feat: migrate runtime backend to node server

src/services/questDirector.ts

@@ -10,6 +10,7 @@ import type {
   QuestLogEntry,
 } from '../types';
 import type {QuestGenerationContext} from './aiTypes';
+import { requestJson } from './apiClient';
 import {requestChatMessageContent} from './llmClient';
 import {parseJsonResponseText} from './llmParsers';
 import {buildQuestIntentPrompt, QUEST_INTENT_SYSTEM_PROMPT} from './questPrompt';
@@ -204,6 +205,22 @@ export async function generateQuestForNpcEncounter(params: {
 
   const fallbackIntent = buildFallbackQuestIntent(request);
 
+  if (typeof window !== 'undefined') {
+    try {
+      return await requestJson<QuestLogEntry | null>(
+        '/api/runtime/quests/generate',
+        {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(params),
+        },
+        '任务生成失败',
+      );
+    } catch (error) {
+      console.warn('[QuestDirector] backend quest generation failed, falling back', error);
+    }
+  }
+
   try {
     const content = await requestChatMessageContent(
       QUEST_INTENT_SYSTEM_PROMPT,
@@ -237,4 +254,3 @@ export async function generateQuestForNpcEncounter(params: {
     );
   }
 }
-