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msd-core/src
Tom Boucher 4b66bf4560 fix(#3086): apply #2667 .cmd-shim gate to deps.spawn + surface errorCode in review lanes (#3142)
* fix(#3086): apply #2667 .cmd-shim gate to deps.spawn + surface errorCode in review lanes

deps.spawn used shell:false with a bare binary name — on Windows, npm-installed
CLIs (gemini, codex, etc.) are .cmd shims that CreateProcess cannot start,
producing ENOENT + empty stderr. The review path then wrote an empty err file
and emitted a generic 'failed or returned empty output' stub.

Two fixes:
1. deps.spawn: detect .cmd/.bat on win32 and mediate through cmd.exe /d /s /c
   (same gate as runWithTimeout #2667, same explicit argv array).
2. runSpawnLane: surface errorCode (ENOENT, ETIMEDOUT) in the err file so the
   stub explains WHY the lane produced nothing.

* chore(#3086): backfill changeset PR number 3142

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Co-authored-by: sim <sim@local>
2026-08-07 07:43:14 -04:00
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