# Sprint 254 Plan: Raw Gap Backlog Synthesis from Closure Ladder Runs

## Goal
Create a prioritized raw-generator gap backlog directly from closure ladder attempts, so next intrinsic work targets the highest-frequency missing signals.

## Steps
- Step 2315: Add backlog synthesizer over ladder run outputs.
- Step 2316: Mine `raw_only` attempt artifacts (not just selected passing runs).
- Step 2317: Integrate backlog generation into ladder batch runner.
- Step 2318: Emit JSON + Markdown backlog artifacts.
- Step 2319: Add `Sprint254IntegrationSummary.h` and execution tracker.