AgentSession::addArtifact expects ?array $metadata in the third
argument slot; the MCP tool was passing the optional description
string directly, producing a TypeError whenever a caller supplied a
non-null description. Wrap the description into a metadata array so
the call matches the model signature, and add a feature test that
exercises the MCP handler end-to-end to prevent regression.
Closes tasks.lthn.sh/view.php?id=95
Co-authored-by: Codex <noreply@openai.com>
Co-Authored-By: Virgil <virgil@lethean.io>
Phase 2 of Core DI migration:
- Add *core.Core field + SetCore() to PrepSubsystem and monitor.Subsystem
- Register agentic/monitor/brain as Core services with lifecycle hooks
- Mark SetCompletionNotifier and SetNotifier as deprecated (removed in Phase 3)
- Fix monitor test to match actual event names
- initServices() now wires Core refs before legacy callbacks
Co-Authored-By: Virgil <virgil@lethean.io>
