[witbrock]

Merge decision: ready — task creation and retries expose the represented reporting default and explain deliberate overrides without changing reporting authority.

User outcome

Task creators can see both the effective reporting target and the actor-visible immediate supervisor default. An explicit target that differs from an accessible, unambiguous default returns an advisory warning with both targets and their provenance; the explicit choice is preserved.

Material changes

• Share derived reporting diagnostics across canonical creation, point reads and fingerprint retry lookup.
• Document omission semantics and diagnostic fields in the task_create/task_get output contract and task_create description.
• Keep unresolved default identities private and omit mismatch warnings when lookup is unavailable or ambiguous. No default is persisted and existing assignment/reporting authority checks remain unchanged.

Evidence

115 targeted tests passed across reporting diagnostics, canonical task management, MCP direct-message/task tools, task continuation and controller supervision. The new tests exercise the actual MCP create handler and canonical services against an isolated mock database, including retries, private-default visibility and scope denial. Ruff on the reporting service/new tests and git diff --check passed.

Ship boundary

Minimum criteria: matching, differing, omitted and unavailable defaults behave consistently on create/read/retry; overrides remain intact. Incorrect warnings, disclosure of private default identities or changed reporting authority would block delivery.

Live ontology configuration and public runtime behaviour were not validated. Deployment and changing worker message routing are outside this assignment; no deployment is requested.