[witbrock]

Von can lose a pending task's identity across a clarification or interrupted creation, and lexical name resolution currently hides lower-ranked visible alternatives. Extend the existing adaptive turn to retain material questions and source-qualified role facts, checkpoint a stable task key before dispatch, and resume through canonical task reconciliation without duplicating confirmed work.

The candidate adds an owner-bound conversation checkpoint using the existing revision-checked carrier; /generate carries the resulting revision into terminal persistence. Runtime projections preserve dispatched keys through sidecar omission/truncation, and model-written checkpoints cannot fabricate runtime-fact blocks. A conflicted checkpoint preserves the newer carrier until explicit reconciliation, so a stale terminal sidecar cannot undo a cancellation. Existing current-assignee eligibility, scoped assertions, same-task repairs and model/reasoning preferences remain the effect contracts. The existing turn support message now covers material referents, brief replies, cancellation, provenance, scoped role learning and honest pending outcomes.

For Von task #V#task_agent_7cbf944d3d6c7c8a37817aa48ec594ec; implements the bounded candidate specified by design PR #660. The specification requires no new predicate for this slice. Twenty-two synthetic development cases and an extension to the existing minimal-imposition benchmark summariser separate useful completion, missed/unnecessary questions, incorrect/duplicate effects, evidence kind and comparison arm.

Validation: 434 targeted tests pass across adaptive turns, real gateway/native-task fixture continuations, chat carrier CAS, name resolution, scoped assertions, runtime projection, minimal-imposition metrics and /generate persistence. Tests include interruption/retry, cancellation conflict, changed membership, count/settings retention, hidden homonyms, forged runtime claims, later scoped role retrieval and attributed correction. PDM lock check, Python 3.11 grammar check (1,531 files), fixture/link validation and diff checks pass. Tests use isolated mock stores and scripted model responses; they launch no coding worker or external model. Updated the impacted route fixture for the current identity-source/window-context contracts.

Merge decision: ready for the bounded implementation after the applicable CI checks. Stop-ship conditions are lost task keys/cancellation, duplicate or wrong-scope effects, corrupted provenance, or fabricated runtime facts on the affected path; targeted evidence shows none. Live model clarification quality, indexing, latency/cost and prospective role benefit remain unmeasured and are not claimed. The missing originating transcript and live prompt/alias state were not reconstructed. Semantic guidance stays in the existing code-owned turn support; no second governed prompt is introduced.

The new automatic pre-dispatch checkpoint guarantee is limited to owner-bound ordinary turns; stateless and non-owner calls retain their existing route. A revision is not an execution lock; task identity remains canonical. No deployment, live Vontology mutation, schema migration, membership change or infrastructure activation is requested. Rollback is a code revert plus canonical reconciliation of any persisted task keys/receipts.