# 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- Superseded by `docs/sprint225_227_execution_tracker_2026-02-26.md`, which adds deterministic path-B repair capability and revalidates both catalogs with: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`