{
  "task": "PKG-MB-01",
  "status": "done",
  "scope": "Historical source/package/interface and dependency provenance, not real media or release acceptance",
  "checks": [
    {
      "command": "node --test refactor/scripts/mb-contract.test.mjs",
      "result": "pass",
      "tests": 19,
      "historicalArchiveMembers": 12,
      "frozenGitInputs": 17,
      "declaredOptionPaths": 25,
      "scope": "Historical package/interface, actual exports, type consumers and controlled media-method forwarding; not native media playback"
    },
    {
      "command": "focused eslint --no-fix",
      "result": "pass",
      "files": [
        "refactor/scripts/mb-contract.mjs",
        "refactor/scripts/mb-contract.test.mjs",
        "refactor/scripts/contracts.test.mjs",
        "test/helpers/mediabunny.js"
      ]
    },
    {
      "command": "yarn ci:check",
      "result": "pass",
      "tests": {
        "unit": 1006,
        "engineering": 14,
        "baseline": 141,
        "mainTotal": 1161,
        "repeatedContractExecutions": 44
      },
      "strictProductionTypeScriptFiles": 290,
      "log": "refactor/.cache/mb01-ci-verified.log"
    },
    {
      "command": "production/demo/artifact hashes compared with frozen source",
      "result": "unchanged",
      "files": 17
    }
  ],
  "limitations": [
    "Native MP4/WebM/HLS/Blob/Stream and AV synchronization remain MB-02/09.",
    "Historical bundled SDK exact version unknown; current installed SDK is recorded separately.",
    "License/source-notice packaging remains MB-10; no legal compliance claim.",
    "Canvas/Ambilight factory decision remains pending and is not decided by this task."
  ],
  "parentCommit": "1f93bb9ba1f7329a348c1b0538473615e5278d7c",
  "failedAttempts": [
    {
      "log": "refactor/.cache/mb01-tests-first.log",
      "resolution": "Exact historical readonly-write behavior and TypeScript-version diagnostic codes retained; VM exception checked by name."
    },
    {
      "log": "refactor/.cache/mb01-ci.log",
      "resolution": "Generated contract-index.md was stale after adding two published versions; regenerated using contracts.mjs --write before the passing full CI."
    },
    {
      "log": "refactor/.cache/mb01-ci-final.log",
      "resolution": "Contract model assertion still expected fifteen published versions; updated to seventeen and explicitly asserted the two MediaBunny release identities before the final passing CI."
    }
  ]
}