Wait for signoff fixture runs before stage decisions

tests/e2e/signoff-policy.spec.ts

@@ -270,6 +270,29 @@ async function getIssueRunLockState(board: APIRequestContext, issueId: string):
   };
 }
 
+async function waitForFixtureRun(
+  board: APIRequestContext,
+  agentId: string,
+  issueId: string,
+  runId: string,
+) {
+  // Negative authorization cases deliberately invoke a non-participant. Leave
+  // their API rejection intact instead of waiting for a run they cannot own.
+  if ((await getIssueRunLockState(board, issueId)).assigneeAgentId !== agentId) return;
+  const waitBudgetMs = wakeupWaitBudgetMs();
+  const deadline = Date.now() + waitBudgetMs;
+  let status: string | null = null;
+  do {
+    const run = await fetchVerifiedRun(board, runId, agentId, issueId);
+    expect(run, "Fixture run must belong to the acting agent and issue").not.toBeNull();
+    status = run!.status;
+    if (status === "succeeded") return;
+    expect(["queued", "running"], `Fixture run ${runId} ended as ${status}`).toContain(status);
+    await new Promise((resolve) => setTimeout(resolve, WAKEUP_POLL_INTERVAL_MS));
+  } while (Date.now() < deadline);
+  throw new Error(`Fixture run ${runId} did not succeed within ${waitBudgetMs}ms (last status: ${status})`);
+}
+
 async function retryAgentPatchWithCurrentLockOnConflict(
   board: APIRequestContext,
   agent: AgentAuth,
@@ -325,6 +348,9 @@ async function agentPatch(
   }: { maxAttempts?: number; backoffMs?: number; maxBackoffMs?: number } = {},
 ) {
   const runId = await invokeHeartbeat(board, agent.agentId, issueId);
+  // The fixture process only prints "done". Let its startup and cleanup settle
+  // before a simulated decision reassigns the issue and cancels that process.
+  await waitForFixtureRun(board, agent.agentId, issueId, runId);
   const patchWith = (patchRunId: string) =>
     agent.request.patch(`${BASE_URL}/api/issues/${issueId}`, {
       headers: { "X-Paperclip-Run-Id": patchRunId },
@@ -353,6 +379,7 @@ async function agentCheckoutAndPatch(
   patchData: Record<string, unknown>,
 ) {
   const runId = await invokeHeartbeat(board, agent.agentId, issueId);
+  await waitForFixtureRun(board, agent.agentId, issueId, runId);
   const directPatchRes = await agent.request.patch(`${BASE_URL}/api/issues/${issueId}`, {
     headers: { "X-Paperclip-Run-Id": runId },
     data: patchData,