reconnectGateway()'s in-flight lock lives at renderer module scope, so it
only dedupes reconnects inside ONE window. Two windows racing the same
wake both invoke the main-process backend ensure IPC, and for a pooled
SSH connection the loser of the pool-entry race could bootstrap a
duplicate remote backend (two tunnels, two remote serve processes).
Electron main is the single owner of backend lifecycles, so the claim
now lives there: BackendDialClaims keys in-flight dials by the pool
scope key from backendScopeKey(connectionId, profile) — the composite
identity seam wave-1 #93189 established for effective-identity reuse.
'hermes:connection' and 'hermes:connection:for' route through
backendDialClaims.run(), so concurrent renderer dials for one scope
coalesce onto one spawn and the second caller receives the first's
result. A claim exists only while its dial promise is unsettled: both
outcomes release it, a failed dial is never cached (fail closed, not
latched), and a synchronously-throwing dial rejects the claim instead
of escaping the seam.
The #93910 resume rebuild re-dials retired pool keys through the same
claim (redialPoolBackendAfterResume + new parseBackendScopeKey), so a
resume-driven rebuild and a concurrent renderer reconnect also coalesce
instead of racing.
Teknium
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