# Sprint 258 Execution Tracker - 2026-02-26

## Scope
- `sprint258_plan.md`

## Implemented

New tool:
- `tools/mcp/synthesize_raw_top_gap_requirements.py`
  - Reads `raw_gap_backlog.json`.
  - Selects top `N` missing signals.
  - Emits normalized requirement objects suitable for `normalizedRequirements`.

Pipeline integration in `tools/mcp/run_sprint_taskitem_pipeline.sh`:
- Added:
  - `WSTONE_NATIVE_RAW_TOP_GAP_REQUIREMENTS`
  - `WSTONE_NATIVE_RAW_TOP_GAP_MAX_SIGNALS`
- Added artifacts:
  - `01e_raw_top_gap_requirements.json`
  - `01e_raw_top_gap_requirements_report.json`
- Added summary packet:
  - `native_raw_top_gap_requirements`

## Validation Artifacts

OFF:
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_162853/00_summary.json`

ON:
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_162924/00_summary.json`
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_162924/01e_raw_top_gap_requirements_report.json`

Observed result on hard sample:
- Injection enabled with `selected_signal_count=5` from `input_signal_count=20`.
- `selected_variant` remained `0`.
- `best_top_gap_score` remained `0`.
- `failing_profile_count` remained `1`.

## Explicit Completion Signal

- Sprint 258: `DONE` (implemented + validated; intrinsic uplift still pending)