feat: action config service, router endpoints, and full test coverage (Tasks 3.1, 3.2, 3.4)
- ActionConfig extended with active, used_by_jails, source_file, has_local_override
- New models: ActionListResponse, ActionUpdateRequest, ActionCreateRequest, AssignActionRequest
- New service functions: list_actions, get_action, update_action, create_action, delete_action, assign_action_to_jail, remove_action_from_jail
- New error classes: ActionNotFoundError, ActionAlreadyExistsError, ActionReadonlyError, ActionNameError
- New router endpoints: GET/PUT/POST/DELETE /api/config/actions, POST/DELETE /api/config/jails/{name}/action
- Service + router tests: 290 tests passing, mypy strict clean, ruff clean
Lukas
f7cc130432