---
docType: review
layer: project
reviewType: tasks
slice: pipeline-core-models-and-action-protocol
project: squadron
verdict: PASS
sourceDocument: project-documents/user/tasks/142-tasks.pipeline-core-models-and-action-protocol.md
aiModel: claude-haiku-4-5-20251001
status: complete
dateCreated: 20260330
dateUpdated: 20260330
---

# Review: tasks — slice 142

**Verdict:** PASS
**Model:** claude-haiku-4-5-20251001

## Findings

### [PASS] All nine success criteria are mapped to implementation tasks

Each success criterion from the slice design is traced to one or more tasks:

1. **SC: Package structure exists** → T1 (create directory tree, stub modules)
2. **SC: Top-level imports work** → T2, T12 (models + wire public surface)
3. **SC: Action protocol round-trip with isinstance** → T4, T5, T6 (protocol + registry + tests)
4. **SC: StepType protocol round-trip with isinstance** → T7, T8, T9 (protocol + registry + tests)
5. **SC: ModelResolver cascade priority** → T10, T11 (resolver implementation + cascade tests)
6. **SC: ModelResolver raises ModelPoolNotImplemented on pool: prefix** → T10, T11 (cascade check + tests)
7. **SC: ModelResolver raises ModelResolutionError on all None** → T10, T11 (error handling + tests)
8. **SC: pyright clean (zero errors)** → T2, T4, T7, T10, T12, T13 (scattered type checks + consolidated T13)
9. **SC: pytest passes (all tests)** → T3, T6, T9, T11, T13 (unit tests + consolidated T13)

---

### [PASS] Task sequencing respects all dependencies

- T1 (package skeleton) executes first, enabling all downstream work
- Data models (T2) precedes protocol definitions (T4, T7) that import from models
- Protocol/enum definitions (T4, T7) precede registry implementations (T5, T8)
- Resolver (T10) can execute in parallel with action/step systems (depends only on T1)
- Public surface wiring (T12) depends on all implementation tasks being complete (T2, T5, T7, T10)
- Final test/verification (T13, T14) depends on all implementation and testing complete
- No circular dependencies detected

---

### [PASS] Test-with pattern is consistently applied

- T2 (models) → T3 (test models) ✓
- T5 (action registry) → T6 (test action registry) ✓
- T8 (step-type registry) → T9 (test step-type registry) ✓
- T10 (ModelResolver) → T11 (test resolver) ✓
- T12 (wire surface) → T13 (full test suite)

Protocols and enums (T4, T7) are tested indirectly in their corresponding registry test tasks (T6, T9) via isinstance checks, which is acceptable since they are simple, tightly coupled with their registries.

---

### [PASS] Commit checkpoints are well-distributed

Six commits are planned throughout the slice (not batched at end):

1. After T3: `feat: add pipeline package skeleton and core data models` (core)
2. After T6: `feat: add Action protocol, ActionType enum, and action registry` (action system)
3. After T9: `feat: add StepType protocol, StepTypeName enum, and step-type registry` (step system)
4. After T11: `feat: add ModelResolver with 5-level cascade and pool: stub` (resolver)
5. After T13: `feat: wire pipeline __init__ public surface and verify pyright` (public API)
6. After T14: `docs: mark slice 142 complete, update changelog and devlog` (documentation)

Each commit is preceded by `uv run ruff format` in accordance with memory instructions.

---

### [PASS] Task sizes and scoping are appropriate for junior AI completability

- **Small, focused tasks:** T1 (mkdir/touch), T12 (re-exports), T14 (doc updates)
- **Moderate, implementation tasks:** T2 (5 dataclasses), T4 (1 protocol + 1 enum), T10 (1 class)
- **Test-heavy tasks:** T3, T6, T9, T11 (3–10 test functions each) with explicit assertions
- **Validation tasks:** T13 (pytest + pyright), T14 (verification walkthrough)

None are oversized (requiring complex refactoring) or undersized (trivial). Each includes concrete checklist items that a junior AI can execute systematically.

---

### [PASS] No scope creep detected; no untraced tasks

All 14 tasks trace back to success criteria, slice design sections, or necessary coordination activities (branch creation, formatting, documentation). No tasks address out-of-scope items (YAML loading 148, executor 149, state persistence 150, CLI integration 151).

---

### [PASS] Forward reference and circular import hazards are acknowledged

- T2 explicitly notes forward-referencing `ModelResolver` in `ActionContext` as a string annotation to avoid circular import
- T2 types `cf_client: object` to avoid importing `ContextForgeClient` in models layer
- T12 re-exports avoid re-importing issues by using standard Python re-export pattern

No structural circular dependency risks introduced.

---

### [PASS] Test isolation strategy is in place

- T6 and T9 explicitly mention monkeypatching `_REGISTRY` to `{}` for empty-list test cases
- All test functions are named distinctly, allowing pytest to discover and run independently
- Registries are module-level singletons (acknowledged in slice design Notes), suitable for test isolation via monkeypatch

---

### [PASS] Verification strategy is explicit and testable

T14 includes:
- Running each smoke test from slice design Verification Walkthrough (lines 473–532)
- Confirming package structure with `find`
- Testing imports, resolver cascade, pool: blocking, error raising
- Running full pytest suite with no regressions
- Running pyright with 0 errors

These form a comprehensive sign-off before marking slice complete.
