fix(runner): carry steering identity into Hermes parent

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

packages/paperclip-runner/src/live/runnerd-codex-transport.test.ts

@@ -2050,6 +2050,12 @@ it("restores provider identity and streamed text from a canonical delta", () =>
     .toMatchObject({ threadId: "root-thread", turnId: "provider-turn", delta: "Reading Gmail", itemId: "message-1" });
 });
 
+it("keeps a flat steering acknowledgement recognizable for deduplication", () => {
+  const receipt = { kind: "steering_acknowledgement", correlationId: "steer-1", status: "accepted" };
+  expect(rehydrateRunnerdItemNotification(receipt, "opened-thread", "provider-turn"))
+    .toEqual({ ...receipt, threadId: "opened-thread", turnId: "provider-turn" });
+});
+
 it("rehydrates a canonical agent item for the strict Codex facade", () => {
   expect(
     rehydrateRunnerdItemNotification(

packages/paperclip-runner/src/live/runnerd-codex-transport.ts

@@ -1886,6 +1886,11 @@ export function rehydrateRunnerdItemNotification(
   activeTurnId: string,
 ): Record<string, unknown> {
   const rawItem = record(rawParams.item);
+  if (rawParams.kind === "steering_acknowledgement" && Object.keys(rawItem).length === 0) {
+    // Preserve runnerd's flat receipt so the driver recognizes the transport
+    // echo. The acknowledged request emits the user-visible bound item once.
+    return { ...rawParams, threadId: openedThreadId, turnId: activeTurnId };
+  }
   const channel = rawItem.channel ?? rawParams.channel;
   const providerPhase = rawItem.phase ?? rawParams.providerPhase;
   const phase =
@@ -3663,7 +3668,9 @@ class DurablePrpCodexTransport implements CodexAppServerTransport {
         "turn.steer",
         {
           text,
-          turnId: this.#durableTurnId,
+          // ACPX owns the requested provider turn, which can differ from the
+          // durable PRP turn that scopes control-plane and semantic events.
+          turnId: this.options.provider === "acpx" ? expectedTurnId : this.#durableTurnId,
           providerTurnId: expectedTurnId,
           ...(params.mode === "follow_up" ? { mode: "follow_up" } : {}),
           ...(correlationId ? { correlationId } : {}),