chore: Add .claude/ to gitignore

Exclude Claude Code personal configuration directory containing:
- settings.local.json (personal permissions and local paths)
- skills/ (personal skills)

These contain machine-specific paths and personal preferences
that should not be shared across the team.

.gitignore

@@ -14,6 +14,7 @@ model_cache/
 
 # agent
 .opencode/
+.claude/
 
 # Vue widgets development cache (but keep build output)
 vue-widgets/node_modules/