setup-env.sh:
- Each provider choice now sets its *_ENABLEED=true flag explicitly
- All provider fields written to .env (model, base_url, api_key, enabled)
- Shows active provider status in summary
manage-keys.sh:
- Each provider menu sets *_ENABLEED=true when key is added
- Sets *_ENABLEED=false when key is removed
- Writes all required env vars (model, base_url) not just API key
- Shows provider status with enabled/disabled state
- Better organized menu
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>