- Remove redundant 'config' field from Claude default configuration
* Align with SSOT architecture where Claude only requires 'env' field
* Matches the actual structure used in settings.json
- Update PackyCode provider configuration
* Migrate domain: packycode.com → packyapi.com
* Update API endpoints to new domain structure
* Update load balancer endpoint: api-slb.packycode.com → api-slb.packyapi.com