{
  "$comment": "pi versions pi-system-pin has been verified against. A version on the same major.minor line as a listed one runs silently; any other warns once per session and runs. npm test fails on a vendored pi outside every listed line. To add one, follow CONTRIBUTING.md (Verifying a new pi version).",
  "verified": [
    {
      "pi": "1.0.0",
      "date": "2026-10-07",
      "how": [
        "npm test on pi 1.0.0 (with pi-ai and pi-agent-core 1.0.0) in a copy of this tree, the version-gate test skipped: typecheck, unit suite, the real-pi session tests including both control tests (pi 1.0.0 has the flaw) and pi's own compaction, the load smoke",
        "npm run smoke: the pi 1.0.0 binary over RPC, fresh agent dir and HOME, fake model, with folded and with mid-conversation system messages; without system-pin the custom run's second turn lost the fixture's section; with system-pin packed by npm pack and installed by pi install, every leading system message stayed byte-identical, no request carried a system message dropping the section, and a system-pin.patch entry was written"
      ]
    },
    {
      "pi": "1.0.4",
      "date": "2026-10-07",
      "how": [
        "npm test on the vendored pi 1.0.4: typecheck, unit suite, the real-pi session tests, including pi's own compaction with the pinned patch kept and summarized (both control tests pass: without system-pin, pi still drops an added section and reverts a rewritten one; with it, every head is byte-identical), the load smoke",
        "npm run smoke: the pi 1.0.4 binary over RPC, fresh agent dir and HOME, fake model, with folded and with mid-conversation system messages; without system-pin the custom run's second turn lost the fixture's section; with system-pin packed by npm pack and installed by pi install, every leading system message stayed byte-identical, no request carried a system message dropping the section, and a system-pin.patch entry was written"
      ]
    },
    {
      "pi": "1.1.0",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi (the version gate skipped): typecheck, unit suite, the real-pi session tests including both control tests, the load smoke",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "0.87.1",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi: typecheck, unit suite, the real-pi session tests including both control tests (this pi has the flaw), the load smoke; only the version gate failed, its release line not yet listed",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "0.99.0",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi: typecheck, unit suite, the real-pi session tests including both control tests (this pi has the flaw), the load smoke; only the version gate failed, its release line not yet listed",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "0.99.1",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi: typecheck, unit suite, the real-pi session tests including both control tests (this pi has the flaw), the load smoke; only the version gate failed, its release line not yet listed",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "0.99.2",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi: typecheck, unit suite, the real-pi session tests including both control tests (this pi has the flaw), the load smoke; only the version gate failed, its release line not yet listed",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "1.0.1",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi (the version gate skipped): typecheck, unit suite, the real-pi session tests including both control tests, the load smoke",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "1.0.2",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi (the version gate skipped): typecheck, unit suite, the real-pi session tests including both control tests, the load smoke",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    },
    {
      "pi": "1.0.3",
      "date": "2026-10-10",
      "how": [
        "npm test on the vendored pi (the version gate skipped): typecheck, unit suite, the real-pi session tests including both control tests, the load smoke",
        "npm run smoke: the pi binary over RPC in a fresh agent dir against a fake model; the control run lost the section and the pinned run kept every head byte-identical"
      ]
    }
  ]
}