# Verification Report: 2026-04-23-track-4-slice-4-coordinator-ux

## Status

PASS

## Executive Summary

Re-ran verification for **Track 4 Slice 4 — Coordinator UX and State Visibility** after the previously observed workspace formatting regression was fixed.

The implementation matches the spec, design, and completed tasks for the targeted runtime surfaces:

- deterministic parent-visible coordinator summary state is implemented;
- blocked / approval-needed child visibility is implemented;
- parent-readable next-action hints are implemented;
- deterministic repeated inspection behavior is covered by targeted tests;
- `delegate_inspect` presents the aggregate summary contract directly.

All scoped verification commands for the owning Rust workspace now pass, including the previously failing formatting check.

## Artifacts Read

- `openspec/changes/2026-04-23-track-4-slice-4-coordinator-ux/proposal.md`
- `openspec/changes/2026-04-23-track-4-slice-4-coordinator-ux/design.md`
- `openspec/changes/2026-04-23-track-4-slice-4-coordinator-ux/tasks.md`
- `openspec/changes/2026-04-23-track-4-slice-4-coordinator-ux/specs/multi-agent-orchestration/spec.md`
- `openspec/changes/2026-04-23-track-4-slice-4-coordinator-ux/apply-report.md`
- `openspec/changes/2026-04-23-track-4-slice-4-coordinator-ux/state.yaml`
- `openspec/config.yaml`

## Completeness Check

### Tasks

All tasks are checked complete.

- Total tasks: 12
- Completed: 12
- Incomplete: 0

## Spec Compliance

### Requirement: Parent-Visible Coordinator Lifecycle Summary

**Status:** PASS

Structural evidence:
- `clients/agent-runtime/src/agent/coordinator.rs`
  - `OrchestrationSnapshot.summary_state`
  - `derive_coordinator_summary_state(...)`
- `clients/agent-runtime/src/tools/delegate_inspect.rs`
  - inspection output reads and surfaces `summary_state`

Behavioral evidence from the re-run coordinator/delegate-inspect suites includes:
- `coordinator_summary_is_running_when_work_can_still_progress_without_parent_action`
- `coordinator_summary_is_blocked_for_any_surfaced_parent_action_condition`
- `coordinator_summary_is_blocked_for_approval_needed_children`
- `coordinator_summary_maps_terminal_and_cancelling_states_directly`
- `inspect_output_mentions_summary_state`
- `inspect_output_reports_blocked_when_parent_action_blocks_progress`
- `inspect_output_reports_non_blocked_summary_states_without_blocked_suffix`

Scenario coverage:
- blocked aggregate state without reconstructing raw child transitions: PASS
- running while progress is still possible: PASS
- explicit states for running / blocked / cancelling / succeeded / failed / cancelled: PASS
- summary derived from coordinator-owned authority rather than mailbox-only reconstruction: PASS

### Requirement: Explicit Blocked Child Visibility and Parent-Readable Next Actions

**Status:** PASS

Structural evidence:
- `clients/agent-runtime/src/agent/coordinator.rs`
  - `ChildLifecycleView.blocking_details`
  - blocked child message / reason-code read-model fields
- `clients/agent-runtime/src/tools/delegate_inspect.rs`
  - blocked-child count and next-action oriented human-readable output

Behavioral evidence:
- `waiting_on_parent_with_non_approval_blocking_details_is_reported_as_blocked_child`
- `repeated_snapshot_preserves_blocked_child_identity_and_running_sibling_visibility`
- `duplicate_approval_redelivery_does_not_duplicate_blocked_child_visibility`
- `mailbox_snapshot_surfaces_blocked_summary_and_parent_action_details`
- `inspect_reports_parent_action_blocking_details`
- `inspect_output_keeps_next_action_hints_descriptive_not_imperative`

Scenario coverage:
- approval-needed children surfaced explicitly: PASS
- unsupported-escalation blocked children surfaced explicitly: PASS
- unaffected sibling visibility preserved: PASS
- next-action hints descriptive and parent-owned, not imperative/authorizing: PASS

### Requirement: Deterministic Inspection Narrative

**Status:** PASS

Behavioral evidence:
- `repeated_snapshot_preserves_blocked_child_identity_and_running_sibling_visibility`
- `repeated_blocked_inspection_is_deterministic_for_same_logical_state`
- `duplicate_mailbox_delivery_does_not_change_aggregate_ordering`
- `duplicate_redelivery_does_not_duplicate_visible_events`
- `mailbox_snapshot_surfaces_blocked_summary_and_parent_action_details`

Scenario coverage:
- repeated inspect calls preserve stable blocked/run narrative: PASS
- duplicate delivery / replay does not duplicate visible blocked semantics: PASS
- mailbox-backed orchestration remains deterministic from parent-visible inspection surface: PASS

## Design Conformance

**Status:** PASS

The implementation follows the major design decisions:

1. **Derive summary state from coordinator-owned authority** — followed
2. **Keep `delegate_inspect` thin and presenter-oriented** — followed
3. **Surface blocked/approval-needed child state explicitly** — followed
4. **Keep next-action hints descriptive, not authorizing** — followed
5. **Preserve deterministic narrative across repeated inspection and mailbox-backed delivery** — followed
6. **Do not widen into remote bridge or delegated child authority** — followed

## Validation Commands Run

### 1. Formatting

Command:

```bash
cargo fmt --all -- --check
```

Result: **PASS**

### 2. Clippy

Command:

```bash
cargo clippy --all-targets -- -D warnings
```

Result: **PASS**

### 3. Targeted coordinator tests

Command:

```bash
cargo test --manifest-path clients/agent-runtime/Cargo.toml coordinator -- --nocapture
```

Result: **PASS**

Observed suite output included 47 passing coordinator-focused tests with 0 failures.

### 4. Targeted delegate inspect tests

Command:

```bash
cargo test --manifest-path clients/agent-runtime/Cargo.toml delegate_inspect -- --nocapture
```

Result: **PASS**

Observed suite output included 14 passing delegate-inspect tests with 0 failures.

## Coverage Assessment

**Status:** ADEQUATE FOR SLICE**

The scoped verification covers the behavior introduced by this slice:
- coordinator summary-state mapping;
- blocked/approval-needed visibility;
- descriptive next-action hints;
- deterministic repeated inspection and mailbox-backed narrative stability;
- delegate-inspect presentation behavior.

Verification was scoped to the owning workspace per `openspec/config.yaml`.

## Regressions / Critical Issues

No regressions or critical issues were found in the scoped owning workspace during this re-run.

The previously observed formatting regression is no longer present.

## Verdict

**PASS**

Reason:
- slice implementation matches the spec;
- design decisions were followed;
- tasks are complete;
- targeted tests pass with adequate coverage for the slice;
- scoped workspace verification commands now pass cleanly.

## Next Recommended

- This change is ready to be treated as verified.
- If desired by the orchestrator, proceed to the archive/close-out path once any broader process requirements are satisfied.
