Add git branch to system info debug output

Include bonsai_git_branch in get_debug_info(). For dev environments
using the GitPython-based update_commit_data() path, the branch is
read from repo.active_branch.name. For built extensions, a 7777777
placeholder is replaced at build time via the Makefile, matching the
existing pattern for bonsai_commit_hash and bonsai_commit_date.

Generated with the assistance of an AI coding tool.

src/bonsai/Makefile

@@ -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
@@ -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
 

src/bonsai/bonsai/__init__.py

@@ -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