feat: 更新 IDataEngine 接口，添加批量操作、向量查找和聚合功能，重构数据访问方法

Author: hotlong

packages/core/src/contracts/data-engine.ts

@@ -1,38 +1,45 @@
-import { QueryAST } from '@objectstack/spec/data';
-import { DriverOptions } from '@objectstack/spec/system';
+import { 
+  DataEngineQueryOptions, 
+  DataEngineInsertOptions, 
+  DataEngineUpdateOptions, 
+  DataEngineDeleteOptions,
+  DataEngineAggregateOptions, 
+  DataEngineCountOptions,
+  DataEngineRequest // Added Request type for batch
+} from '@objectstack/spec/data';
 
 /**
  * IDataEngine - Standard Data Engine Interface
  * 
  * Abstract interface for data persistence capabilities.
  * Following the Dependency Inversion Principle - plugins depend on this interface,
  * not on concrete database implementations.
+ * 
+ * Aligned with 'src/data/data-engine.zod.ts' in @objectstack/spec.
  */
 
-export interface DataEngineFilter {
-  [key: string]: any;
-}
-
-export interface DataEngineQueryOptions {
-  /** Filter conditions */
-  filter?: DataEngineFilter;
-  /** Fields to select */
-  select?: string[];
-  /** Sort order */
-  sort?: Record<string, 1 | -1 | 'asc' | 'desc'>;
-  /** Limit number of results */
-  limit?: number;
-  /** Skip number of results */
-  skip?: number;
-  /** Maximum number of results */
-  top?: number;
-}
-
 export interface IDataEngine {
-  insert(objectName: string, data: any): Promise<any>;
   find(objectName: string, query?: DataEngineQueryOptions): Promise<any[]>;
-  update(objectName: string, id: any, data: any): Promise<any>;
-  delete(objectName: string, id: any): Promise<boolean>;
+  findOne(objectName: string, query?: DataEngineQueryOptions): Promise<any>;
+  insert(objectName: string, data: any | any[], options?: DataEngineInsertOptions): Promise<any>;
+  update(objectName: string, data: any, options?: DataEngineUpdateOptions): Promise<any>;
+  delete(objectName: string, options?: DataEngineDeleteOptions): Promise<any>;
+  count(objectName: string, query?: DataEngineCountOptions): Promise<number>;
+  aggregate(objectName: string, query: DataEngineAggregateOptions): Promise<any[]>;
+  
+  /**
+   * Vector Search (AI/RAG)
+   */
+  vectorFind?(objectName: string, vector: number[], options?: { filter?: any, limit?: number, select?: string[], threshold?: number }): Promise<any[]>;
+
+  /**
+   * Batch Operations (Transactional)
+   */
+  batch?(requests: DataEngineRequest[], options?: { transaction?: boolean }): Promise<any[]>;
+
+   * Execute raw command (Escape hatch)
+   */
+  execute?(command: any, options?: Record<string, any>): Promise<any>;
 }
 
 export interface DriverInterface {