asyncpg raises OperationalError (not ValueError) on malformed UUIDs, so
bad artifact ids now 404 and a bad conversation_id 400s before any query.
get_conversation keys artifacts by str(message_id) so matching doesn't
depend on the driver's UUID types.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
stream_query emits the new tool_start/tool_end payloads, maps
on_tool_error to tool_end status=error, and saves an artifact linked to
the tool message. GET /api/conversation/<id> adds tool, label and
artifact to tool messages.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
GET /api/artifacts?conversation_id= lists ArtifactRefs without data;
GET /api/artifacts/<id> returns the full artifact. Both 404 for other
users. create_artifact_from_output persists ToolArtifact dicts and drops
ones over 256 KB serialised.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Pure functions build tool_start/tool_end payloads with run_id, friendly
label, truncated input (config dropped), status, duration and artifact ref.
Labels cover every agent tool, both old and #55 YNAB names, and the
homebox_/bookstack_ MCP prefixes, falling back to "Using <tool>…".
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ryan Chen