Merged via squash.
Prepared head SHA: b6fd32ed6e
Local prep note: pnpm build passed. pnpm check hit the npm shrinkwrap guard because @anthropic-ai/sdk@0.100.1 is no longer resolvable before 2026-05-24T20:18:43Z; the same shrinkwrap guard failure reproduces on current origin/main at 66b91d78fe, and this PR does not touch dependency manifests or lockfiles.
Co-authored-by: ngutman <1540134+ngutman@users.noreply.github.com>
Reviewed-by: @ngutman
* fix(infra/agents): session-routing guard for coalesced gateway restart continuations (#86742)
When two sessions issue gateway.restart with continuationMessage close
together, the scheduler Path B updatePendingRestartEmitHooks
unconditionally overwrote the existing pending hooks, silently dropping
the first sessions continuation and potentially routing the second
sessions continuation back to the first session (CWE-200 finding
flagged by aisle-research-bot on prior attempt #74443).
Add a session-routing guard: scheduleGatewaySigusr1Restart now accepts
an optional sessionKey and tracks the pending restarts owning session.
Coalesced callers from a different session are rejected at the hook-
update step and the new ScheduledRestart.emitHooksQueued: false field
surfaces the drop to the caller. The gateway tool propagates this as
continuationQueued: false in the tool response, matching #83370 narrow
report-only surface.
Same-session debounce/replace and legacy hookless callers behave the
same as before.
Refs #86742
* fix(infra): preserve queued restart continuation on forced bypass
* fix(infra): make forced restart hook preservation explicit
* fix(infra): guard restart continuation ownership before reschedule
* fix(infra): report hookless coalesced restarts accurately
* fix(infra): trust runtime session for restart sentinel routing
* fix(infra): preserve earlier restart reschedule semantics
* fix(agents): trust runtime session for update continuations
* fix(infra): preserve hookless forced restart continuations
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Co-authored-by: Peter Steinberger <steipete@gmail.com>
