# Sprint 260 Plan: Signal-Targeted Intrinsic Variant Expansion

## Goal
Add missing-signal-class-targeted raw requirement variants so intrinsic candidate search explores direct interventions keyed to backlog failure classes.

## Steps
- Step 2347: Add tool to synthesize raw variants from top missing-signal backlog classes.
- Step 2348: Merge signal-targeted variants with profile-based variants in raw search.
- Step 2349: Add pipeline controls for enabling and sizing signal-targeted variant expansion.
- Step 2350: Emit signal-targeted variant telemetry in summary packet.
- Step 2351: Validate OFF/ON behavior on hard sample.
- Step 2352: Add `Sprint260IntegrationSummary.h` and execution tracker.