chore: Add Python cache to .gitignore and remove from repo

- Add __pycache__/ and Python compiled files to .gitignore
- Remove accidentally committed __pycache__ directory
- Prevent future Python cache files from being tracked

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

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

.gitignore

@@ -1,2 +1,7 @@
 # IDE
 .idea
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class