whetstone_DSL/docs/sprint222_224_execution_tracker_2026-02-26.md

Sprint 222-224 Execution Tracker - 2026-02-26

Scope

Executed sprint plans:

• sprint222_plan.md
• sprint223_plan.md
• sprint224_plan.md

Implemented Changes

Sprint 222 (AB/prod parity hard gate)

• tools/mcp/run_project_benchmark_matrix.sh
  • added REQUIRE_AB_PARITY (default 1).
  • when AB Path B has compile/test failure but production reports compile+tests pass:
    • block production readiness (overall_ready=false),
    • set deterministic reason ab_parity_blocked:path_b_compile_or_test_failed,
    • emit ab_consistency_blocked=true.

Sprint 223 (Parity reporting closure)

• tools/mcp/summarize_project_benchmark_matrix.py
  • added production_loop.ab_consistency_blocked_count.
  • unresolved divergence remains tracked as ab_prod_divergence_count.

Sprint 224 (Cross-catalog validation)

• validated parity behavior on focused hard subset catalog with production enabled.

Validation Evidence

Fullstack/multifile hard suite

• logs/taskitem_runs/challenging_fullstack_multifile_20260226_r6/summary.json
• key metrics:
  • ab_prod_divergence_count=0
  • ab_consistency_blocked_count=6
  • prod_ready=6/12

Focused challenging production subset

• logs/taskitem_runs/challenging_subset_prod_20260226_r5/summary.json
• key metrics:
  • ab_prod_divergence_count=0
  • ab_consistency_blocked_count=6
  • prod_ready=4/16

Explicit Completion Signal

• Sprint 222: DONE (implemented + validated)
• Sprint 223: DONE (implemented + validated)
• Sprint 224: DONE (implemented + validated)

Residual Risk Signal

• Divergence is now controlled by hard blocking, not solved by capability parity.
• Language-first path remains weak outside Python, especially C++ (and go/rust on focused subset).

Superseding Follow-up

• Superseded by docs/sprint225_227_execution_tracker_2026-02-26.md, which adds deterministic path-B repair capability and revalidates both catalogs with:
  • ab_prod_divergence_count=0
  • ab_consistency_blocked_count=0