# Sprint 263 Execution Tracker - 2026-02-26

## Scope
- `sprint263_plan.md`

## Implemented

New tool:
- `tools/mcp/project_raw_candidate_structure.py`
  - Normalizes raw tasks against top-gap missing-signal classes.
  - Fills missing ops/reasons/execution contract fields.
  - Expands shallow task sets to gap-indicated minimum count.

Pipeline integration in `tools/mcp/run_sprint_taskitem_pipeline.sh`:
- Added:
  - `WSTONE_NATIVE_RAW_STRUCTURAL_PROJECTOR`
- Raw candidate search now optionally projects:
  - baseline candidate (`02ae_candidate_0_projected_tasks.json`)
  - each generated candidate variant (`02ae_candidate_<n>_projected_tasks.json`)
  - adaptive retry candidate when enabled
- Added summary packet:
  - `native_raw_structural_projector`

## Validation Artifacts

OFF:
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_165737/00_summary.json`

ON:
- `logs/taskitem_runs/01a_fallback_intake_spec_20260226_165746/00_summary.json`
- projected artifacts:
  - `logs/taskitem_runs/01a_fallback_intake_spec_20260226_165746/02ae_candidate_0_projected_report.json`
  - `logs/taskitem_runs/01a_fallback_intake_spec_20260226_165746/02ae_candidate_0_projected_tasks.json`

Observed result on hard sample:
- Raw search score improved sharply under projector:
  - `best_failing_profile_count: 1 -> 0`
  - `best_top_gap_score: 0 -> 88`
  - `best_task_count: 2 -> 6`
- Residual parity gap:
  - `native_impact_coverage.failing_profile_count` remained `1`
  - indicates score-tool vs coverage-gate semantics are not yet aligned.

## Explicit Completion Signal

- Sprint 263: `DONE` (implemented + validated; uncovered scorer/gate parity gap)