Files
orca/native
Orca Worker 35d7fb7726 fix(computer-use): prove a helper never started before replaying its request
The retry that replaced the permanent-latch bug could deliver unrequested
input. send() re-sent the same request whenever the helper died without
replying, but "no reply came back" is not "the operation did not run":
runtime.ps1 synthesizes the click and only then builds the snapshot, which
allocates a full-window bitmap and walks the UIA tree — a native GDI+/UIA fault
there is uncatchable, and leaves the click already delivered. A deterministic
fault meant three clicks from the host plus a fourth from the one-shot bridge,
surfaced as a single failed operation.

-Serve now writes one {"ready":true} line after its Add-Type work and before
its first read, so "never started" is a fact rather than an inference. A request
is replayed only when the helper died before announcing. A runtime.ps1 that
predates the announcement — reachable through the provider path override — is
covered by an observation-tool allowlist until a ready line proves otherwise.

Host-detected aborts (timeout, desynchronised reply, oversized line) suppress
the exit handler, so they were bypassing failure accounting entirely and a
helper failing that way was respawned once per operation forever. They now
count and are logged.

Also stop charging twice for one outage: entering the cooldown resets the
failure count, so the first death after recovery no longer re-enters a full
cooldown and an interleaved workload cannot be stranded on the one-shot bridge.
2026-09-01 00:54:08 -07:00
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