fix: 保留 Code Agent 最终回复全文

src/backend/codex-stdio.ts

@@ -77,6 +77,14 @@ interface CompletedAssistantMessage {
   text: string;
 }
 
+interface FinalAssistantMessage {
+  itemId: string | null;
+  text: string;
+  messageIndex: number | null;
+  messageCount: number | null;
+  source: string;
+}
+
 interface AssistantDeltaProgressItem {
   itemId: string | null;
   text: string;
@@ -604,7 +612,9 @@ async function runCodexStdioTurnWithSession(options: CodexStdioTurnOptions, sess
   if (pendingInterrupt) await pendingInterrupt.catch(() => undefined);
   if (terminal.status !== "completed") emitEvents(await session.close());
   emitEvents(flushAssistantDeltaProgress(assistantDeltaProgress));
-  if (completedAssistantMessages.length === 0) emitEvents(assistantMessageEventsForTurn(assistantText, terminal.status === "completed"));
+  const finalAssistant = terminal.status === "completed" ? finalAssistantMessageForTurn(completedAssistantMessages, assistantText) : null;
+  if (finalAssistant) emitEvent(assistantFinalResponseEvent(finalAssistant));
+  else if (completedAssistantMessages.length === 0) emitEvents(assistantMessageEventsForTurn(assistantText, false));
   emitEvents(suppressedNotificationEvents(suppressedNotifications));
   emitEvent({ type: "terminal_status", payload: { terminalStatus: terminal.status, failureKind: terminal.failureKind, message: terminal.message } });
   await liveEventWrite;
@@ -883,6 +893,42 @@ function assistantMessageEventsForTurn(assistantDeltaText: string, completed: bo
   }];
 }
 
+function finalAssistantMessageForTurn(completedMessages: CompletedAssistantMessage[], assistantDeltaText: string): FinalAssistantMessage | null {
+  const latestCompleted = completedMessages.at(-1) ?? null;
+  if (latestCompleted && latestCompleted.text.trim().length > 0) {
+    return {
+      itemId: latestCompleted.itemId,
+      text: latestCompleted.text,
+      messageIndex: completedMessages.length,
+      messageCount: completedMessages.length,
+      source: "completed-agent-message-final",
+    };
+  }
+  if (assistantDeltaText.trim().length === 0) return null;
+  return {
+    itemId: null,
+    text: assistantDeltaText,
+    messageIndex: 1,
+    messageCount: 1,
+    source: "agent-message-delta-final",
+  };
+}
+
+function assistantFinalResponseEvent(message: FinalAssistantMessage): BackendEvent {
+  return {
+    type: "assistant_message",
+    payload: {
+      text: message.text,
+      itemId: message.itemId,
+      source: message.source,
+      messageIndex: message.messageIndex,
+      messageCount: message.messageCount,
+      replyAuthority: true,
+      final: true,
+    },
+  };
+}
+
 function createAssistantDeltaProgressState(): AssistantDeltaProgressState {
   return new Map();
 }