Close DDD refactor and remove generated asset proxy

src/services/ai.ts

@@ -5,6 +5,7 @@ import type {
 } from '../../packages/shared/src/contracts/runtime';
 import { unwrapApiResponse } from '../../packages/shared/src/http';
 import { createSceneHostileNpcsFromEncounters } from '../data/hostileNpcs';
+import { hasMixedNarrativeLanguage } from './narrativeLanguage';
 import {
   buildEncounterFromSceneNpc,
   getScenePresetById,
@@ -134,7 +135,7 @@ type MergeableCustomWorldRoleEntry = {
 };
 
 const CUSTOM_WORLD_SCENE_IMAGE_API_BASE_URL =
-  ENV.VITE_SCENE_IMAGE_PROXY_BASE_URL || '/api/custom-world/scene-image';
+  ENV.VITE_SCENE_IMAGE_PROXY_BASE_URL || '/api/runtime/custom-world/scene-image';
 const CUSTOM_WORLD_JSON_REPAIR_SYSTEM_PROMPT = `你是 JSON 修复器。
 你会收到一段本应为单个 JSON 对象的文本。
 你的唯一任务是把它修复成能被 JSON.parse 直接解析的单个 JSON 对象。