feat: return completed handoffs to Agent Chat (#14408)

Return completed Agent Chat handoffs through a durable outbox and scope each generated update to its supplied tasks. Add recovery, browser delivery, result access, and calibrated quality coverage.

Validated with two consecutive ten-case Claude/Codex campaigns, all CI checks, and a 5/5 review.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/modules/wake-queue/application/use-cases.ts

@@ -356,8 +356,13 @@ async function promoteDeferredWake(
   // after completion; it cannot revive a cancelled task. Other stale
   // continuations cannot revive assignee execution. Cancel before claiming promotion so
   // the compare-and-set still sees the deferred wake.
+  const onboardingResultReport = currentIssue.status === "done" && currentIssue.originKind === "onboarding_first_task" &&
+    await ports.transaction.isCompletedOnboardingHandoffWake({ companyId: run.companyId, issueId: currentIssue.id,
+      agentId: workingCandidate.agentId, reason: workingCandidate.wakeReason ?? workingCandidate.reason,
+      contextSnapshot: workingCandidate.deferredContextSeed });
   if (
     !shouldReopen &&
+    !onboardingResultReport &&
     (currentIssue.status === "done" || currentIssue.status === "cancelled") &&
     workingCandidate.agentId === currentIssue.assigneeAgentId
   ) {