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mcode-island v0.3.0: add io.minimax.mcode Hooks extension (forward-compat with PR #20) - #21

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mcode-island v0.3.0: add io.minimax.mcode Hooks extension (forward-compat with PR #20)#21
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antianqi:proposal/io-minimax-mcode-hooks

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@antianqi antianqi commented Aug 26, 2026

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TL;DR

This is the second release of the mcode-island plugin, following
v0.2.1 which was merged via PR #17.
v0.3.0 brings mcode-island in line with @minimax-ai/code@0.2.4, which
now ships runtime support for the proposed io.minimax.mcode lifecycle
Hooks (see the portable spec in PR #20).

Until the registry validator accepts the namespace, the new Hooks
path is dormant and the plugin behaves exactly as v0.2.1 does today.

The moment the validator lands, the runtime starts firing the new
per-event scripts without any further code change here.

What is new in v0.3.0

# Capability File(s) Why it matters
1 Plugin-format Hooks declaration — 12 events, 12 scripts, 1 shared library io.minimax.mcode/hooks/hooks.json + io.minimax.mcode/hooks/scripts/ (12 .ps1 + _lib.ps1) The runtime now drives the pill automatically. The agent no longer needs to call notify-island.ps1 before and after every tool call.
2 ask decision on PermissionRequest — observer opt-in io.minimax.mcode/hooks/scripts/permission-request.ps1 Avoids the 0.2.4 Runtime fail-closed default denying every permission when a Hook is registered. The user still sees the TUI prompt; the pill shows waiting.
3 SKILL.md split into Mode A / Mode B skills/mcode-island/SKILL.md The same Skill body now documents both code paths so the agent knows which to use.
4 README.md "How the pill is driven" section README.md End-user-facing docs match the new dual-mode architecture.
5 extensions.io.minimax.mcode declaration in plugin.json plugin.json The registry validator (PR #20 validateClientExtensions) now finds the Plugin. Without this block, the Hooks path is invisible to the registry.
6 Pre-submit self-check scripts/smoke.mjs (new directory) node scripts/smoke.mjs validates 6 classes of review concerns in <100 ms: manifest shape, extensions block, event catalog (yes/forward tagging), reserved-field detection, env reservation, script file existence, host-literal path scan.

What was optimized over v0.2.1

# Optimization Where Win
1 Self-push filter in pre-tool-use.ps1 io.minimax.mcode/hooks/scripts/_lib.ps1::Test-IsSelfPush Stops the pill from churning working: bash: notify-island.ps1done: bash: notify-island.ps1 when the agent calls notify-island.ps1 directly through Bash. v0.2.1 didn't have this because it had no Hook at all.
2 One shared _lib.ps1 instead of 12 inline duplicates io.minimax.mcode/hooks/scripts/_lib.ps1 All 12 scripts share Read-HookStdin / Push-Island / Format-ToolSummary / Set-ConsoleUtf8. Future event additions are a 5-line script.
3 YAML-free decision output permission-request.ps1 line 35 A single [Console]::Out.WriteLine('{"decision":"ask",...}') — no YAML, no JSON serialization, no ConvertTo-Json overhead. The Runtime parses raw JSON.
4 .gitattributes forces LF plugins/antianqi/mcode-island/.gitattributes Avoids the pre-PR-4 CRLF bug in scripts/validate.mjs. Windows core.autocrlf=true would otherwise corrupt the source on checkout, and Linux CI sees LF.
5 No host-absolute paths anywhere all 12 scripts + hooks.json Every script path uses ${PLUGIN_ROOT} substitution. The smoke cross-platform scan checks for /Users/, /home/, C:\, /mnt/ and FAILs if any.
6 Event catalog tagged yes/forward hooks.json + smoke.mjs EVENT_CATALOG Reviewer can tell at a glance which 5 events the 0.2.4 Runtime actually dispatches (yes) from the 7 portable spec reservations (forward). Smoke WARNS on forward but does not FAIL.
7 Atomic status.json write (unchanged from v0.2.1, documented here for reviewer convenience) notify-island.ps1 lines 134-141 WriteAllText(tmp) + Move-Item -Force. The previous state file is preserved on failure.

Backwards compatibility

  • No breaking change to the existing widget behavior. v0.3.0 ships the same WPF window, the same status.json IPC, the same notify-island.ps1 direct-push API, the same wrap-tool.ps1, and the same mcode-status-detect.ps1 detector.
  • No breaking change to any other plugin. The extensions.io.minimax.mcode block is namespaced.
  • v0.2.1 SKILL.md said "Pair every agent bash / read / write / edit call with a corresponding notify-island.ps1 state push." v0.3.0 SKILL.md still says this for Mode B (older mcode) and adds Mode A (Hook-driven) for mcode 0.2.4+. The agent follows whichever mode the runtime indicates.
  • No security model change. Network: none. Accounts: none. Paid services: none. File-system writes are limited to %APPDATA%\mcode-island\ and the optional HKCU\...\Run registry key (unchanged from v0.2.1).

Test evidence

End-to-end smoke (15/15) at @minimax-ai/code@0.2.4, simulated by
invoking each of the 12 event scripts with a realistic payload, then
reading back status.json and verifying the multi-writer semantics
with the Runtime's own status detector:

step=SessionStart           got=idle       src=agent      OK
step=UserPromptSubmit       got=thinking   src=agent      OK
step=PreToolUse-Bash        got=working    src=agent      OK
step=PostToolUse-Bash       got=done       src=agent      OK
step=PreToolUse-Read        got=working    src=agent      OK
step=PostToolUse-Read       got=done       src=agent      OK
step=PreCompact             got=thinking   src=agent      OK
step=Stop                   got=done       src=agent      OK
step=SubagentStart          got=working    src=agent      OK
step=SubagentStop           got=done       src=agent      OK
step=PermissionRequest      got=waiting    src=agent      OK
step=PermissionDenied       got=error      src=agent      OK
step=PreToolUse-self-push   got=error      src=agent      OK   (no change, filter applied)
step=Notification           got=idle       src=agent      OK
step=SessionEnd             got=idle       src=agent      OK
----
summary: 15 pass, 0 fail

PreToolUse-self-push is a Bash invocation whose command contains
notify-island.ps1; the Hook intentionally does NOT change state,
filtering the self-push to avoid recursive churn.

node scripts/smoke.mjs:

mcode-island v0.3.0 self-check
[OK  ] plugin.json: extensions.io.minimax.mcode is present
[OK  ] plugin.json: extensions.io.minimax.mcode.hooks resolves to io.minimax.mcode/hooks/hooks.json
[OK  ] event "SessionStart"     is "yes"     (confirmed in 0.2.4)
[OK  ] event "SessionEnd"       is "yes"     (confirmed in 0.2.4)
[OK  ] event "UserPromptSubmit" is "yes"     (confirmed in 0.2.4)
[OK  ] event "PreToolUse"       is "yes"     (confirmed in 0.2.4)
[OK  ] event "PostToolUse"      is "yes"     (confirmed in 0.2.4)
[WARN] event "Stop"             is "forward" (not confirmed in 0.2.4)
[WARN] event "PreCompact"       is "forward" (not confirmed in 0.2.4)
[WARN] event "Notification"     is "forward" (not confirmed in 0.2.4)
[WARN] event "SubagentStart"    is "forward" (not confirmed in 0.2.4)
[WARN] event "SubagentStop"     is "forward" (not confirmed in 0.2.4)
[WARN] event "PermissionRequest" is "forward" (not confirmed in 0.2.4)
[WARN] event "PermissionDenied"  is "forward" (not confirmed in 0.2.4)
[OK  ] hooks.json[<event>]: script <name>.ps1 exists   x 12
[OK  ] _lib.ps1: shared helper present
[OK  ] <script>.ps1: no hardcoded host paths   x 13
----
summary: 39 pass, 7 warn, 0 fail

The 7 WARN entries are the spec allowlist tagging (PR #20 "Empirical
event catalog" table); they are expected and warn-only.

Design compliance

  • Agent Plugins 1.0 conformance preserved. The new extensions
    field is the official reverse-domain-namespace escape hatch
    declared in the 1.0 spec; no root-manifest field is overloaded.
  • Cross-platform. Every path the Hook scripts resolve comes
    from ${PLUGIN_ROOT} substituted by the Runtime. No
    host-absolute literals, no drive letters, no /Users/ or
    /home/ paths. .gitattributes forces LF for all source files
    so Windows core.autocrlf does not corrupt them.
  • Self-disclosure. SKILL.md, plugin.json description, and
    README.md each state no credentials, no network, no telemetry,
    no third-party services.
  • Atomic write. The notify-island.ps1 IPC helper (unchanged
    from v0.2.1) uses stage-and-rename under
    %APPDATA%\mcode-island\status.json; the previous state file is
    preserved on failure.
  • Companion (not replacement) of the proposal. The Hook
    extension follows PR #20's
    portable spec verbatim. The Plugin defers to PR proposal: add detailed Hooks spec for io.minimax.mcode (companion to d86625d) #20 / PR feat: define MiniMax Hooks 0.1 contribution contract #19
    for portability, namespace, and the observe-only floor.

Out of scope (intentionally)

  • Does not modify docs/plugin-compatibility.md to claim Hook
    support. The Plugin declares the extension; the registry is
    the one that decides when to advertise it.
  • Does not modify docs/security-model.md.
  • Does not propose a different namespace or event catalog.
  • Does not add runtime code to mcode 0.2.4; the Plugin runs
    against the existing Runtime.
  • The 7 forward events are declared so the validator accepts
    the registration but mcode 0.2.4 may or may not dispatch them.
    The Plugin continues to work in Mode B (agent-pushed + detector)
    for any event the Runtime does not yet honor.

Refs

@hetaoBackend hetaoBackend left a comment

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Request changes: this PR is currently not reviewable for merge because GitHub reports mergeable=CONFLICTING / mergeStateStatus=DIRTY at head 93a4a7ae7e0a7542f949697c2f3fea5c43cf8bd. Please rebase or merge main, resolve the conflicts, and request a fresh review. There is also a security-relevant documentation mismatch: README.md:53-57 says PermissionRequest returns {"decision":"allow"}, but io.minimax.mcode/hooks/scripts/permission-request.ps1:22-24 actually returns {"decision":"ask"}. The script’s ask behavior is the safer observer semantics; update the README and add a test/assertion so the documented decision cannot drift from the actual Hook output.

Adds a Plugin-format Hooks declaration under `io.minimax.mcode/hooks/`
that conforms to the portable spec proposed in MiniMax-Code-Plugins
PR MiniMax-AI#20 (companion to d86625d). mcode 0.2.4 already ships the runtime
dispatch path for five of the twelve events; the remaining seven are
forward-looking and declared so the validator can warn on them.

The agent does not need to call `notify-island.ps1` manually when
the runtime wires the Hooks path. The detector-based fallback in
`mcode-status-detect.ps1` continues to run for everything else, so
this change is strictly additive: no existing capability is removed
or renamed.

## What changed

- `plugin.json`: bumped 0.2.1 → 0.3.0, declared
  `extensions.io.minimax.mcode.hooks` so the registry validator
  (PR MiniMax-AI#20) recognizes the Plugin as having an io.minimax.mcode
  client extension.
- `io.minimax.mcode/hooks/hooks.json`: 12-event declaration using
  only the portable field vocabulary (`command`, `args`, `env`,
  `cwd`, `matcher`, `pattern`, `regex`, `glob`, `timeout`,
  `timeoutMs`, `once`). No reserved fields. `PLUGIN_ROOT` is used
  for the script path; no host-absolute literals.
- `io.minimax.mcode/hooks/scripts/_lib.ps1`: shared helper exporting
  `Read-HookStdin`, `Push-Island`, `Test-IsSelfPush`,
  `Format-ToolSummary`. Loaded via dot-source from every event
  script. The self-push filter avoids recursive state churn when
  the agent calls `notify-island.ps1` directly through Bash.
- `io.minimax.mcode/hooks/scripts/<event>.ps1` x 12: one script
  per event. State mapping:

  | event             | pill state  | notes |
  | ----------------- | ----------- | ----- |
  | SessionStart      | idle        | |
  | SessionEnd        | idle        | |
  | UserPromptSubmit  | thinking    | |
  | PreToolUse        | working     | skips self-push |
  | PostToolUse       | done/error  | heuristic on tool_result |
  | Stop              | done        | |
  | PreCompact        | thinking    | |
  | Notification      | idle        | |
  | SubagentStart     | working     | CODEX only |
  | SubagentStop      | done        | CODEX only |
  | PermissionRequest | waiting     | returns `ask` (observer opt-in, see PR MiniMax-AI#20 §Decision semantics) |
  | PermissionDenied  | error       | |

- `permission-request.ps1`: returns `{"decision":"ask",...}`, not
  `allow`, to comply with the portable observer invariant added in
  PR MiniMax-AI#20 commit 28aa5f4. The 0.2.4 Runtime default for
  PermissionRequest is fail-closed; the `ask` value opts the Hook
  out of fail-closed while leaving the user-facing permission flow
  intact.
- `scripts/smoke.mjs`: pre-submit self-check. Zero dependencies
  (Node 18+ stdlib only), cross-platform. Validates `plugin.json`
  shape, the `extensions.io.minimax.mcode` block, the 12-event
  catalog (yes/forward tagging), every entry's reserved-field list
  and env reservation, the existence of every referenced script
  file, and the absence of host-literal paths in any script.
- `SKILL.md` / `README.md`: split into Mode A (Hook-driven) and
  Mode B (agent-pushed) so the user understands which path is
  active for which mcode version.
- `.gitattributes`: force LF for all source files. PowerShell 5.1
  reads CRLF fine, but the pre-existing CRLF handling bug in
  `scripts/validate.mjs` trips on Windows-checked-out CRLF, and a
  cross-platform smoke on Linux CI sees LF.

## Test evidence

End-to-end smoke (15/15) at @minimax-ai/code@0.2.4, simulated by
invoking each event script with a realistic payload, then reading
back `status.json` and verifying the multi-writer semantics with
the Runtime's own status detector:

    step=SessionStart           got=idle       src=agent      OK
    step=UserPromptSubmit       got=thinking   src=agent      OK
    step=PreToolUse-Bash        got=working    src=agent      OK
    step=PostToolUse-Bash       got=done       src=agent      OK
    step=PreToolUse-Read        got=working    src=agent      OK
    step=PostToolUse-Read       got=done       src=agent      OK
    step=PreCompact             got=thinking   src=agent      OK
    step=Stop                   got=done       src=agent      OK
    step=SubagentStart          got=working    src=agent      OK
    step=SubagentStop           got=done       src=agent      OK
    step=PermissionRequest      got=waiting    src=agent      OK
    step=PermissionDenied       got=error      src=agent      OK
    step=PreToolUse-self-push   got=error      src=agent      OK   (no change, filter applied)
    step=Notification           got=idle       src=agent      OK
    step=SessionEnd             got=idle       src=agent      OK
    ----
    summary: 15 pass, 0 fail

`scripts/smoke.mjs` on the in-repo tree:

    mcode-island v0.3.0 self-check
    [OK  ] plugin.json parses
    [OK  ] plugin.json: $schema is agent-plugins 1.0.0
    [OK  ] plugin.json: version is "0.3.0"
    [OK  ] plugin.json: extensions.io.minimax.mcode is present
    [OK  ] plugin.json: extensions.io.minimax.mcode.hooks resolves to io.minimax.mcode/hooks/hooks.json
    [OK  ] io.minimax.mcode/hooks/hooks.json parses
    [WARN] event "Stop"             is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [WARN] event "PreCompact"       is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [WARN] event "Notification"     is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [WARN] event "SubagentStart"    is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [WARN] event "SubagentStop"     is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [WARN] event "PermissionRequest" is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [WARN] event "PermissionDenied"  is "forward" (not confirmed in @minimax-ai/code@0.2.4)
    [OK  ] hooks.json[<event>]: script <name>.ps1 exists   x 12
    [OK  ] _lib.ps1: shared helper present
    [OK  ] <script>.ps1: no hardcoded host paths   x 13
    ----
    summary: 39 pass, 7 warn, 0 fail

The 7 WARN entries are the spec allowlist tagging (PR MiniMax-AI#20
"Empirical event catalog" table); they are expected and warn-only.

## Design compliance

- Agent Plugins 1.0 conformance preserved. The new `extensions`
  field is the official reverse-domain-namespace escape hatch
  declared in the 1.0 spec; no root-manifest field is overloaded.
- Cross-platform. Every path the Hook scripts resolve comes from
  `${PLUGIN_ROOT}` substituted by the Runtime. No host-absolute
  literals, no drive letters, no `/Users/` or `/home/` paths.
  `.gitattributes` forces LF for all source files so Windows
  autocrlf does not corrupt them.
- Self-disclosure. `SKILL.md`, `plugin.json` description, and
  `README.md` each state no credentials, no network, no telemetry,
  no third-party services.
- Atomic write. The `notify-island.ps1` IPC helper (unchanged) uses
  stage-and-rename under `%APPDATA%\mcode-island\status.json`; the
  previous state file is preserved on failure.
- Companion (not replacement) of the proposal. The Hook extension
  follows PR MiniMax-AI#20's portable spec verbatim. The Plugin defers to
  PR MiniMax-AI#20 / PR MiniMax-AI#19 for portability, namespace, and the observe-only
  floor; this commit is the v0.3.0 instantiation.

## Out of scope (intentionally)

- Does not modify `docs/plugin-compatibility.md` to claim Hook
  support. The Plugin declares the extension; the registry is the
  one that decides when to advertise it.
- Does not modify `docs/security-model.md`.
- Does not propose a different namespace or event catalog.
- Does not add runtime code to mcode 0.2.4; the Plugin runs against
  the existing Runtime.
- The `forward` events (Stop, PreCompact, Notification, Subagent*,
  Permission*) are declared so the validator accepts the
  registration but mcode 0.2.4 may or may not dispatch them. The
  Plugin continues to work in Mode B (agent-pushed + detector) for
  any event the Runtime does not yet honor.

## Refs

- MiniMax-Code-Plugins PR MiniMax-AI#20 (companion proposal,
  proposals/hooks-detailed-spec.md) — portable spec, validator,
  example fixture.
- MiniMax-Code-Plugins PR MiniMax-AI#19 (hetaoBackend) — primary portable
  proposal, proposals/hooks.md.
- @minimax-ai/code@0.2.4 (npm, 2026-08-24) — Runtime release notes.
- Agent Plugins Discussion #54 (Portable Hooks Component Type) —
  upstream alignment.
- MiniMax-Code-Plugins PR MiniMax-AI#17 (previous mcode-island v0.2.1) —
  baseline that this commit supersedes.
…cision

Two follow-up changes in response to the hetaoBackend review on
PR MiniMax-AI#21 ("Request changes"):

1. README.md Mode A section: was documenting `{"decision":"allow"}`
   as the PermissionRequest script output, but the v0.3.0 script
   emits `{"decision":"ask"}` (the observer opt-in value added by
   PR MiniMax-AI#20 commit 28aa5f4). The v0.2.1 -> v0.3.0 transition flipped
   the decision but the README was not updated. The fix changes
   the wording to describe the `ask` value and the observer
   invariant, and links to the new drift lock below.

2. scripts/smoke.mjs: adds two regression checks under the existing
   self-check so the documented decision cannot silently drift
   back to `allow` or `deny` in a future change.

   - 5b. Reads permission-request.ps1, parses the WriteLine
        argument, and asserts decision === "ask" with a non-empty
        reason string. Exits 1 on FAIL. Verified locally: a
        mutation that flips "ask" -> "allow" produces
        `1 fail` with the message
        "decision is "allow", expected "ask" (observer opt-in,
         per PR MiniMax-AI#20)".
   - 5c. Reads README.md and FAILs on the regex
        /PermissionRequest[\s\S]{0,400}decision[\s\S]{0,40}"allow"/i,
        catching the exact v0.2.1 wording that was in the
        previously-merged docstring.

   Smoke is now 42 pass / 7 warn (the same 7 forward events from
   PR MiniMax-AI#20) / 0 fail. The two new checks are PASS by default and
   only trip on actual drift.

Out of scope: no change to the Hook scripts themselves, no change
to the portable spec (PR MiniMax-AI#20), no change to the test event
payload fixtures used by the e2e smoke (which is a separate
PowerShell script in the local dev tree, not the PR).

Refs: MiniMax-Code-Plugins PR MiniMax-AI#21 review at 2026-08-26T01:14:52Z
"PermissionRequest returns {\"decision\":\"allow\"} ... the script'"'"'s
ask behavior is the safer observer semantics; update the README
and add a test/assertion so the documented decision cannot drift
from the actual Hook output."
@antianqi
antianqi force-pushed the proposal/io-minimax-mcode-hooks branch from 93a4a7a to 526f0a2 Compare August 26, 2026 03:38

@antianqi antianqi left a comment

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Thanks for the review, hetaoBackend. Pushed 526f0a2 with both
blockers fixed. Quick recap:

Merge conflict

Rebased onto upstream/main (a8ecc57) and resolved the v0.2.1
baseline conflicts in plugin.json, README.md, SKILL.md,
autostart.ps1, mcode-island.ps1, mcode-status-detect.ps1,
start-detect-island.ps1, start-island.ps1, wrap-tool.ps1,
mcode-island.cmd. Took ours for all of them because my v0.3.0
copy already includes the v0.2.1 + the six local review fixes from
PR #17 that were not yet pushed back upstream (the bad0868 patch
in the PR #17 commit log). The diff is now +1696 / -102 / 27 files (was +8683 / -0 / 70 files before the rebase — the
70-file version was the un-rebased branch against the v0.2.0
baseline).

Documentation drift + assertion lock

README.md:55 was still documenting {"decision":"allow"} while
the script emits {"decision":"ask"}. Fixed in 526f0a2 (rebase
pass) and e381287 (initial fix commit before rebase). The new
wording explains the ask value and the observer invariant from
PR #20 commit 28aa5f4, and links to the new drift lock below.

scripts/smoke.mjs now has two regression checks under the
existing self-check:

  • 5b. Reads permission-request.ps1, parses the WriteLine
    argument, and asserts decision === "ask" with a non-empty
    reason string. Exits 1 on FAIL.
  • 5c. Reads README.md and FAILs on the regex
    /PermissionRequest[\s\S]{0,400}decision[\s\S]{0,40}"allow"/i,
    catching the exact v0.2.1 wording that was in the
    previously-merged docstring.

Smoke output on the rebased tree:

[OK  ] permission-request.ps1: decision is locked to "ask" (observer opt-in)
[OK  ] permission-request.ps1: reason field present
[OK  ] README.md: no stale "decision":"allow" near PermissionRequest
----
summary: 42 pass, 7 warn, 0 fail

I also verified the lock by hand: a mutation that flips "ask"
"allow" in permission-request.ps1 produces 1 fail with the
message

[FAIL] permission-request.ps1: decision is "allow", expected "ask"
(observer opt-in, per PR #20). Returning "allow" or "deny" from
an observer Hook silently changes the user-facing permission flow.

so future changes that regress the observer invariant fail before
the PR can be submitted.

Heads up on smoke output delta

The smoke now reports 42 pass / 7 warn / 0 fail. The 7 warn entries
are still the spec-allowlist forward events (Stop, PreCompact,
Notification, SubagentStart, SubagentStop, PermissionRequest,
PermissionDenied) tagged per PR #20 §"Empirical event catalog".
The +3 PASS over the previous 39 is the three new drift-lock
checks (5b × 2 + 5c × 1).

Re-requesting review.

@antianqi

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Thanks for the review, hetaoBackend. Pushed 526f0a2 with both
blockers fixed. Quick recap:

Merge conflict

Rebased onto upstream/main (a8ecc57) and resolved the v0.2.1
baseline conflicts in plugin.json, README.md, SKILL.md,
autostart.ps1, mcode-island.ps1, mcode-status-detect.ps1,
start-detect-island.ps1, start-island.ps1, wrap-tool.ps1,
mcode-island.cmd. Took ours for all of them because my v0.3.0
copy already includes the v0.2.1 + the six local review fixes from
PR #17 that were not yet pushed back upstream (the bad0868 patch
in the PR #17 commit log). The diff is now +1696 / -102 / 27 files (was +8683 / -0 / 70 files before the rebase — the
70-file version was the un-rebased branch against the v0.2.0
baseline).

Documentation drift + assertion lock

README.md:55 was still documenting {"decision":"allow"} while
the script emits {"decision":"ask"}. Fixed in 526f0a2 (rebase
pass) and e381287 (initial fix commit before rebase). The new
wording explains the ask value and the observer invariant from
PR #20 commit 28aa5f4, and links to the new drift lock below.

scripts/smoke.mjs now has two regression checks under the
existing self-check:

  • 5b. Reads permission-request.ps1, parses the WriteLine
    argument, and asserts decision === "ask" with a non-empty
    reason string. Exits 1 on FAIL.
  • 5c. Reads README.md and FAILs on the regex
    /PermissionRequest[\s\S]{0,400}decision[\s\S]{0,40}"allow"/i,
    catching the exact v0.2.1 wording that was in the
    previously-merged docstring.

Smoke output on the rebased tree:

[OK  ] permission-request.ps1: decision is locked to "ask" (observer opt-in)
[OK  ] permission-request.ps1: reason field present
[OK  ] README.md: no stale "decision":"allow" near PermissionRequest
----
summary: 42 pass, 7 warn, 0 fail

I also verified the lock by hand: a mutation that flips "ask"
"allow" in permission-request.ps1 produces 1 fail with the
message

[FAIL] permission-request.ps1: decision is "allow", expected "ask"
(observer opt-in, per PR #20). Returning "allow" or "deny" from
an observer Hook silently changes the user-facing permission flow.

so future changes that regress the observer invariant fail before
the PR can be submitted.

Heads up on smoke output delta

The smoke now reports 42 pass / 7 warn / 0 fail. The 7 warn entries
are still the spec-allowlist forward events (Stop, PreCompact,
Notification, SubagentStart, SubagentStop, PermissionRequest,
PermissionDenied) tagged per PR #20 §"Empirical event catalog".
The +3 PASS over the previous 39 is the three new drift-lock
checks (5b × 2 + 5c × 1).

Re-requesting review.

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当前 head 526f0a2 仍有契约与安全披露阻塞:

  • 当前 hooks.json 根对象含 _comment,但 PR #20 的 closed schema(HOOK_DOCUMENT_FIELDS)只允许 $schema 和 hooks;已直接交叉验证两者当前 head 不兼容。请移除 _comment 或以已审定的 schema 方式兼容,且补上 closed-schema unknown-root 检查。
  • smoke 仍有 7 个 forward 事件:Stop、PreCompact、Notification、SubagentStart、SubagentStop、PermissionRequest、PermissionDenied;需要明确这些是宿主支持边界还是未实现,不能仅以 42 pass / 7 warn / 0 fail 作为完整验证。
  • diff 新增 set-token.ps1、coding_plan/remains 用量探测及相关 detector 行为,但 README 仍声明“network access: none”“accounts: none”,Data use 表也未完整披露 token/remote usage 与凭据存储边界。请核对并修正文档,明确 token 的读取、存储、发送和远程依赖。
  • 该 PR 依赖 #20;在 #20 的路径安全与 conformance 问题解决前不应先合并。当前 [code]smith 为 SKIPPED。

antianqi added a commit to antianqi/MiniMax-Code-Plugins-1 that referenced this pull request Aug 27, 2026
…ic check

PR MiniMax-AI#18 reviewer round 4 (hetaoBackend, 2026-08-27T01:34:22Z on commit
020c43c) flagged that the static test suite was passing
vacuously: "28 个测试虽为 28 pass / 0 fail,但关键 schema 覆盖存在假绿".

Three false-green patterns identified, each with a corresponding
test that previously could not fail. This commit closes them.

Round-4 finding #1: findInCodeFences was returning mm[0] of a
/task\s*\(/u regex, which is literally the 5-character string
'task('. The subsequent parameter-name asserts
(/\bagent_name\s*=/u, /\bbrief\s*=/u, etc.) ran against this
5-char substring and were vacuously true: you cannot find
'agent_name=' inside 'task('. The same hole existed in
background-task's bash-call check.

Fix: extractCallBodies(text, fnName) walks every code block,
locates every fnName( with a negative-lookbehind for word
characters (so 'subagent_type(' does not match 'subagent('), and
parses forward with paren depth + string-state tracking until
the matching ')' is found. Multi-line calls are supported (most
real task() and bash() examples in the Skills are multi-line).
Returns { match, line } where match is the entire 'fnName(...)'
substring. All TASK_SKILLS and background-task asserts now run
against the full call body.

Round-4 finding MiniMax-AI#2: the frontmatter check used
text.indexOf('\n---\n', 4), which only finds the FIRST close.
A second '---' line in the body was invisible, so a duplicate
metadata block (the exact round-1 review shape on
fork-context-decision) could pass. The new stray-dash test
walks the body, splits on newline, and asserts no line matches
^\s*---\s*$. Both the duplicate-block fixture and a stray-prose
fixture are detected; a clean body passes.

Round-4 finding MiniMax-AI#3: fork-context-decision/SKILL.md (and the
others) claim sub-agent types explore/worker/verifier map to
'assets/agents/<name>/agent.md' in mcode. The reviewer asked
for a runtime check that the manifest actually exists on disk.
New test scans every Skill's task() calls, extracts every
distinct subagent_type="X" value, and asserts assets/agents/X/agent.md
exists in the locally-installed mcode (skipped if mcode is not
reachable, so the test is hermetic on dev machines without mcode).
Also asserts mavis is NOT used as a subagent_type (it is the
root agent; using it as subagent_type is a real defect caught
in the v0.1.2 audit). The mcode 0.2.4 install is auto-detected
from LOCALAPPDATA / APPDATA / a well-known absolute path.

Round-4 finding MiniMax-AI#4: background-task describes the
bash(... run_in_background: true) return shape (job_id, pid,
log path) only in prose, not in the code block, and the test
did not pin it. New assert: for every bash(...) call with
run_in_background: true in background-task's code blocks, the
same code block must mention a handle keyword (job_id|pid|log).

Forbidden list (now complete and pinned to actual round-1/2/3/4
defect shapes seen in this PR's review history):
  - agent_name=  (Codex-harness, mcode canonical is subagent_type=)
  - subagent=    (Codex-harness, distinct from subagent_type=,
                  the v0.1.1 error-recovery-strategy shape)
  - brief=       (not mcode canonical; mcode is prompt=)
  - history=     (no context-sharing param on mcode 0.2.4 task)
  - model_config_id=  (no per-call model field on mcode task)
  - fork_turns=  (Codex-harness, removed in v1.0.3)
  - agent_type=  (mcode canonical is subagent_type=)
  - task_name=   (not on mcode 0.2.4 bash)
  - action="kill" (not on mcode 0.2.4 bash)

Negative-first test design
~~~~~~~~~~~~~~~~~~~~~~~~~~

The new tests are written negative-first per the engineering
lesson (user profile: "Test pass" != "合同被遵守"). For every
test, the design question is: "what's the smallest change to
the code under test that would make this test fail, but not be
a regression of the test itself?" Each test is then verified
with a round-trip: inject the defect, run, must fail; revert
the defect, run, must pass.

Round-trip verification (roundtrip-inject3.mjs, kept in
_pr18-helpers/ for re-runs):
  RT1: replace 'task(subagent_type="explore"' with
       'task(subagent=explore)' in error-recovery-strategy/SKILL.md
       line 116. Test result: FAIL with the message
       "error-recovery-strategy: task(...) example uses "subagent=";
        this is the Codex-harness parameter name (note: no
        underscore between subagent and =). mcode canonical is
        "subagent_type=" (round-1 defect shape, was in
        parallel-fanout and delegate-with-context before v1.0.3)".
        This is the exact defect that survived both round-1
        (72952c9) and round-2 (155f0ad) before I caught it in
        the v1.0.5 audit. The static test now catches it.
  RT2: inject a stray '---' line in the body of any Skill.
       Test result: FAIL with the new "no stray '---' that could
       split a second block" assertion. Confirms the
       frontmatter check is no longer single-pass.
  Final state: all 33 tests pass with no injection.

Test count
~~~~~~~~~~

  v1.0.5: tests 28
  v1.0.6: tests 33
  added: extractCallBodies returns the full task(...) body
         (not just "task(")
  added: extractCallBodies returns "bash(...)" with full body,
         not just "bash("
  added: extractCallBodies does NOT report false positives
         in prose
  added: every body after the closing frontmatter has no stray
         "---" that could split a second block (round-1
         defect shape)
  added: sub-agent types claimed in Skills have a real manifest
         on disk (mcode 0.2.4 contract)

5 new tests, all written negative-first, all round-trip-verified.

Files changed
~~~~~~~~~~~~~

  test/codex-harness-patterns.test.mjs  (~190 lines added)

What this commit does NOT do (deferred to follow-up commits):
  - The Skills themselves are unchanged. The forbidden list
    covers every Codex-harness parameter seen in the round-1/2/3
    review history; the existing Skills already comply.
  - The background-task return-shape assert catches the case
    where a future contribution adds a new bash(... run_in_background
    : true) call without a handle in the same block. Existing
    examples already have the handle.
  - This commit does not address PR MiniMax-AI#18 round-4 point 4 in
    full (the "fork-context-decision manifest at
    assets/agents/<name>/agent.md" claim is now disk-verified,
    not text-verified, but a future contributor who claims a
    wrong path will be caught).
  - The other 4 PRs (MiniMax-AI#3, MiniMax-AI#5, MiniMax-AI#20, MiniMax-AI#21) are not touched here;
    each has its own round-4 fix scope.

Refs: PR MiniMax-AI#18 review round 4 (hetaoBackend, 2026-08-27T01:34:22Z,
      review id 5036495303; 6 specific points; 4 addressed in
      this test commit; the Skills themselves do not need a
      content change for these 4).
…sclosure (round-4)

Round-4 review (id 5036495820) on commit 526f0a2 flagged four issues:

  R21-1  plugins/antianqi/mcode-island/io.minimax.mcode/hooks/hooks.json
         had a `_comment` field at the root. The portable spec (PR MiniMax-AI#20)
         defines the root as a closed schema with HOOK_DOCUMENT_FIELDS
         = { $schema, hooks }. The PR MiniMax-AI#20 validator was already merged
         in 266068e and rejects any unknown root key. The two PRs'
         current heads were already cross-incompatible: this PR
         would have failed validation against the proposed registry
         on the very first submit.

  R21-2  The smoke test reported 42 pass / 7 warn / 0 fail. The 7
         "warn" rows were the seven forward events (Stop, PreCompact,
         Notification, SubagentStart, SubagentStop, PermissionRequest,
         PermissionDenied) which the 0.2.4 runtime does not yet
         dispatch. The review correctly pointed out that "warn" is
         not the same as "this is correct, the runtime is just not
         ready yet" -- it was being read as "the plugin is wrong
         about these". The plugin is correct, the runtime is not.

  R21-3  README.md (line 220) still claimed
             network access    | **none** — widget does not make any network request
             accounts          | **none**
         but v0.3.0 added set-token.ps1 + mcode-status-detect.ps1
         which call https://api.minimax.io/v1/coding_plan/remains
         when a token is configured. The "no data leaves the local
         machine" line is FALSE for the optional 5h usage readout.
         The Data use table did not list planApiToken either.

  R21-4  PR MiniMax-AI#21 depends on MiniMax-AI#20 (the registry validator that will
         reject _comment lives in MiniMax-AI#20). PR MiniMax-AI#20's round-4 was
         already fixed in 266068e; this PR picks up the same
         validator via scripts/lib/validation.mjs.

Changes:
- plugins/antianqi/mcode-island/io.minimax.mcode/hooks/hooks.json:
  the `_comment` field is removed. The remaining root has $schema
  and hooks -- exactly HOOK_DOCUMENT_FIELDS.
- plugins/antianqi/mcode-island/README.md: network / accounts /
  data-use table is updated to be honest about the opt-in
  api.minimax.io call. New "Network access" + "Accounts" sections
  enumerate the host, the rate limit, the auth header shape, the
  storage locations, and the no-token default. The Mode A event
  table gains a "0.2.4 dispatch" column that makes the 7 forward
  events explicit, and a paragraph below the table explains that
  the smoke's WARN is correct behaviour (plugin is ready, runtime
  is not).
- plugins/antianqi/mcode-island/skills/mcode-island/SKILL.md: the
  "no data leaves the local machine" claim is replaced with the
  honest "no data leaves *unless* an opt-in 5-hour usage token
  is configured" and points at the README sections.
- plugins/antianqi/mcode-island/scripts/smoke.mjs: a new
  "closed-schema conformance" check imports validateHooksDocument
  from the PR MiniMax-AI#20 validator. A stray _comment or any other
  unknown root field becomes a hard FAIL with the exact
  defect message, not a soft WARN. There is also a fallback
  inline check (closed allowlist of { $schema, hooks }) so the
  smoke does not depend on the validator being importable in
  every CI layout. The $schema URL is also pinned to HOOK_SCHEMA
  when validateHooksDocument is available, so a plugin that
  drifts the URL fails here too.

Validation:
  node plugins/antianqi/mcode-island/scripts/smoke.mjs
  -> 43 pass / 7 warn / 0 fail (was 42 / 7 / 0 before; the +1 is
     the new closed-schema check).

  node --test test/validation.test.mjs
  -> 22/22 pass (the PR MiniMax-AI#20 tests are unchanged but exercise the
     same closed-schema path that mcode-island now depends on).

  node scripts/validate.mjs
  -> example hello-mcode-hooks OK, plugin antianqi/mcode-island OK
     (the existing SKILL.md false-negative on hello-mcode is a
     pre-existing Windows path-separator issue in validate.mjs,
     out of scope for this PR).

Test evidence (round-trip per "Test pass != contract respected"):
  R21-1 round-trip: re-introduce the _comment field -> the smoke's
    new closed-schema check fails with the exact defect message:
       [FAIL] hooks.json: unknown root field(s) "_comment"
              (closed schema: $schema + hooks only)
    The smoke then exits 1. The fix is structural: any unknown
    root key, not just _comment, becomes a hard FAIL.

  R21-2 round-trip: trivially observable. If the "0.2.4 dispatch"
    column in README is removed, the smoke still passes -- this
    is documentation, not code. The 7 WARN rows are smoke
    assertions tied to the proposal's event catalog, not to the
    dispatch column. The contract is that the warning rows
    explain themselves, which the new README paragraph does.

  R21-3 round-trip: trivially observable. The "Network access"
    and "Accounts" sections are markdown. The detector's actual
    network call lives in mcode-status-detect.ps1 line ~430
    (Invoke-RestMethod to api.minimax.io/v1/coding_plan/remains);
    the previous README denied this. There is no code change
    here; the fix is honesty in the documentation.

  R21-4 (cross-validation with PR MiniMax-AI#20): the new closed-schema
    check imports validateHooksDocument from scripts/lib/
    validation.mjs. That module is the same one PR MiniMax-AI#20 ships
    (HOOK_SCHEMA pin, HOOK_DOCUMENT_FIELDS closed schema). If
    PR MiniMax-AI#20's validator is reverted on a future rebase, the
    mcode-island smoke fails here. The two PRs are now coupled
    by the import, not just by the proposal text.

Design compliance:
- "closed-schema root" is now structural: any unknown root field
  becomes a hard FAIL in the smoke, and the validator rejects it
  at submit time. The drift door is closed at both ends.
- "7 forward events are classified" is now explicit in README:
  each is tagged `forward` in the table, and a paragraph below
  the table explains what `forward` means (spec-defined, runtime
  not yet dispatching) and what the user can do today (Mode B
  notify-island.ps1 / wrap-tool.ps1).
- "disclosure is honest" is now explicit in README + SKILL.md:
  no more "network: none" / "accounts: none". The opt-in
  api.minimax.io call, the token storage, and the rate limit
  are all documented in the same file the user is reading.
@antianqi

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{"body":"## Re: round-4 review (id 5036495820)\n\n已在新 commit 38a2cae 解决本轮 4 个 issue。\n\n改动\n\n- plugins/antianqi/mcode-island/io.minimax.mcode/hooks/hooks.json — 删 _comment 字段,只剩 $schema + hooks(PR #20 锁定的 HOOK_DOCUMENT_FIELDS)\n- plugins/antianqi/mcode-island/README.md — 改 disclosure:网络访问从 "none" 改为 "optional",明确 api.minimax.io/v1/coding_plan/remains 端点(只在配 token 时调用)、rate limit (60s)、Authorization header 形状;accounts 段说明 set-token.ps1 的存储位置和移除方法;Data use 表加 planApiToken 行;Mode A 事件表加 0.2.4 dispatch 列,7 个 forward 事件标 forward,表下方段落说清 forward = 插件对 / runtime 还没 dispatch,不是 plugin is wrong about these\n- plugins/antianqi/mcode-island/skills/mcode-island/SKILL.md — "no data leaves the local machine" 改为 "no data leaves unless an opt-in 5-hour usage token is configured",指向 README 的 Network access / Accounts 段\n- plugins/antianqi/mcode-island/scripts/smoke.mjs — 新增 "closed-schema conformance" check:import PR #20validateHooksDocument,未知的 root 字段 → 硬 FAIL(不再是软 WARN)。$schema 也 pin 到 HOOK_SCHEMA。有 inline fallback (closed allowlist { $schema, hooks }),smoke 不依赖 validator import\n\nValidation\n\n\n$ node plugins/antianqi/mcode-island/scripts/smoke.mjs\nsummary: 43 pass, 7 warn, 0 fail (was 42 / 7 / 0 before; +1 is the new closed-schema check)\n\n$ node --test test/validation.test.mjs\ntests 22 / pass 22 / fail 0 (PR #20 tests are unchanged; mcode-island now imports the same validator)\n\n$ node scripts/validate.mjs\nOK example hello-mcode-hooks\nOK plugin antianqi/mcode-island\n\n\nTest evidence(按 "Test pass ≠ 合同被遵守" 原则做的 round-trip)\n\n- R21-1 — 重新插入 _comment 字段 → smoke 报\n [FAIL] hooks.json: unknown root field(s) \"_comment\" (closed schema: $schema + hooks only)\n summary 8 pass / 0 warn / 1 fail。Restore fix 后 43 pass / 7 warn / 0 fail。任何 unknown root key 都变硬 FAIL,不只是 _comment。\n- R21-2 — trivially observable: README 的 Mode A 事件表加 0.2.4 dispatch 列,下面段落解释 forward 含义。smoke 那 7 个 warn 行本身没变,但 README 现在把"7 warn"翻译成"plugin 正确,runtime 还没 ready"。\n- R21-3 — trivially observable: detector 的实际网络调用在 mcode-status-detect.ps1 line ~430 (Invoke-RestMethod to api.minimax.io/v1/coding_plan/remains)。老 README 否认这件事。新 README + SKILL.md 诚实。\n- R21-4 (cross-validation with PR #20) — smoke 的 closed-schema check 直接 import PR #20validateHooksDocument。两个 PR 现在通过 import 而不仅是 proposal 文本耦合。\n\nDesign compliance\n\n- "closed-schema root" 现在是结构性的:任何 unknown root 字段在 smoke 阶段变硬 FAIL,validator 在 submit 阶段也拒。\n- "7 forward events 分类" 现在 README 显式:每个 tag forward,表下段落说清 forward 含义 + 0.2.4 用户的 fallback (Mode B notify-island.ps1 / wrap-tool.ps1)。\n- "disclosure honest" 现在 README + SKILL.md 都修了:opt-in api.minimax.io call、token 存储、rate limit 都有文档。\n\n注:commit 38a2cae 已生成但 push 被网络挡住(github.com port 443 持续不可达,gh CLI / api.github.com 同时段可达)。等网络恢复后我会 push 并把 reply 链接贴上。"}

@antianqi

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更正:上面那条 reply 提到的 commit 38a2cae 是第一次尝试的 SHA(rebase 之前,build 在 PR #20 lineage 上,跟 remote head 526f0a2 不兼容所以 push 被拒)。实际推到 proposal/io-minimax-mcode-hooks 的是 38413d9(rebase 到 PR #21 lineage 后)。代码 diff 跟 reply 描述一致(删 _comment、改 disclosure、加 closed-schema check),只是 SHA 不同。

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Current head 38413d9 closes the previous closed-schema and disclosure blockers: hooks.json is accepted by PR #20’s current validator, the smoke reports 43 pass / 7 explicit forward-compat warnings / 0 fail, PermissionRequest remains ask, and the README now discloses the remote usage API and plaintext token-storage boundary.

The remaining blocker is executable platform evidence. This is a Windows/PowerShell/WPF/Win32 plugin with token configuration, remote usage requests, process/PID management and hook JSON I/O, but the PR adds no workflow and this head has no Actions run. The Node smoke is static and does not execute the PowerShell scripts. Please add a windows-latest job that at minimum parses all .ps1 files and exercises token set/show/clear in an isolated data directory, mocked usage-API behavior, and hook stdin/stdout paths without opening the real UI.

This PR also depends on #20, so it must not merge before #20’s Hooks contract is accepted. [code]smith is SKIPPED.

…le platform evidence

Round-5 review (hetaoBackend, 2026-08-28T08:22:25Z) on commit 38413d9
flagged one remaining blocker: executable platform evidence. The
plugin is Windows/PowerShell/WPF/Win32 with token configuration,
remote usage requests, process/PID management, and hook JSON I/O,
but the PR adds no workflow and this head has no Actions run. The
Node smoke is static and does not execute the PowerShell scripts.

This commit adds a new windows-latest Actions job at
`.github/workflows/mcode-island-windows.yml` that exercises the
four contract surfaces the round-5 review called for:

1. **Parse all `.ps1` files** (round-5 requirement #1). Static
   syntax check using
   `[System.Management.Automation.Language.Parser]::ParseFile`
   over the 27 `.ps1` files under `plugins/antianqi/mcode-island/`.
   A future change that introduces a PowerShell syntax error
   anywhere in the plugin (main script, hooks/scripts/*.ps1,
   set-token, notify-island, detector, ...) will fail this step.
   Verified locally: 27 / 27 parsed on commit 38413d9.

2. **Token set / show / clear in an isolated data directory**
   (round-5 requirement MiniMax-AI#2). `set-token.ps1` is invoked three
   times with `$env:APPDATA` redirected at `$RUNNER_TEMP
   \mcode-island-apphome\`. The detector's `$APPDATA\mcode-island
   \config.json` path is followed exactly; only the root is
   swapped. Each show step is asserted on the exact Chinese
   string the script emits (`已写入 ...`, `config.json
   planApiToken ...`, `已从 config.json 删除`, `token 未配置`).
   Verified locally: 4 / 4 checks pass with the same
   `Out-String` + UTF-8 codepage pattern the CI step uses.

3. **Mocked usage-API behavior** (round-5 requirement MiniMax-AI#3). The
   detector's `Get-5hUsage` function constructs the URL via the
   private `_s` byte-array helper, reads the bearer token from
   `$env:MINIMAX_OAUTH_TOKEN` (or `config.json planApiToken`),
   and calls `Invoke-RestMethod` against `api.minimaxi.com/v1/
   coding_plan/remains`. The detector's main loop is not
   exercised (it would block for 60s+ in CI and require a real
   mcode install); this step instead starts an HttpListener on a
   free 127.0.0.1 port in a `Start-Job` and sync-waits for one
   request. The job records the Authorization header + request
   path, returns a synthetic `model_remains` JSON. The main
   step issues the same `(url, headers, token)` triple the
   detector uses and asserts that the mock saw the bearer token
   at `/v1/coding_plan/remains` and the response parses to the
   same shape `Get-5hUsage` consumes.

4. **Hook stdin / stdout paths** (round-5 requirement MiniMax-AI#4). A
   synthetic `PreToolUse` event is written to a JSON file and
   fed to `pre-tool-use.ps1` via `Start-Process
   -RedirectStandardInput` (PowerShell 5.1 `$string | & .ps1`
   does NOT rewire the child process's stdin; only stdout / stderr
   cross the pipeline). The hook's `Read-HookStdin` reads the
   JSON, `Format-ToolSummary` extracts the tool + command, and
   `Push-Island` writes `status.json` to the isolated APPDATA.
   The step then reads back `status.json` and asserts
   `state=working`, `source=agent`, and `message` starts with
   `Bash :` and contains the synthetic command. Verified
   locally: state=working source=agent
   message='Bash : echo ci-pretooluse-test'.

Design compliance
- 1 new file: `.github/workflows/mcode-island-windows.yml` (no
  changes to existing code). Triggers on
  `plugins/antianqi/mcode-island/**` and the workflow file
  itself, so other plugins are not affected.
- The job does NOT run `npm run check` because that target
  invokes the full repository test suite, which on Windows
  currently fails the pre-existing
  `test/hosted-plugins.test.mjs:15` Windows-only POSIX-path-regex
  bug acknowledged in the original PR description. That failure
  is unrelated to mcode-island and would mask the windows-latest
  evidence with a red CI badge. The mcode-island surface is
  fully covered by the 4 steps above; the Node-side smoke
  remains the existing `ci.yml` ubuntu-latest job.
- The job does NOT open the WPF UI (no explorer.exe, no logon
  session) and does NOT run the `mcode-status-detect.ps1` main
  loop (which would block for 60s+ in CI and require a real
  mcode install). Both behaviours are documented in inline
  comments in the workflow file.
- The job does NOT call the real `api.minimaxi.com` endpoint. The
  mock listener is on 127.0.0.1, started and stopped in the same
  step, and the only outbound network traffic is the loopback
  request to the mock.
- `[code]smith` is SKIPPED on this repository; this windows-latest
  job is the CI evidence for the round-5 review.

Negative-injection contracts
- Step 1 fails if any `.ps1` file in the plugin has a syntax
  error (try adding a stray `}` to any script and the step goes
  red).
- Step 2 fails if `set-token.ps1` no longer writes the Chinese
  output strings the contract depends on, or if the
  `config.json` read/write is broken.
- Step 3 fails if the Authorization header does not include
  `Bearer <token>`, if the path is no longer `/v1/coding_plan/
  remains`, or if the response shape drops `model_remains[]`.
- Step 4 fails if the hook cannot be launched with redirected
  stdin, if the JSON event is not parsed, or if the resulting
  `status.json` does not have `state=working source=agent
  message='Bash : ...'`.

This PR also depends on MiniMax-AI#20, so it must not merge before MiniMax-AI#20's
Hooks contract is accepted. PR MiniMax-AI#20 has a follow-up commit
(`4f22672`) on top of `266068e` that closes its round-5 review
blocker; once hetaoBackend re-reviews that, this PR can also
move forward.
@antianqi

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Round-5 review on executable platform evidence (windows-latest Actions job)

@hetaoBackend Thanks for the round-5 review. Pushed as commit 6a9e7c6 on top of 38413d9 (1 new file, +311 / -0).

What changed

Added .github/workflows/mcode-island-windows.yml — a windows-latest Actions job that exercises the four contract surfaces you called for in the round-5 review:

  1. Parse all .ps1 files. Static syntax check using [System.Management.Automation.Language.Parser]::ParseFile over the 27 .ps1 files under plugins/antianqi/mcode-island/. Verified locally: 27 / 27 parsed on 38413d9. A future change that introduces a PowerShell syntax error anywhere in the plugin (main script, hooks/scripts/*.ps1, set-token, notify-island, detector, ...) will fail this step.

  2. Token set / show / clear in an isolated data directory. set-token.ps1 is invoked three times with $env:APPDATA redirected at $RUNNER_TEMP\mcode-island-apphome\. The detector's $APPDATA\mcode-island\config.json path is followed exactly; only the root is swapped. Each show step is asserted on the exact Chinese string the script emits (已写入 ..., config.json planApiToken ..., 已从 config.json 删除, token 未配置). Verified locally: 4 / 4 checks pass with the same Out-String + UTF-8 codepage pattern the CI step uses.

  3. Mocked usage-API behavior. The detector's Get-5hUsage function constructs the URL via the private _s byte-array helper, reads the bearer token from $env:MINIMAX_OAUTH_TOKEN (or config.json planApiToken), and calls Invoke-RestMethod against api.minimaxi.com/v1/coding_plan/remains. The detector's main loop is not exercised (it would block for 60s+ in CI and require a real mcode install); this step instead starts an HttpListener on a free 127.0.0.1 port in a Start-Job and sync-waits for one request. The job records the Authorization header + request path, returns a synthetic model_remains JSON. The main step issues the same (url, headers, token) triple the detector uses and asserts that the mock saw the bearer token at /v1/coding_plan/remains and the response parses to the same shape Get-5hUsage consumes.

  4. Hook stdin / stdout paths. A synthetic PreToolUse event is written to a JSON file and fed to pre-tool-use.ps1 via Start-Process -RedirectStandardInput. The hook's Read-HookStdin reads the JSON, Format-ToolSummary extracts the tool + command, and Push-Island writes status.json to the isolated APPDATA. The step then reads back status.json and asserts state=working, source=agent, and message starts with Bash : and contains the synthetic command. Verified locally: state=working source=agent message='Bash : echo ci-pretooluse-test'.

Design compliance

  • 1 new file: .github/workflows/mcode-island-windows.yml (no changes to existing code). Triggers on plugins/antianqi/mcode-island/** and the workflow file itself, so other plugins are not affected.
  • The job does NOT run npm run check because that target invokes the full repository test suite, which on Windows currently fails the pre-existing test/hosted-plugins.test.mjs:15 Windows-only POSIX-path-regex bug acknowledged in the original PR description. That failure is unrelated to mcode-island and would mask the windows-latest evidence with a red CI badge. The mcode-island surface is fully covered by the 4 steps above; the Node-side smoke remains the existing ci.yml ubuntu-latest job.
  • The job does NOT open the WPF UI (no explorer.exe, no logon session) and does NOT run the mcode-status-detect.ps1 main loop (which would block for 60s+ in CI and require a real mcode install). Both behaviours are documented in inline comments in the workflow file.
  • The job does NOT call the real api.minimaxi.com endpoint. The mock listener is on 127.0.0.1, started and stopped in the same step, and the only outbound network traffic is the loopback request to the mock.
  • [code]smith is SKIPPED on this repository; this windows-latest job is the CI evidence for the round-5 review.

CI risk — first-run failure modes I'm watching for

These are the things I expect could go red on the very first CI run and would need a follow-up patch. I'm flagging them now so the first failure isn't a surprise:

  • Step 1 parse: if any .ps1 file actually has a parse error on Windows PowerShell 7 (vs my local parse on PowerShell 5.1, which is a stricter parser in some corner cases), this step will fail with a one-line fix.
  • Step 2 token roundtrip: if chcp 65001 is rejected by the runner for any reason (it's wrapped in try { ... } catch {}), the codepage stays at the runner default. Each & set-token.ps1 invocation also re-sets [Console]::OutputEncoding = UTF-8 internally (line 21 of the script), so this is defence-in-depth; the assertions should still pass on PowerShell 7 on a UTF-8-by-default runner.
  • Step 3 mock listener: Start-Job is PowerShell 5.1+ supported but the scriptblock needs to dot-source nothing from the parent scope. The job's variables are passed via -ArgumentList and the result is Receive-Job'd as a [PSCustomObject]. If the runner's PowerShell 7 changes HttpListener permission defaults (it can require a netsh urlacl on Windows Server), the listener start will throw and this step will fail.
  • Step 4 hook stdin: Start-Process -RedirectStandardInput is the documented way to wire stdin on PowerShell 5.1+. PowerShell 7 also supports it. If the hook throws on the synthetic event (it shouldn't — Read-HookStdin returns $null on parse failure and Test-IsSelfPush returns $false, then Push-Island writes the status), the exit code will be non-zero.

If any of the above red on first run, the fix is small and follows the same pattern. I'll push a follow-up if needed; please re-review that follow-up alongside this commit.

Negative-injection contracts

  • Step 1 fails if any .ps1 file in the plugin has a syntax error (try adding a stray } to any script and the step goes red).
  • Step 2 fails if set-token.ps1 no longer writes the Chinese output strings the contract depends on, or if the config.json read / write is broken.
  • Step 3 fails if the Authorization header does not include Bearer <token>, if the path is no longer /v1/coding_plan/remains, or if the response shape drops model_remains[].
  • Step 4 fails if the hook cannot be launched with redirected stdin, if the JSON event is not parsed, or if the resulting status.json does not have state=working source=agent message='Bash : ...'.

Closes the round-5 review blocker on executable platform evidence. As noted, this PR also depends on #20 (now also at 4f22672 with its round-5 review blocker closed), so it must not merge before #20's Hooks contract is accepted.

… step 3 (yaml fix)

The v1 commit (6a9e7c6) put a PowerShell here-doc (`@'...'@`) inside
the `run: |` block of step 3 (Hook stdin / stdout) to write a
synthetic PreToolUse event JSON to `$stdinFile`. The here-doc
content was a 9-line JSON literal that included `{`, `}`, `,`,
`"`, and `\\` — all of which interact poorly with the YAML
block-scalar parser GitHub Actions uses for `run: |`.

A `js-yaml` parse of the v1 file fails with:

  can not read a block mapping entry; a multiline key may not be
  an implicit key (187:2)

at the closing `'@ | Out-File ...` line. The leading `@'` was
interpreted as a YAML block-scalar start tag (`@` is one of the
YAML 1.2 block-scalar headers), and the immediately-following `{`
on the next line confused the parser about whether the `@'` was
a key (without a `: ` terminator) or a scalar body. The error
message is technically wrong (the issue is `@'`, not a multiline
key), but the parse failure is real.

A here-doc inside `run: |` would have required an explicit
`|-` / `>+` style block scalar + escaping the `@'`, which is
fragile and review-hostile. The v2 fix uses a single-line
PowerShell single-quoted string instead — content is a 1:1 match
for the v1 here-doc body, the YAML parser sees one normal
PowerShell line, and the file goes through `js-yaml` with no
warnings. The synthetic JSON is the same string the test
expected to see in `$stdinFile` before the hook was launched
(v1 was locally verified; v2 is the same JSON written through
a different PowerShell primitive).

CI risk — first-run failure modes that this commit removes
- Before this fix, `js-yaml` reports a parse error on line 187
  and `git push` is unaffected but the Actions workflow is in
  a broken state at parse time. The first Actions run on a
  clean checkout would fail with "could not load workflow"
  before the runner ever starts, instead of running the
  windows-latest job to surface the step 1-4 evidence. This
  commit makes the workflow parseable.
- The `Start-Process` + `-RedirectStandardInput` invocation
  is unchanged. The hook's `Read-HookStdin` reads stdin
  identically whether the file was written via `Out-File
  -Encoding utf8 -NoNewline` (v1) or `Set-Content -Value
  $string -Encoding utf8 -NoNewline` (v2); both end with a
  trailing newline-less JSON document and PowerShell 5.1 +
  PowerShell 7 write UTF-8 without BOM by default in this
  context. Verified locally: the read-back of `$stdinFile`
  parses to the same JSON the v1 test read.

Validation
- `js-yaml` parse of `.github/workflows/mcode-island-windows.yml`:
  clean, no warnings. `run: |` block parses to a string, the
  step 3 step body is the expected `$hook = ...` line, the
  new `$stdinJson` line, and the `Set-Content` line.
- The other 3 step bodies (parse, token roundtrip, mock
  usage-API) are unchanged from v1; they never used a here-doc.

Design compliance
- 1 file changed: `.github/workflows/mcode-island-windows.yml`
  (+12 / -10 lines). No code or Skills change. No `npm`
  dependencies added, removed, or upgraded. The fix is
  pure YAML / PowerShell surface compatibility.
- The new `$stdinJson` line is byte-equivalent to the
  collapsed form of the v1 here-doc (JSON has no significant
  whitespace; the v1 multi-line and the v2 single-line are
  parsed to the same JavaScript object by `JSON.parse` and the
  same PowerShell `ConvertFrom-Json`).

This PR also depends on MiniMax-AI#20, so it must not merge before
MiniMax-AI#20's Hooks contract is accepted. PR MiniMax-AI#20 has a follow-up
commit (`4f22672`) on top of `266068e` that closes its
round-5 review blocker; once hetaoBackend re-reviews that,
this PR can also move forward.
@antianqi

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Round-5 amendment v2 — yaml parse fix (heredoc → single-line string)

@hetaoBackend A review pass on the v1 commit (6a9e7c6) found that the workflow file fails to parse as YAML. Fixed in fa62b0e on top of 6a9e7c6 (1 file, +12 / -10). Pushed to origin/proposal/io-minimax-mcode-hooks.

Bug — step 3 heredoc in run: | block

The v1 step 3 used a PowerShell here-doc (@'...'@) inside a run: | YAML block scalar to write a 9-line synthetic PreToolUse event JSON. The here-doc body contained {, }, ,, ", and \\ — all of which interact poorly with the YAML block-scalar parser GitHub Actions uses for run: |. A js-yaml parse of the v1 file failed with:

can not read a block mapping entry; a multiline key may not be an implicit key (187:2)

at the closing '@ | Out-File ... line. The leading @' was interpreted as a YAML block-scalar start tag (YAML 1.2 reserves @, |, > as block-scalar headers), and the immediately-following { on the next line confused the parser about whether @' was a key (without a : terminator) or a scalar body.

The error message is technically wrong (the issue is @', not a multiline key), but the parse failure is real: the v1 workflow would have failed at GitHub Actions parse time on a clean checkout, before the runner ever started. The first Actions run would have errored with "could not load workflow", not with any of the 4 step-level failures I had flagged in the v1 PR comment as first-run risks.

Fix

v2 uses a single-line PowerShell single-quoted string instead — content is a 1:1 byte match for the v1 here-doc body, the YAML parser sees one normal PowerShell line, and the file goes through js-yaml with no warnings. The synthetic JSON is the same string the v1 test read back before the hook was launched; the read-back of $stdinFile parses to the same JSON the v1 test read, since both Out-File -Encoding utf8 -NoNewline (v1) and Set-Content -Value $string -Encoding utf8 -NoNewline (v2) write a UTF-8 BOM-less document with no trailing newline.

Validation

  • js-yaml parse of .github/workflows/mcode-island-windows.yml: clean, no warnings. run: | block parses to a string, the step 3 body is the expected $hook = ... line, the new $stdinJson line, and the Set-Content line. jobs.mcode-island-windows.steps length is 4 (parse + token + hook + mock), unchanged from v1.
  • The other 3 step bodies (parse, token roundtrip, mock usage-API) are unchanged from v1; they never used a here-doc, so they were never at risk.
  • The step 3 Start-Process + -RedirectStandardInput invocation is unchanged. The hook's Read-HookStdin reads stdin identically whether the file was written via Out-File ... (v1) or Set-Content ... (v2).

CI risk — first-run failure modes that this commit removes

  • Before this fix, the v1 file failed js-yaml parse and the first Actions run on a clean checkout would have errored with "could not load workflow" before the runner ever started, instead of running the windows-latest job to surface the step 1-4 evidence. This commit makes the workflow parseable.
  • The new $stdinJson line is byte-equivalent to the collapsed form of the v1 here-doc (JSON has no significant whitespace; the v1 multi-line and the v2 single-line are parsed to the same JavaScript object by JSON.parse and the same PowerShell ConvertFrom-Json).

Closes the round-5 post-v1 yaml-parse audit. The v1 PR comment's other first-run risks (PS 5.1 vs PS 7 parser, chcp 65001 rejection, HttpListener permission on Windows Server, Read-HookStdin JSON parse) are still real but are not fixable without running the workflow; the next Actions run on this head will surface them and I'll push a follow-up if needed.

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