Ensure pyproject release version matches git tag

Author: ItsDrike

.github/workflows/publish.yml

@@ -37,6 +37,18 @@ jobs:
           # We only need the project dependencies, no development deps
           uv sync --no-default-groups
 
+      - name: Make sure pyproject.toml version matches git version
+        run: |
+          git_version=$(git describe)
+          pyproject_version=$(python -c "import tomllib; print(tomllib.load(open('pyproject.toml', 'rb'))['project']['version'])")
+
+          if [ "$git_verson" != "$pyproject_version" ]; then
+            echo "The version specified in pyproject.toml ($pyproject_version) doesn't match the git version ($git_verson)"
+            echo "You most likely forgot to update pyproject.toml when publishing the release tag"
+            echo "You can fix this by updating the pyproject version and overwriting the git tag"
+            exit 1
+          fi
+
       - name: Build the project
         run: uv build