fix: 修复 ESM 模块导入路径，添加 .js 后缀兼容 Node.js ESM 加载

- 所有内部模块导入添加 .js 后缀
- types.ts 添加 __types 导出标记
- 确保运行时模块能被正确加载

ts/src/runtime/core/graph_memory/graph_database.ts

@@ -2,7 +2,7 @@ import Database from 'better-sqlite3';
 import type {
   Entity, Relation, RecallParams, CommitParams, PurgeParams,
   RecallResult, CommitResult, PurgeResult, MemoryStats
-} from './types';
+} from './types.js';
 
 export class GraphDatabase {
   private db: Database.Database;

ts/src/runtime/core/graph_memory/index.ts

@@ -1,3 +1,3 @@
-export * from './types';
+export * from './types.js';
-export * from './graph_database';
+export * from './graph_database.js';
-export { MemoryService } from './memory_service';
+export { MemoryService } from './memory_service.js';

ts/src/runtime/core/graph_memory/memory_service.ts

@@ -1,5 +1,5 @@
-import { GraphDatabase } from './graph_database';
+import { GraphDatabase } from './graph_database.js';
-import { TaskNodeStore } from './task_node_store';
+import { TaskNodeStore } from './task_node_store.js';
 import * as fs from 'fs';
 import * as path from 'path';
 import type {
@@ -8,7 +8,7 @@ import type {
   ContextRewriteParams, ContextRewriteResult,
   WorkingMemoryChainParams, WorkingMemoryChainResult,
   TaskNodeCreateParams, TaskNodeChainResult
-} from './types';
+} from './types.js';
 
 export class MemoryService {
   private db: GraphDatabase;

ts/src/runtime/core/graph_memory/task_node_store.ts

@@ -1,7 +1,7 @@
 import Database from 'better-sqlite3';
 import * as fs from 'fs';
 import * as path from 'path';
-import type { TaskNodeData } from './types';
+import type { TaskNodeData } from './types.js';
 
 export { TaskNodeData as TaskNode };
 

ts/src/runtime/core/graph_memory/types.ts

@@ -7,6 +7,8 @@ export interface Entity {
   updatedAt: Date;
 }
 
+export const __types = true;
+
 export type RelationStatus = 'active' | 'deleted' | 'archived' | 'superseded';
 
 export interface Relation {