feat: 支持运行中 steer command

src/selftest/fake-codex-app-server.ts

@@ -7,6 +7,7 @@ if (process.env.AGENTRUN_FAKE_CODEX_START_FILE) appendFileSync(process.env.AGENT
 let threadCounter = 0;
 let turnCounter = 0;
 let observedThreadModel = false;
+let activeSteerTurn: { id: string; completed: boolean; timer: NodeJS.Timeout | null } | null = null;
 
 for await (const line of rl) {
   const trimmed = String(line).trim();
@@ -148,6 +149,18 @@ for await (const line of rl) {
       }, 50);
       continue;
     }
+    if (mode === "steer-waits") {
+      turnCounter += 1;
+      const turn = { id: `turn_selftest_${turnCounter}`, status: "running" };
+      notify("turn/started", { turn });
+      activeSteerTurn = {
+        id: turn.id,
+        completed: false,
+        timer: setTimeout(() => completeActiveSteerTurn("timeout-no-steer"), 2_000),
+      };
+      respond(message.id, { turn });
+      continue;
+    }
     if (mode === "noisy-reasoning-events") {
       turnCounter += 1;
       const turn = { id: `turn_selftest_${turnCounter}`, status: "completed" };
@@ -176,6 +189,18 @@ for await (const line of rl) {
     respond(message.id, { turn });
     continue;
   }
+  if (message.method === "turn/steer") {
+    if (mode !== "steer-waits" || !activeSteerTurn) {
+      respond(message.id, null, { code: -32000, message: "no active fake turn for steer" });
+      continue;
+    }
+    const text = steerText(message.params?.input);
+    notify("item/agentMessage/delta", { itemId: "msg_steer", delta: `steered:${text}` });
+    notify("item/completed", { item: { id: "msg_steer", type: "agentMessage", text: `steered:${text}` } });
+    respond(message.id, { accepted: true });
+    setTimeout(() => completeActiveSteerTurn("steer-applied"), 20);
+    continue;
+  }
   respond(message.id, null, { code: -32601, message: `unsupported fake method ${message.method ?? "unknown"}` });
 }
 
@@ -187,3 +212,20 @@ function respond(id: number | undefined, result: unknown, error?: unknown): void
 function notify(method: string, params: unknown): void {
   process.stdout.write(`${JSON.stringify({ method, params })}\n`);
 }
+
+function completeActiveSteerTurn(reason: string): void {
+  if (!activeSteerTurn || activeSteerTurn.completed) return;
+  activeSteerTurn.completed = true;
+  if (activeSteerTurn.timer) clearTimeout(activeSteerTurn.timer);
+  const turn = { id: activeSteerTurn.id, status: "completed", reason };
+  notify("turn/completed", { turn });
+}
+
+function steerText(input: unknown): string {
+  if (!Array.isArray(input)) return "";
+  return input.flatMap((item) => {
+    if (typeof item !== "object" || item === null || Array.isArray(item)) return [];
+    const text = (item as Record<string, unknown>).text;
+    return typeof text === "string" ? [text] : [];
+  }).join("");
+}