C-2 (CRITICAL): JWT decode_token now validates aud, iss, iat, jti claims.
Tokens without these claims are rejected. Audience 'ss-tools-api' and
issuer 'ss-tools' prevent cross-service token reuse.
H-2 (HIGH): Server-side JWT revocation via token_blacklist table.
- New TokenBlacklist model (SHA-256 hash only, never raw token)
- blacklist_token() on logout — revokes current session
- is_token_blacklisted() check in get_current_user
- Expired entries auto-pruned via _prune_blacklist()
H-3 (HIGH): Encryption key auto-generation removed — crash-early instead.
Previously, ensure_encryption_key() would auto-generate a Fernet key
on first run and write it to .env. This made encrypted data unrecoverable
when the key changed between deployments. Now raises RuntimeError with
a clear command to generate the key explicitly.
Also: update orthogonal security test for crash-early behavior.
Introduce a new API key authentication mechanism to support service-to-service
communication (e.g., Airflow, CI/CD) without browser-based JWT login.
- Add `APIKey` model and `APIKeyPrincipal` dependency for RBAC.
- Implement `require_api_key_or_jwt` dependency with environment scoping.
- Add admin CRUD endpoints for API key lifecycle management.
- Add API key management UI in System Settings.
- Update maintenance API to support explicit `environment_id` and API key auth.
- Add i18n support for API keys and connection settings.
- Include Python and Bash usage examples in the `examples/` directory.
- Update technical specifications and documentation.
- Added plugin base and loader for backend extensibility
- Implemented application settings management with config persistence
- Created Svelte-based frontend with Dashboard and Settings pages
- Added API routes for plugins, tasks, and settings
- Updated documentation and specifications
- Improved project structure and developer tools
