- Preserve provider credentials, aliases, headers, and network settings during migration
- Normalize Claude cloak metadata and repair previously saved invalid types
- Use streaming Gemini health probes and honor group and key proxy settings
- Retain Codex customizations for temporarily unavailable models
- Add regression tests for migration, metadata, proxy routing, and catalog persistence
- Use native v8 routes for credentials, models, OAuth, and API calls
- Remove implicit legacy endpoint and response transformations
- Serialize OAuth exclusion updates while preserving other providers
- Send YAML as raw text and preserve explicit null request bodies
- Update mocks and regression tests, including migrated Claude aliases
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