -> None
        print("install_git() not implemented")


+def fetch(ifcgit: type[tool.IfcGit], remote_name: str) -> None:
+    ifcgit.fetch(remote_name)
+
+
 def run_git_diff(ifcgit: type[tool.IfcGit], operator: bpy.types.Operator, save_to_temp: bool) -> None:
    ifcgit.run_git_diff(operator, save_to_temp)
@@ -219,13 +219,8 @@ def generate_space(
        else:
            assert space_polygon

-    bm = spatial.get_bmesh_from_polygon(space_polygon, h=h, polygon_is_si=True)
-
-    mesh = spatial.get_named_mesh_from_bmesh(name="Space", bmesh=bm)
-
    if element and element.is_a("IfcSpace"):
-        mesh = spatial.get_transformed_mesh_from_local_to_global(mesh)
-        spatial.edit_active_space_obj_from_mesh(mesh)
+        spatial.set_space_representation_from_polygon(active_obj, element, space_polygon, h, polygon_is_si=True)
        spatial.translate_obj_to_z_location(active_obj, z)
    else:
        if relating_type:
@@ -233,12 +228,13 @@ def generate_space(
        else:
            name = "Space"

-        obj = spatial.get_named_obj_from_mesh(name, mesh)
+        obj = spatial.create_object(name)
        spatial.set_obj_origin_to_cursor_position_and_zero_elevation(obj)
        spatial.translate_obj_to_z_location(obj, z)
        spatial.assign_ifcspace_class_to_obj(obj)

        element = ifc.get_entity(obj)
+        spatial.set_space_representation_from_polygon(obj, element, space_polygon, h, polygon_is_si=True)

        if relating_type:
            spatial.assign_relating_type_to_element(ifc, type, element, relating_type)
@@ -257,16 +253,16 @@ def generate_spaces_from_walls(
    for i, linear_ring in enumerate(union.interiors):
        poly = spatial.get_buffered_poly_from_linear_ring(linear_ring)

-        bm = spatial.get_bmesh_from_polygon(poly, h, polygon_is_si=False)
-
        name = "Space" + str(i)

-        obj = spatial.get_named_obj_from_bmesh(name, bmesh=bm)
-
-        spatial.set_obj_origin_to_bboxcenter_and_zero_elevation(obj)
+        obj = spatial.create_object(name)
+        spatial.set_obj_origin_to_polygon_center(obj, poly, polygon_is_si=False)
        spatial.translate_obj_to_z_location(obj, z)
        spatial.assign_ifcspace_class_to_obj(obj)

+        element = ifc.get_entity(obj)
+        spatial.set_space_representation_from_polygon(obj, element, poly, h, polygon_is_si=False)
+

 def toggle_space_visibility(ifc: type[tool.Ifc], spatial: type[tool.Spatial]) -> None:
    model = ifc.get()
@@ -535,6 +535,60 @@ class Ifc:
    def get_all_element_occurrences(cls, element): pass


+@interface
+class IfcGit:
+    def add_file_to_repo(cls, repo, path_file): pass
+    def add_remote(cls, repo, remote_name, remote_url): pass
+    def add_tag(cls, repo, hexsha, tag_name, tag_message): pass
+    def branches_by_hexsha(cls, repo): pass
+    def checkout_new_branch(cls, path_file, branch_name): pass
+    def clear_commits_list(cls): pass
+    def clone_repo(cls, remote_url, local_folder): pass
+    def colourise(cls, step_ids): pass
+    def config_ifcmerge(cls): pass
+    def create_new_branch(cls, branch_name): pass
+    def decolourise(cls): pass
+    def delete_remote(cls, repo, remote_name): pass
+    def delete_tag(cls, repo, tag_name): pass
+    def dos2unix(cls, path_file): pass
+    def commit_merge(cls, path_ifc): pass
+    def entity_log(cls, path_ifc, step_id): pass
+    def fetch(cls, remote_name): pass
+    def get_commits_list(cls, path_ifc, lookup): pass
+    def get_merge_tool(cls, branch_name): pass
+    def get_selected_branch(cls): pass
+    def git_merge(cls, branch_name): pass
+    def git_merge_abort(cls): pass
+    def git_merge_no_commit(cls, branch_name): pass
+    def git_mergetool(cls, mergetool, path_ifc): pass
+    def store_merge_conflicts(cls, conflicts): pass
+    def clear_merge_conflicts(cls): pass
+    def get_merge_conflicts(cls): pass
+    def set_display_branch(cls): pass
+    def get_active_branch_name(cls): pass
+    def get_ifcgit_props(cls): pass
+    def get_modified_step_ids(cls, step_ids): pass
+    def get_path_dir(cls, path_ifc): pass
+    def get_revisions_step_ids(cls): pass
+    def is_head_detached(cls): pass
+    def repo_has_commits(cls): pass
+    def git_checkout(cls, path_file): pass
+    def git_commit(cls, path_file, commit_message): pass
+    def ifc_diff_ids(cls, repo, hash_a, hash_b, path_ifc): pass
+    def init_repo(cls, path_dir): pass
+    def install_git_windows(cls, operator): pass
+    def is_valid_ref_format(cls, string): pass
+    def load_anyifc(cls, repo): pass
+    def load_project(cls, path_ifc): pass
+    def push(cls, repo, remote_name, branch_name): pass
+    def refresh_revision_list(cls, path_ifc): pass
+    def repo_from_path(cls, path): pass
+    def run_git_diff(cls, operator, save_to_temp): pass
+    def switch_to_revision_item(cls): pass
+    def tags_by_hexsha(cls, repo): pass
+    def update_step_ids(cls, step_ids, modified_step_ids): pass
+
+
@interface
 class Layer:
    pass
@@ -999,14 +1053,12 @@ class Spatial:
    def get_purged_inner_holes_poly(cls, union_geom, min_area): pass
    def get_poly_valid_interior_list(cls, poly, min_area, interiors_list): pass
    def get_buffered_poly_from_linear_ring(cls, linear_ring): pass
-    def get_bmesh_from_polygon(cls, poly, h, polygon_is_si=False): pass
-    def get_named_obj_from_bmesh(cls, name, bmesh): pass
-    def get_named_obj_from_mesh(cls, name, mesh): pass
-    def get_named_mesh_from_bmesh(cls, name, bmesh): pass
-    def get_transformed_mesh_from_local_to_global(cls, mesh): pass
-    def edit_active_space_obj_from_mesh(cls, mesh): pass
-    def set_obj_origin_to_bboxcenter(cls, obj): pass
-    def set_obj_origin_to_bboxcenter_and_zero_elevation(cls, obj): pass
+    def get_2d_vertices_from_polygon(cls, poly, obj, polygon_is_si=True): pass
+    def set_extrusion_representation_from_polygon(cls, obj, element, poly, depth_ifc, polygon_is_si=True): pass
+    def set_space_representation_from_polygon(cls, obj, element, poly, h, polygon_is_si=True): pass
+    def set_covering_representation_from_polygon(cls, obj, poly, polygon_is_si=True): pass
+    def create_object(cls, name): pass
+    def set_obj_origin_to_polygon_center(cls, obj, poly, polygon_is_si=True): pass
    def set_obj_origin_to_cursor_position_and_zero_elevation(cls, obj): pass
    def get_selected_objects(cls): pass
    def get_active_obj(cls): pass
@@ -1014,14 +1066,9 @@ class Spatial:
    def get_active_obj_height(cls): pass
    def get_relating_type_id(cls): pass
    def translate_obj_to_z_location(cls, obj, z): pass
-    def get_2d_vertices_from_obj(cls, obj): pass
-    def get_scaled_2d_vertices(cls, points): pass
-    def assign_swept_area_outer_curve_from_2d_vertices(cls, obj, vertices): pass
-    def get_body_representation(cls, obj): pass
    def assign_ifcspace_class_to_obj(cls, obj): pass
    def assign_type_to_obj(cls, obj): pass
    def assign_relating_type_to_element(cls, ifc, type, element, relating_type): pass
-    def regen_obj_representation(cls, obj, body): pass
    def toggle_spaces_visibility_wired_and_textured(cls, spaces): pass
    def toggle_hide_spaces(cls, spaces): pass
    def set_default_container(cls, container): pass
@@ -49,21 +49,40 @@ class Aggregate(bonsai.core.tool.Aggregate):
        related_object = tool.Ifc.get_entity(related_obj)
        if not relating_object or not related_object:
            return False
+        if relating_object == related_object:
+            return False
+
+        is_compatible_class = False
        if (relating_object.is_a("IfcElement") or relating_object.is_a("IfcElementType")) and related_object.is_a(
            "IfcElement"
        ):
-            return True
-        if tool.Ifc.get_schema() == "IFC2X3":
+            is_compatible_class = True
+        elif tool.Ifc.get_schema() == "IFC2X3":
            if relating_object.is_a("IfcSpatialStructureElement") and related_object.is_a("IfcSpatialStructureElement"):
-                return True
-            if relating_object.is_a("IfcProject") and related_object.is_a("IfcSpatialStructureElement"):
-                return True
+                is_compatible_class = True
+            elif relating_object.is_a("IfcProject") and related_object.is_a("IfcSpatialStructureElement"):
+                is_compatible_class = True
        else:
            if relating_object.is_a("IfcSpatialElement") and related_object.is_a("IfcSpatialElement"):
-                return True
-            if relating_object.is_a("IfcProject") and related_object.is_a("IfcSpatialElement"):
-                return True
-        return False
+                is_compatible_class = True
+            elif relating_object.is_a("IfcProject") and related_object.is_a("IfcSpatialElement"):
+                is_compatible_class = True
+
+        if not is_compatible_class:
+            return False
+
+        # Prevent cyclic references: walk up the full hierarchy from the
+        # proposed parent and reject if we encounter the proposed child.
+        ancestor = ifcopenshell.util.element.get_parent(relating_object)
+        seen = {relating_object}
+        while ancestor:
+            if ancestor == related_object:
+                return False
+            if ancestor in seen:
+                break
+            seen.add(ancestor)
+            ancestor = ifcopenshell.util.element.get_parent(ancestor)
+        return True

    @classmethod
    def has_physical_body_representation(cls, element: ifcopenshell.entity_instance) -> bool:
@@ -987,7 +987,8 @@ class Cost(bonsai.core.tool.Cost):
    def disable_editing_cost_item_parent(cls) -> None:
        props = cls.get_cost_props()
        props.active_cost_item_id = 0
-        props.change_cost_item_parent = False
+        if props.change_cost_item_parent == True:
+            props.change_cost_item_parent = False

    @classmethod
    def load_cost_item_quantities(cls, cost_item: Optional[ifcopenshell.entity_instance] = None) -> None:
@@ -857,6 +857,8 @@ class Drawing(bonsai.core.tool.Drawing):

    @classmethod
    def edit_text_literals(cls, obj: bpy.types.Object, literal_attributes: dict) -> None:
+        if not literal_attributes:
+            return
        assert (element := tool.Ifc.get_entity(obj))
        assert (rep := cls.get_annotation_representation(element))
        to_remove = [i for i in rep.Items if i.is_a("IfcTextLiteral")]
@@ -1754,6 +1756,10 @@ class Drawing(bonsai.core.tool.Drawing):
            # For section/elevation views, elevate the segment vertically
            if not (points := helper.elevate_segment(bounds, [v1, v2])):
                return
+        elif target_view == "MODEL_VIEW":
+            # For model views, clip to XY bounds and keep Z (3D line at true elevation)
+            if not (points := helper.clip_segment(bounds, [v1, v2])):
+                return
        else:
            return

@@ -1407,8 +1407,6 @@ class Geometry(bonsai.core.tool.Geometry):
        :param representation_item: item to remove.
        :param element: item's element. Is used to unmark manual booleans.
        """
-        # NOTE: we assume it's not the last representation item
-        # otherwise we probably would need to remove representation too
        # NOTE: a lot of shared code with `geometry.remove_representation`
        ifc_file = tool.Ifc.get()
        shape_aspects: list[ifcopenshell.entity_instance] = []
@@ -1467,7 +1465,10 @@ class Geometry(bonsai.core.tool.Geometry):
            cls.remove_representation_items_from_shape_aspect([representation_item], shape_aspect)

        if representation:
-            representation.Items = tuple(set(representation.Items) - {representation_item})
+            new_items = tuple(set(representation.Items) - {representation_item})
+            if not new_items:
+                return
+            representation.Items = new_items
        also_consider = list(consider_inverses)
        ifcopenshell.util.element.remove_deep2(ifc_file, representation_item, also_consider=also_consider)

--- a/Show More
+++ b/Show More
@@ -1 +1 @@
 .8.5
 .8.6