chore: Add .claude/ to .gitignore

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

Author: louis-pre

.gitignore

@@ -5,6 +5,9 @@
 # For more details, visit the project page:
 # https://github.com/github/gitignore
 
+# Claude Code
+.claude/
+
 # TypeScript build output
 *.d.ts
 *.js