# Pre-Implementation Review

**Feature**: AgentCore Code Interpreter Sandbox
**Artifacts reviewed**: spec.md, plan.md, tasks.md, research.md, checklists/sdk-integration.md
**Review model**: Claude Opus 4.6 (cross-model reviewer)
**Generating model**: Claude Opus 4.6 (Phases 1-6)
**Date**: 2026-03-22

## Summary

| Dimension | Verdict | Issues |
|-----------|---------|--------|
| Spec-Plan Alignment | PASS | All 6 user stories and 18 FRs covered in plan |
| Plan-Tasks Completeness | PASS | Every architectural component has corresponding tasks |
| Dependency Ordering | PASS | Phases correctly ordered; foundational before stories |
| Parallelization Correctness | PASS | Fixed: T003 no longer marked [P] (depends on T004) |
| Feasibility & Risk | PASS | Fixed: logging added to retry, edge case tests added |
| Standards Compliance | PASS | Constitution is template-only; project conventions followed |
| Implementation Readiness | PASS | Tasks are specific with file paths, test names, and implementation details |

**Overall**: **READY**

## Findings

### Critical (FAIL -- must fix before implementing)

None.

### Warnings (resolved)

1. **W1 (RESOLVED)**: T003 conftest [P] marker removed — now sequential since it depends on T004's class.
2. **W2 (RESOLVED)**: T006 updated to log original exception before retry attempt.
3. **W3 (N/A)**: T004 density acceptable for a skeleton task.
4. **W4 (RESOLVED)**: Added `test_extract_python_single_quotes`, `test_extract_python_no_argument`, `test_extract_python_nested_quotes` to T005.

### Observations (informational)

1. Constitution is placeholder — no compliance checks possible.
2. upload_files sends one file at a time (could batch for efficiency — not a correctness issue).
3. Good traceability with [US1][US2], [US3], [US4][US5], [US6] labels.
4. Checklist quality is high — identifies genuine gaps addressed at implementation level.
5. Reference implementation well-leveraged.

## Recommended Actions

All recommended actions have been applied to tasks.md. No outstanding items.
