Update Claude settings permissions and clean up database backups

- Add mysql and git add permissions to Claude settings
- Remove old backup files (db_backup_080625_new.sql, db_backup_250608_1035.sql)
- Preserve latest database backup (db_backup_080625.sql)

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

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

.claude/settings.local.json

@@ -14,7 +14,9 @@
       "Bash(docker run:*)",
       "Bash(docker network:*)",
       "Bash(chmod:*)",
-      "Bash(docker-compose up:*)"
+      "Bash(docker-compose up:*)",
+      "Bash(mysql:*)",
+      "Bash(git add:*)"
     ],
     "deny": []
   }