Remove .claude directory from repository

- Remove .claude/settings.local.json from git tracking
- Add .claude/ to .gitignore to prevent future tracking
- Keep .claude directory locally for Claude Code functionality

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

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

.gitignore

@@ -17,6 +17,7 @@ venv/
 .env
 
 # IDE
+.claude/
 .vscode/
 .idea/
 *.swp
@@ -25,3 +26,4 @@ venv/
 # OS
 .DS_Store
 Thumbs.db
+.claude/