fix: Add _version.py to .gitignore and handle in workflow

- Add src/weather_mcp/_version.py to .gitignore
- Remove _version.py from git tracking (should be generated)
- Add git update-index --skip-worktree in workflow to prevent dirty state
- Resolves version mismatch caused by modified version file during build

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: turbomam

.github/workflows/publish.yml

@@ -58,7 +58,10 @@ jobs:
         run: uv tool install hatch
 
       - name: Build package with hatch
-        run: hatch build
+        run: |
+          # Tell git to ignore version file changes during build
+          git update-index --skip-worktree src/weather_mcp/_version.py || true
+          hatch build
 
       - name: Check package
         run: |

.gitignore

@@ -191,6 +191,9 @@ cython_debug/
 # Ruff stuff:
 .ruff_cache/
 
+# hatch-vcs generated version file
+src/weather_mcp/_version.py
+
 # PyPI configuration file
 .pypirc