- driver/registry.py never actually defined register_driver_type, so
the plugin-system's 'driver plugin registered successfully' scenario
was unreachable in production (only simulated via test monkeypatch).
Added a real implementation wired into the existing driver factory
registry.
- PluginRegistry.discover() only caught PluginValidationError/
DuplicatePluginError, so a driver-kind manifest that failed wiring
(DriverRegistryUnavailableError/PluginTargetResolutionError) aborted
the whole scan, silently skipping co-located tool/skill manifests.
Now caught and skipped per manifest instead.
openspec: plugin-system capability, archived change cloud-runtime
q792602257