feat: adapt codex app-server protocol updates

tests/fixtures/codex-app-server-runtime.mjs

@@ -4,6 +4,8 @@ import readline from "node:readline";
 
 const rl = readline.createInterface({ input: process.stdin });
 const received = [];
+let injectedItems = [];
+let overloadedTurnStartEmitted = false;
 
 function send(message) {
   process.stdout.write(`${JSON.stringify(message)}\n`);
@@ -42,6 +44,42 @@ rl.on("line", (line) => {
     return;
   }
 
+  if (message.method === "thread/read") {
+    send({
+      id: message.id,
+      result: {
+        thread: {
+          id: message.params?.threadId,
+          name: "源线程",
+        },
+        items: [
+          {
+            type: "message",
+            role: "assistant",
+            content: [
+              {
+                type: "output_text",
+                text: "源线程最近结论：优先使用 app-server 协议。",
+              },
+            ],
+          },
+        ],
+      },
+    });
+    return;
+  }
+
+  if (message.method === "thread/inject_items") {
+    injectedItems = message.params?.items ?? [];
+    send({
+      id: message.id,
+      result: {
+        injected: injectedItems.length,
+      },
+    });
+    return;
+  }
+
   if (message.method === "thread/start") {
     send({
       id: message.id,
@@ -56,6 +94,20 @@ rl.on("line", (line) => {
   }
 
   if (message.method === "turn/start") {
+    if (
+      process.env.BOSS_CODEX_APP_SERVER_FIXTURE_OVERLOAD_ON_TURN_START === "1" &&
+      !overloadedTurnStartEmitted
+    ) {
+      overloadedTurnStartEmitted = true;
+      send({
+        id: message.id,
+        error: {
+          code: -32001,
+          message: "Server overloaded; retry later.",
+        },
+      });
+      return;
+    }
     const text = message.params?.input?.find?.((item) => item?.type === "text")?.text ?? "";
     send({
       id: message.id,
@@ -69,12 +121,70 @@ rl.on("line", (line) => {
     if (process.env.BOSS_CODEX_APP_SERVER_FIXTURE_EXIT_AFTER_TURN_START === "1") {
       process.exit(0);
     }
+    if (process.env.BOSS_CODEX_APP_SERVER_FIXTURE_EMIT_PROGRESS === "1") {
+      send({
+        method: "turn/plan/updated",
+        params: {
+          threadId: message.params?.threadId,
+          turnId: "turn-fixture",
+          plan: [
+            { text: "读取 Codex 官方 app-server 协议", status: "completed" },
+            { text: "执行 targeted/full test", status: "in_progress" },
+          ],
+        },
+      });
+      send({
+        method: "turn/diff/updated",
+        params: {
+          threadId: message.params?.threadId,
+          turnId: "turn-fixture",
+          diff: {
+            changedFiles: 3,
+            additions: 181,
+            deletions: 52,
+          },
+        },
+      });
+      send({
+        method: "item/completed",
+        params: {
+          threadId: message.params?.threadId,
+          turnId: "turn-fixture",
+          item: {
+            type: "fileChange",
+            id: "file-change-1",
+            changes: [
+              { path: "docs/protocol-snapshots/codex-app-server/codex-app-server-protocol-0.135.0.json" },
+            ],
+          },
+        },
+      });
+      send({
+        method: "thread/started",
+        params: {
+          thread: {
+            id: "subagent-thread",
+            source: {
+              subAgent: {
+                thread_spawn: {
+                  agent_nickname: "Mendel",
+                  agent_role: "explorer",
+                },
+              },
+            },
+          },
+        },
+      });
+    }
     send({
       method: "item/agentMessage/delta",
       params: {
         threadId: message.params?.threadId,
         turnId: "turn-fixture",
-        delta: `APP_SERVER_REPLY:${text}`,
+        delta:
+          process.env.BOSS_CODEX_APP_SERVER_FIXTURE_INTER_THREAD === "1"
+            ? `INTER_THREAD_INJECTED:${JSON.stringify(injectedItems)}`
+            : `APP_SERVER_REPLY:${text}`,
       },
     });
     send({
@@ -91,6 +201,42 @@ rl.on("line", (line) => {
     return;
   }
 
+  if (message.method === "turn/steer") {
+    const text = message.params?.input?.find?.((item) => item?.type === "text")?.text ?? "";
+    send({
+      id: message.id,
+      result: {
+        turn: {
+          id: message.params?.expectedTurnId,
+          threadId: message.params?.threadId,
+        },
+      },
+    });
+    send({
+      method: "item/agentMessage/delta",
+      params: {
+        threadId: message.params?.threadId,
+        turnId: message.params?.expectedTurnId,
+        delta:
+          process.env.BOSS_CODEX_APP_SERVER_FIXTURE_STEER === "1"
+            ? `STEERED:${text}`
+            : `APP_SERVER_STEERED:${text}`,
+      },
+    });
+    send({
+      method: "turn/completed",
+      params: {
+        threadId: message.params?.threadId,
+        turn: {
+          id: message.params?.expectedTurnId,
+          status: "completed",
+        },
+      },
+    });
+    process.stderr.write(`${JSON.stringify({ received })}\n`);
+    return;
+  }
+
   send({
     id: message.id,
     error: {