refactor: Use .gitignore instead of explicit cleanup for versioned docs artifacts

Add gitignore patterns for pyproject.toml and .gitignore inside
website/versioned_docs/ so git add never stages them. This replaces
the explicit rm commands in the workflow since changelog.md, .ruff_cache,
and .ty_cache are already covered by existing patterns.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: vdusek

.github/workflows/manual_version_docs.yaml

@@ -112,13 +112,6 @@ jobs:
           uv run npx docusaurus docs:version "$MAJOR_MINOR"
           uv run npx docusaurus api:version "$MAJOR_MINOR"
 
-          # Clean up non-docs artifacts from the snapshot.
-          rm -f "versioned_docs/version-${MAJOR_MINOR}/changelog.md"
-          rm -f "versioned_docs/version-${MAJOR_MINOR}/pyproject.toml"
-          rm -f "versioned_docs/version-${MAJOR_MINOR}/.gitignore"
-          rm -rf "versioned_docs/version-${MAJOR_MINOR}/.ruff_cache"
-          rm -rf "versioned_docs/version-${MAJOR_MINOR}/.ty_cache"
-
       - name: Commit and push versioned docs
         id: commit_versioned_docs
         uses: EndBug/add-and-commit@v10

.gitignore

@@ -64,6 +64,8 @@ Session.vim
 # Docs
 docs/changelog.md
 website/versioned_docs/*/changelog.md
+website/versioned_docs/*/pyproject.toml
+website/versioned_docs/*/.gitignore
 
 # Website build artifacts, node dependencies
 website/build