- Add api_keys schema in mana-core-auth with SHA-256 hashing
- Create NestJS module with CRUD endpoints and validation
- Add external auth module to STT/TTS for sk_live_ key validation
- Create web UI page at /api-keys for key management
- Support rate limiting per key with configurable limits
- Cache validation results for 5 minutes to reduce auth service load
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
