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OrcaWin 3f90d2cf91 fix(windows): make the GPU fallback actually remove the GPU child, and stop WSL latching absent
Three Windows crash/regression fixes from shipped 1.4.156/1.4.158/1.4.159 crash reports.

GPU fallback (cluster D, 14 reports, exit 0x80000003 STATUS_BREAKPOINT):
the software-rendering fallback called disableHardwareAcceleration() plus
--disable-gpu, neither of which removes the GPU child process — Chromium still
spawns it to host Viz and merely drops the backend to software GL. Measured on
Windows 11 / Electron 43.1.0: gpuProcessCount stays 1. So a GPU process being
killed by a bad driver or an injected DLL kept dying after the fallback engaged,
on every launch, for the life of that build (the marker is sticky per version).
The crash tails show exactly this: gpu_fallback_applied followed by another GPU
crash 1.3s later. --in-process-gpu is the only switch that drops the child count
to 0; --disable-software-rasterizer is deliberately excluded because it also
kills SwiftShader, which would drop every terminal to the DOM renderer.

WSL distro list: a successful-but-empty `wsl --list --quiet` was cached for the
process lifetime. `wsl --install` reports zero distros while one is still
provisioning, so an early probe latched "no WSL" until restart — WSL appeared
during setup and then vanished from the terminal picker. Empty results now
re-probe on an exponential window (15s doubling to a 5min cap) while staying
readable, so a missing distro is still visible to isKnownMissingDistro.

WSL availability: isWslAvailable() latched false on any failure via a bare catch,
so one slow wsl.exe activation disabled WSL for the whole session. Failures are
now classified — a numeric exit status or ENOENT is answer-shaped and holds for
10min, anything else (timeout, spawn failure) retries after 45s — and both back
off per consecutive failure, mirroring isPwshAvailable.

Windows-only: every changed path is behind an existing process.platform check,
so macOS and Linux behaviour is unchanged.
2026-07-29 17:36:24 -07:00
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2026-07-09 21:54:22 -07:00