## Verification Report

**Change**: `2026-04-22-track-4-orchestration-parity-seam`
**Verdict**: PASS WITH WARNINGS

---

### Completeness

| Metric | Value |
|--------|-------|
| Tasks total | 11 |
| Tasks complete | 11 |
| Tasks incomplete | 0 |

All checklist items in `tasks.md` are marked complete.

---

### Verification Scope

Verified against:

- `openspec/changes/2026-04-22-track-4-orchestration-parity-seam/proposal.md`
- `openspec/changes/2026-04-22-track-4-orchestration-parity-seam/specs/multi-agent-orchestration/spec.md`
- `openspec/changes/2026-04-22-track-4-orchestration-parity-seam/design.md`
- `openspec/changes/2026-04-22-track-4-orchestration-parity-seam/tasks.md`

Static evidence reviewed in:

- `clients/agent-runtime/src/agent/coordinator.rs`
- `clients/agent-runtime/src/agent/mailbox.rs`
- `clients/agent-runtime/src/tools/delegate_launch.rs`
- `clients/agent-runtime/src/tools/delegate_inspect.rs`
- `clients/agent-runtime/src/tools/delegate_cancel.rs`
- `clients/agent-runtime/src/tools/delegate.rs`
- `clients/agent-runtime/src/tools/mod.rs`
- `clients/agent-runtime/src/bridge/mod.rs`

---

### Real Execution Evidence

Per instruction to run the smallest relevant evidence, verification used focused Rust tests only.
No build command was run because the user explicitly said **do not build**.

Command executed from the worktree root:

```text
cargo test --manifest-path clients/agent-runtime/Cargo.toml <17 targeted test names>
```

Observed result:

- Exit code: `0`
- Focused targeted tests: `17/17` passed
- Failed targeted tests: `0`
- Skipped targeted tests: `0`

Passing targeted evidence included:

- `tools::delegate_launch::tests::returns_requested_and_enforced_execution_metadata_in_initial_snapshot`
- `tools::delegate_inspect::tests::inspect_surfaces_requested_vs_enforced_metadata_and_lifecycle_events`
- `tools::delegate_launch::tests::mailbox_backed_launch_keeps_handle_and_snapshot_contract`
- `tools::delegate_inspect::tests::mailbox_backed_inspect_remains_process_local`
- `tools::delegate_cancel::tests::mailbox_backed_cancel_does_not_recover_across_services`
- `tools::delegate::tests::supervised_single_child_delegate_remains_compatible_with_shared_orchestration_contract`
- `tools::delegate_launch::tests::rejects_remote_bridge_requests_without_local_fallback`
- `tools::delegate_launch::tests::rejects_unsupported_permission_broker_requests_fail_closed`
- `agent::coordinator::tests::admit_child_normalizes_requested_vs_enforced_execution_metadata`
- `agent::coordinator::tests::admit_child_rejects_remote_bridge_requests_fail_closed`
- `agent::coordinator::tests::admit_child_rejects_unsupported_isolation_requests_fail_closed`
- `agent::coordinator::tests::cancel_envelope_moves_child_into_cancelling_until_terminal_resolution`
- `agent::coordinator::tests::duplicate_redelivery_does_not_duplicate_visible_events`
- `agent::coordinator::tests::terminal_coordinator_state_is_immutable`
- `agent::coordinator::tests::launch_returns_receipt_with_handle`
- `agent::coordinator::tests::inspect_active_run_returns_snapshot`
- `agent::coordinator::tests::cancel_already_terminal_returns_already_terminal_disposition`

Non-blocking execution note:

- Cargo emitted unrelated existing warnings for unused imports in `clients/agent-runtime/src/memory/mod.rs` during the test runs.

---

### Spec Compliance Matrix

| Requirement | Scenario | Evidence | Result |
|-------------|----------|----------|--------|
| Durable Local Orchestration Contract Surface | Launch, inspect, and cancel share one local orchestration contract | `launch_returns_receipt_with_handle`, `inspect_active_run_returns_snapshot`, shared service-backed tool tests, coordinator-owned handle registry | ✅ COMPLIANT |
| Durable Local Orchestration Contract Surface | Existing single-child delegate caller remains compatible | `supervised_single_child_delegate_remains_compatible_with_shared_orchestration_contract` | ✅ COMPLIANT |
| Child Lifecycle State Contract | Inspection distinguishes running from cancelling children | `cancel_envelope_moves_child_into_cancelling_until_terminal_resolution`, explicit `ChildStateView::Cancelling`, cancel visibility tests | ✅ COMPLIANT |
| Child Lifecycle State Contract | Child terminal state remains immutable after inspection updates | `terminal_coordinator_state_is_immutable` | ✅ COMPLIANT |
| Durable Local Handle, Inspect, and Cancel Semantics | Live parent reuses handle for later inspection | `inspect_active_run_returns_snapshot` | ✅ COMPLIANT |
| Durable Local Handle, Inspect, and Cancel Semantics | Cancellation of terminal run is idempotent | `cancel_already_terminal_returns_already_terminal_disposition` | ✅ COMPLIANT |
| Durable Local Handle, Inspect, and Cancel Semantics | Handle authority is unavailable after parent loss | `mailbox_backed_inspect_remains_process_local`, `mailbox_backed_cancel_does_not_recover_across_services` | ✅ COMPLIANT |
| Mailbox Event Visibility and Ordering | Inspection shows deterministic lifecycle visibility despite redelivery | `duplicate_redelivery_does_not_duplicate_visible_events` | ✅ COMPLIANT |
| Mailbox Event Visibility and Ordering | Inspection does not leak mailbox visibility across runs | mailbox endpoint/run isolation in `mailbox.rs`, process-local inspect behavior tests | ✅ COMPLIANT |
| Parent-Owned Approval Propagation and Permission Broker | Unsupported child approval path fails closed | `admit_child_rejects_unsupported_permission_broker_requests_fail_closed`, `rejects_unsupported_permission_broker_requests_fail_closed` | ✅ COMPLIANT |
| Parent-Owned Approval Propagation and Permission Broker | Parent-visible permission-needed status does not grant child authority | approval state model and `WaitingOnParent` are present structurally, but no focused runtime lifecycle-tool test proves pending approval visibility | ⚠️ PARTIAL |
| Execution Metadata and Isolation Contract Boundaries | Inspection preserves normalized requested execution metadata | `returns_requested_and_enforced_execution_metadata_in_initial_snapshot`, `inspect_surfaces_requested_vs_enforced_metadata_and_lifecycle_events` | ✅ COMPLIANT |
| Execution Metadata and Isolation Contract Boundaries | Unsupported stronger isolation request fails closed | `admit_child_rejects_unsupported_isolation_requests_fail_closed` | ✅ COMPLIANT |
| Fail-Closed Remote Bridge Seam | Remote bridge request is rejected without local fallback | `admit_child_rejects_remote_bridge_requests_fail_closed`, `rejects_remote_bridge_requests_without_local_fallback` | ✅ COMPLIANT |
| Fail-Closed Remote Bridge Seam | Remote bridge seam reuses orchestration contract shape | fail-closed rejection is covered, but there is still no focused runtime test proving the exact rejected contract shape “where applicable” | ⚠️ PARTIAL |
| Explicit Non-Goals and Deferred Concerns | Deferred remote session capabilities remain unavailable | metadata-only `bridge/mod.rs`, `session_mode_schema_rejects_deferred_transport_fields`, remote bridge rejection coverage | ✅ COMPLIANT |
| Explicit Non-Goals and Deferred Concerns | Historical mailbox data is not treated as durable orchestration authority | `mailbox_backed_inspect_remains_process_local`, `mailbox_backed_cancel_does_not_recover_across_services` | ✅ COMPLIANT |

**Compliance summary**: 15 compliant / 17 scenarios total, 2 partial, 0 failing, 0 untested-critical.

---

### Correctness (Static — Structural Evidence)

| Requirement | Status | Notes |
|------------|--------|-------|
| Unified orchestration contract | ✅ Implemented | `SupervisedOrchestrationService` owns handle registry and snapshots; delegate lifecycle tools route through the shared supervised contract. |
| Lifecycle visibility and cancelling state | ✅ Implemented | `ChildStateView::Cancelling`, event projection, immutable terminal handling, and parent-owned state transitions are present in `coordinator.rs`. |
| Mailbox-backed local delivery only | ✅ Implemented | `mailbox.rs` remains transport-only storage/delivery for internal envelopes with coordinator-owned visibility. |
| Requested vs enforced metadata split | ✅ Implemented | `NormalizedExecutionRequest`, `EnforcedExecutionGuarantees`, and `ChildExecutionMetadataView` are present and now behaviorally validated on launch and inspect surfaces. |
| Fail-closed approval / isolation / transport validation | ✅ Implemented | `normalize_execution_metadata()` rejects `remote_bridge`, unsupported isolation requests, and unsupported permission broker requests without local fallback. |
| Remote bridge seam only, no Track 6 transport | ✅ Implemented | `bridge/mod.rs` stays metadata-only; no active bridge child runner, reconnect/resume, JWT auth, or remote session implementation was found. |

---

### Coherence (Design)

| Decision | Followed? | Notes |
|----------|-----------|-------|
| Keep orchestration authority in `SupervisedOrchestrationService` + `Coordinator` | ✅ Yes | Matches implementation and test evidence. |
| Treat mailbox as delivery + evidence, not lifecycle authority | ✅ Yes | Inspect/cancel stay tied to live service registry; stale service instances fail closed. |
| Normalize execution metadata into requested vs enforced structures | ✅ Yes | Both structures are implemented and exposed through launch/inspect snapshots. |
| Represent approval as parent-owned broker status only | ✅ Yes | Unsupported broker requests reject before dispatch; approval remains modeled in coordinator state. |
| Model `remote_bridge` as admitted enum with rejected executor path | ✅ Yes | Enum and seam types exist, but execution remains rejected and deferred. |

---

### Issues Found

**CRITICAL**

None.

**WARNING**

1. Parent-visible permission-needed inspection behavior is modeled structurally, but verification did not find a focused runtime test proving a lifecycle-tool snapshot with `WaitingOnParent` / pending approval state.
2. Remote-bridge rejection is fail-closed and covered, but verification did not find a focused runtime test proving the exact rejected orchestration-contract shape for the deferred seam scenario.
3. Test runs still emit unrelated warnings from `clients/agent-runtime/src/memory/mod.rs` unused imports, so the verification run is not warning-clean.

**SUGGESTION**

1. Add a focused lifecycle-tool test that drives `RequestApproval` and verifies parent-visible pending approval state in inspect output.
2. Add a focused rejected-launch test that asserts the exact error/metadata contract shape for `remote_bridge` rejections.

---

### State Update Decision

`state.yaml` **can advance to verify complete** because the prior critical metadata-launch failure is resolved and targeted runtime verification now passes. Remaining issues are warnings, not blockers.
