chore: untrack .local/ + add to .gitignore

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: chris-mclennan-tttl

.gitignore

@@ -2,3 +2,4 @@
 .claude/settings.local.json
 .claude/cache/
 .DS_Store
+.local/