Remove CLAUDE.md from tracking and update .gitignore

- Remove CLAUDE.md from git tracking while keeping local copy
- Add CLAUDE.md and .claude directory to .gitignore

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

Co-Authored-By: Claude <[email protected]>
Signed-off-by: Matteo Collina <[email protected]>

Author: mcollina

.gitignore

@@ -153,3 +153,9 @@ yarn.lock
 
 **/._*
 **/*.pem
+
+# CLAUDE.md
+CLAUDE.md
+
+# Claude Code directory
+.claude