# Sprint 251 Execution Tracker - 2026-02-26

## Scope
- `sprint251_plan.md`

## Implemented

New tool:
- `tools/mcp/synthesize_raw_candidate_requirement_variants.py`
  - Builds profile-aware raw requirement bundles for candidate search.

Pipeline integration in `tools/mcp/run_sprint_taskitem_pipeline.sh`:
- Raw candidate search now consumes synthesized variant bundles.
- Added telemetry field:
  - `native_raw_candidate_search.available_variants`

## Validation Artifact

- `logs/taskitem_runs/TEST_ONLY_sprint251_rawvariants_20260226_154355/00_summary.json`

Observed result on hard fullstack sample:
- `available_variants=8`
- `attempted_variants=8`
- selected variant remains baseline (`selected_variant=0`)
- `failing_profile_count` unchanged at `7`

## Explicit Completion Signal

- Sprint 251: `DONE` (implemented + measured; no raw-only uplift)