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/run-dispatch/domain/policy.test.ts

@@ -436,6 +436,28 @@ describe("decideQueuedRunStaleness", () => {
     expect(decideQueuedRunStaleness(facts, NOW)).toEqual({ stale: false });
   });
 
+  describe("completed onboarding handoff report", () => {
+    const reportingFacts = (): QueuedRunFacts => ({
+      ...baseStalenessFacts(), issueStatus: "done", wakeReason: "issue_children_completed",
+      isCompletedOnboardingHandoffWake: true,
+    });
+
+    it("allows a verified child-completion report without reopening the parent", () => {
+      expect(decideQueuedRunStaleness(reportingFacts(), NOW)).toEqual({ stale: false });
+    });
+
+    it.each([
+      { overrides: { isCompletedOnboardingHandoffWake: false }, errorCode: "issue_terminal_status" },
+      { overrides: { wakeReason: "issue_assigned" }, errorCode: "issue_terminal_status" },
+      { overrides: { issueStatus: "cancelled" }, errorCode: "issue_terminal_status" },
+      { overrides: { issueAssigneeAgentId: "agent-2" }, errorCode: "issue_assignee_changed" },
+      { overrides: { retryReasonKind: "max_turn_continuation" as const }, errorCode: "issue_not_in_progress" },
+    ])("preserves $errorCode guard with $overrides", ({ overrides, errorCode }) => {
+      expect(decideQueuedRunStaleness({ ...reportingFacts(), ...overrides }, NOW))
+        .toMatchObject({ stale: true, errorCode });
+    });
+  });
+
   it("allows a non-assignee workspace-busy retry to bypass the ownership check", () => {
     const facts: QueuedRunFacts = {
       ...baseStalenessFacts(),

server/src/modules/run-dispatch/domain/policy.ts

@@ -151,6 +151,8 @@ export type QueuedRunFacts = {
 
   resumeIntent: boolean;
   wakeCommentIdPresent: boolean;
+  /** Verified from current company-scoped parent/child state immediately before dispatch. */
+  isCompletedOnboardingHandoffWake?: boolean;
 
   /** True when the run's wake or retry reason asks for a continuation the parked-summary check must inspect. */
   continuationParkApplies: boolean;
@@ -609,7 +611,10 @@ export function decideQueuedRunStaleness(
   const statusOutcome = decideIssueStatus({
     status: facts.issueStatus,
     requiresInProgress,
-    terminalBypass: facts.resumeIntent || facts.wakeCommentIdPresent,
+    terminalBypass: facts.resumeIntent || facts.wakeCommentIdPresent || (
+      facts.isCompletedOnboardingHandoffWake === true &&
+      facts.wakeReason === "issue_children_completed" && facts.issueStatus === "done"
+    ),
   });
   if (statusOutcome === "terminal") {
     return {