whetstone_DSL/docs/sprint256_execution_tracker_2026-02-26.md

Sprint 256 Execution Tracker - 2026-02-26

Scope

• sprint256_plan.md

Implemented

Scorer enhancement:

• tools/mcp/score_native_tasks_profile_coverage.py
  • Added optional --top-gaps <raw_gap_backlog.json>.
  • Computes:
    • top_gap_signal_count
    • top_gap_signal_hits
    • top_gap_signal_weight_total
    • top_gap_score

Pipeline integration in tools/mcp/run_sprint_taskitem_pipeline.sh:

• Added:
  • WSTONE_NATIVE_RAW_TOP_GAP_WEIGHTED_SELECT
  • WSTONE_NATIVE_RAW_TOP_GAP_BACKLOG_FILE
• Raw search summary now emits:
  • baseline_top_gap_score
  • best_top_gap_score
  • top_gap_weighted_select
  • top_gap_backlog_file
• Candidate selection policy:
  • first minimize failing_profile_count
  • if tied and weighted mode enabled, maximize top_gap_score
  • then maximize task_count

Validation Artifacts

Raw search A/B (weighted selector off/on):

• OFF:
  • logs/taskitem_runs/01a_fallback_intake_spec_20260226_162422/00_summary.json
• ON:
  • logs/taskitem_runs/01a_fallback_intake_spec_20260226_162423/00_summary.json

Observed result on hard sample:

• selected_variant unchanged (0)
• best_failing_profile_count unchanged (1)
• best_top_gap_score remained 0 for this sample

Scorer sanity check on hardened tasks:

• python3 tools/mcp/score_native_tasks_profile_coverage.py ... --top-gaps ...
• output: /tmp/sprint256_score_check.json
• observed:
  • top_gap_signal_hits=18/20
  • top_gap_score=86

Explicit Completion Signal

• Sprint 256: DONE (implemented + measured; no intrinsic uplift yet on this hard sample)