Sprint 259 Plan: Adaptive Raw Top-Gap Retry Loop

Goal

Automatically run a second intrinsic raw-generation attempt with expanded top-gap requirements when weighted raw search shows no uplift.

Step 2342: Add adaptive retry controls and retry signal budget.
Step 2343: Trigger retry when weighted top-gap score does not improve baseline.
Step 2344: Score retry result and apply if it improves fail count/top-gap score/task depth.
Step 2345: Emit retry telemetry and artifacts in summary.
Step 2346: Add Sprint259IntegrationSummary.h and execution tracker.