Preserve pending input order across steering sections

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

ui/src/components/task-chat/transcript-adapter.test.ts

@@ -34,12 +34,25 @@ import type {
   TaskChatPlanDocumentItem,
   TaskChatTurnItem,
 } from "./task-chat-model";
+import { latestPendingRuntimeRequest } from "./task-chat-model";
 import { providerActivityPresentation } from "./task-chat-activity-presentation";
 import { nativeRunEventsToTranscript } from "../transcript/native-run-events";
 
 const TS = "2026-07-31T12:00:00.000Z";
 
 describe("runtime requests across steering sections", () => {
+  it("selects the newer request when an older pending permission crosses steering", () => {
+    const older: TranscriptEntry = { kind: "runtime_request", ts: TS, requestId: "older-permission",
+      requestKind: "permission_approval", turnId: "provider-turn", requestType: "permission", status: "pending",
+      prompt: "Earlier write", choices: [{ key: "decline", label: "Deny" }], fields: [] };
+    const newer: TranscriptEntry = { ...older, ts: "2026-07-31T12:00:02.000Z", requestId: "newer-permission", prompt: "Later write" };
+    const options = { runId: "run-steering", running: true };
+    const context = runtimeRequestSegmentContext([older, newer], options);
+    const tail = reconcileSegmentRuntimeRequests(transcriptToTaskChatItems([newer], options), [newer], context, true);
+    expect(tail.map(item => item.id)).toEqual(["run-steering:runtime-request:older-permission", "run-steering:runtime-request:newer-permission"]);
+    expect(latestPendingRuntimeRequest(tail)?.requestId).toBe("newer-permission");
+  });
+
   it.each(["pending", "resolved", "cancelled"] as const)("keeps one %s permission under whole-run authority", status => {
     const request: TranscriptEntry = { kind: "runtime_request", ts: TS, requestId: "permission-1",
       requestKind: "permission_approval", turnId: "provider-turn", requestType: "permission", status: "pending",

ui/src/components/task-chat/transcript-adapter.ts

@@ -606,12 +606,15 @@ export function reconcileSegmentRuntimeRequests(
     retained.add(item.id);
     return [state.item];
   });
+  const carried: TaskChatItem[] = [];
   if (carryPending) {
     for (const { item } of context.values()) {
-      if (item.status === "pending" && !retained.has(item.id)) result.push(item);
+      if (item.status === "pending" && !retained.has(item.id)) carried.push(item);
     }
   }
-  return result;
+  // A carried request predates this section. Keep newer requests last so the
+  // composer selects the latest input instead of reviving an older one.
+  return [...carried, ...result];
 }
 
 /**