Update API layer for scheduler integration:
- WebSocket handlers with scheduler protocol support
- Jobs WebSocket endpoint with priority queue integration
- Validation middleware for scheduler messages
- Server configuration with security hardening
- Protocol definitions for worker-scheduler communication
- Dataset handlers with tenant isolation checks
- Response helpers with audit context
- OpenAPI spec updates for new endpoints
- Fix YAML tags in auth config struct (json -> yaml)
- Update CLI configs to use pre-hashed API keys
- Remove double hashing in WebSocket client
- Fix port mapping (9102 -> 9103) in CLI commands
- Update permission keys to use jobs:read, jobs:create, etc.
- Clean up all debug logging from CLI and server
- All user roles now authenticate correctly:
* Admin: Can queue jobs and see all jobs
* Researcher: Can queue jobs and see own jobs
* Analyst: Can see status (read-only access)
Multi-user authentication is now fully functional.
