# Sprint 264 Execution Tracker - 2026-02-26

## Scope
- `sprint264_plan.md`

## Implemented

Pipeline parity fix in `tools/mcp/run_sprint_taskitem_pipeline.sh`:
- After raw candidate selection, pipeline now persists selected `TASKS` into:
  - `02_generate_taskitems.json`
- This ensures downstream `check_native_decomposition_impact_coverage.py` and summary gates evaluate the same selected task set as raw scoring.

## Validation Artifacts

Before parity fix (mismatch reference):
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_165746/00_summary.json`
  - raw score pass, coverage gate fail

After parity fix:
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_170014/00_summary.json`
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_170014/06_native_impact_coverage.json`
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_170014/02ae_candidate_0_score.json`

Observed result on hard sample (projector ON):
- `native_raw_candidate_search.best_failing_profile_count=0`
- `native_impact_coverage.failing_profile_count=0`
- `taskitems.task_count=6`, `effective_task_count=6`
- scorer and gate now consistent.

## Explicit Completion Signal

- Sprint 264: `DONE` (implemented + validated parity closure on hard sample)