Restructure the provider management system by separating the monolithic
Provider model into two distinct entities:
- ProviderGroup: defines shared upstream configuration (type, base_url,
google settings, models, status)
- APIKey: represents individual credentials within a group (api_key,
weight, status, auto_ban, ban settings)
This change also updates:
- Binding model to reference GroupID instead of RouteGroup string
- All CRUD handlers for the new provider-group and api-key endpoints
- Sync service to rebuild provider snapshots from joined tables
- Model registry to aggregate capabilities across group/key pairs
- Access handler to validate namespace existence and subset constraints
- Migration importer to handle the new schema structure
- All related tests to use the new model relationships
BREAKING CHANGE: Provider API endpoints replaced with /provider-groups
and /api-keys endpoints; Binding.RouteGroup replaced with Binding.GroupID
Standardize alignment of struct tags in models and field assignments in
services for better readability. Additionally, include the Binding model
in the test database auto-migration.
Implement handlers for creating, listing, and updating model bindings.
Register new routes in the admin server group and add DTO definitions.
Update provider handlers to trigger binding synchronization on changes
to ensure upstream mappings remain current.
