# TASK-157 gate checkpoint summaries

Date: 2026-05-01

## Summary

- Added strict top-level gate summary fields to staged reference compare and
  iterate response contracts.
- Projected `active_gate_plan` into `gate_statuses`, `completion_blockers`,
  `next_gate_actions`, and `recommended_bounded_tools` without introducing a
  new runtime flow or catalog authority.
- Preserved iterate fallback behavior by carrying gate summaries from the
  compact compare result when the caller does not pass a separate active gate
  plan.
- Closed TASK-157-03 as the guided runtime integration slice; TASK-157-04
  remains open for cross-domain Blender-backed E2E proof.
- Updated MCP, prompt, router-boundary, tool-summary, test, task, and board
  docs for the checkpoint gate-summary contract.

## Validation

- `git diff --check`
- `PYTHONPATH=. poetry run pytest tests/unit/adapters/mcp/test_reference_images.py::test_stage_checkpoint_responses_project_gate_plan_summary_fields tests/unit/adapters/mcp/test_reference_images.py::test_iterate_stage_response_carries_silhouette_analysis_and_action_hints -v`
- `PYTHONPATH=. poetry run pytest tests/unit/adapters/mcp/test_reference_images.py tests/unit/adapters/mcp/test_contract_payload_parity.py tests/unit/adapters/mcp/test_quality_gate_contracts.py tests/unit/adapters/mcp/test_quality_gate_verifier.py tests/unit/adapters/mcp/test_quality_gate_intake.py -v`
- `PRE_COMMIT_HOME=/tmp/pre-commit-cache poetry run pre-commit run --files README.md _docs/AVAILABLE_TOOLS_SUMMARY.md _docs/_CHANGELOG/README.md _docs/_CHANGELOG/282-2026-05-01-task-157-gate-checkpoint-summaries.md _docs/_MCP_SERVER/README.md _docs/_PROMPTS/README.md _docs/_PROMPTS/REFERENCE_GUIDED_CREATURE_BUILD.md _docs/_ROUTER/RESPONSIBILITY_BOUNDARIES.md _docs/_TASKS/README.md _docs/_TASKS/TASK-157-03_Guided_Flow_Gate_Runtime_Integration.md _docs/_TASKS/TASK-157_Goal_Derived_Quality_Gates_And_Deterministic_Verification.md _docs/_TESTS/README.md server/adapters/mcp/areas/reference.py server/adapters/mcp/contracts/reference.py tests/unit/adapters/mcp/test_reference_images.py`
