refactor(cursor): lazy-load better-sqlite3 and remove unused type definitions

server/modules/providers/list/cursor/cursor.provider.ts

@@ -1,5 +1,4 @@
 import crypto from 'node:crypto';
-import { createRequire } from 'node:module';
 import os from 'node:os';
 import path from 'node:path';
 
@@ -11,22 +10,9 @@ import type { FetchHistoryOptions, FetchHistoryResult, NormalizedMessage } from
 import { createNormalizedMessage, generateMessageId, readObjectRecord } from '@/shared/utils.js';
 
 const PROVIDER = 'cursor';
-const nodeRequire = createRequire(import.meta.url);
 
 type RawProviderMessage = Record<string, any>;
 
-type BetterSqliteDatabase = {
-  prepare(sql: string): {
-    all(): CursorDbBlob[];
-  };
-  close(): void;
-};
-
-type BetterSqliteConstructor = new (
-  filename: string,
-  options: { readonly: boolean; fileMustExist: boolean },
-) => BetterSqliteDatabase;
-
 type CursorDbBlob = {
   rowid: number;
   id: string;
@@ -61,7 +47,8 @@ export class CursorProvider extends AbstractProvider {
    * order. Cursor history is stored as content-addressed blobs rather than JSONL.
    */
   private async loadCursorBlobs(sessionId: string, projectPath: string): Promise<CursorMessageBlob[]> {
-    const Database = nodeRequire('better-sqlite3') as BetterSqliteConstructor;
+    // Lazy-import better-sqlite3 so the module doesn't fail if it's unavailable
+    const { default: Database } = await import('better-sqlite3');
 
     const cwdId = crypto.createHash('md5').update(projectPath || process.cwd()).digest('hex');
     const storeDbPath = path.join(os.homedir(), '.cursor', 'chats', cwdId, sessionId, 'store.db');
@@ -69,7 +56,7 @@ export class CursorProvider extends AbstractProvider {
     const db = new Database(storeDbPath, { readonly: true, fileMustExist: true });
 
     try {
-      const allBlobs = db.prepare('SELECT rowid, id, data FROM blobs').all();
+      const allBlobs = db.prepare<[], CursorDbBlob>('SELECT rowid, id, data FROM blobs').all();
 
       const blobMap = new Map<string, CursorDbBlob>();
       const parentRefs = new Map<string, string[]>();