{
  "schema_version": 2,
  "axis": "IMP-89 89-a u4 — final.html SHA baseline captured via FULL run_phase_z2_mvp1 pipeline (flag OFF / default)",
  "description": "Frozen SHA-256 of `final.html` bytes (the artifact written to disk at src/phase_z2_pipeline.py:5994-5996) captured by running the full Phase Z pipeline end-to-end for each mdx 01-05 under PHASE_Z_B4_MAPPER_SOURCE=OFF. Under flag OFF the 89-a selector `_select_mapper_template_id(plan, T)` returns `T` verbatim, so the mapper input is byte-identical to the pre-89-a legacy call shape `map_mdx_to_slots(section, unit.frame_template_id)` — the rendered HTML and therefore the final.html SHA match the pre-89-a baseline. The u4 regression test runs the same pipeline shape under flag OFF and asserts SHA equality. Regenerate only when an upstream mapper/render/template delta is deliberately reviewed and accepted.",
  "captured_at_utc": "2026-05-27T04:19:30Z",
  "renderer": {
    "entrypoint": "src.phase_z2_pipeline.run_phase_z2_mvp1",
    "write_site": "src/phase_z2_pipeline.py:5994-5996",
    "artifact_relpath": "<RUNS_DIR>/<run_id>/phase_z2/final.html"
  },
  "mdx_batch": [
    "01.mdx",
    "02.mdx",
    "03.mdx",
    "04.mdx",
    "05.mdx"
  ],
  "mdx_files": {
    "01.mdx": {
      "mdx_file": "01.mdx",
      "run_id": "89a_baseline_01",
      "final_html_size_bytes": 29959,
      "sha256": "62d793166ca4cdd8d8d1d134d8659b43dce95bb958e7efd6ce0e72619b3c335d",
      "pipeline_exit_code": null
    },
    "02.mdx": {
      "mdx_file": "02.mdx",
      "run_id": "89a_baseline_02",
      "final_html_size_bytes": 25789,
      "sha256": "333defb22f5da940b0bb3b3563730d12bd901d7b5d870a2aaef3f0c929d2dad1",
      "pipeline_exit_code": null
    },
    "03.mdx": {
      "mdx_file": "03.mdx",
      "run_id": "89a_baseline_03",
      "final_html_size_bytes": 40550,
      "sha256": "d84e32b402cfbdcab6025b584b5e2657766f11b3fc110c217be0551e39f3f516",
      "pipeline_exit_code": null
    },
    "04.mdx": {
      "mdx_file": "04.mdx",
      "run_id": "89a_baseline_04",
      "final_html_size_bytes": 28725,
      "sha256": "da3668d76fc582a1a26ad930b54a8abb7079969ebf91e79cfe7dd273ec4a0e95",
      "pipeline_exit_code": null
    },
    "05.mdx": {
      "mdx_file": "05.mdx",
      "run_id": "89a_baseline_05",
      "final_html_size_bytes": 21739,
      "sha256": "5baa8478a1316403dd3e7b7bccaaaee20fe6ac7738ea7ddd2af2f19b4b294f2c",
      "pipeline_exit_code": 1
    }
  },
  "total_files": 5
}