# Sprint 250 Execution Tracker - 2026-02-26

## Scope
- `sprint250_plan.md`

## Implemented

New runner:
- `tools/mcp/run_native_profile_closure_ladder.sh`
  - mode order:
    1. `raw_only`
    2. `single_shot_shape`
    3. `multishot`
    4. `autofill`
  - runs each mode with enforced impact coverage gate.
  - stops at first pass and records selected mode.
  - writes deterministic summary:
    - `closure_ladder_summary.json`

## Validation Artifact

- `logs/taskitem_runs/TEST_ONLY_sprint250_closure_ladder_20260226/closure_ladder_summary.json`

Observed result on hard fullstack sample:
- selected mode: `single_shot_shape`
- selected run impact coverage:
  - `status=ok`
  - `failing_profile_count=0`

## Explicit Completion Signal

- Sprint 250: `DONE` (implemented + ladder selection verified)