Fix memory.ts old SQLite references

src/tools/memory.ts

@@ -1,4 +1,4 @@
-import { db } from '../memory/db.js';
+import { MemoryModel } from '../memory/db.js';
 
 export const saveMemoryTool = {
     type: 'function',
@@ -36,24 +36,27 @@ export const searchMemoryTool = {
     }
 };
 
-export function executeSaveMemory(content: string): string {
+export async function executeSaveMemory(content: string): Promise<string> {
     try {
-        const stmt = db.prepare('INSERT INTO memory (content, timestamp) VALUES (?, ?)');
         const now = new Date().toISOString();
-        stmt.run(content, now);
+        await MemoryModel.create({ content, timestamp: now });
         return `Successfully saved memory: ${content}`;
     } catch (e: any) {
         return `Failed to save memory: ${e.message}`;
     }
 }
 
-export function executeSearchMemory(query: string): string {
+export async function executeSearchMemory(query: string): Promise<string> {
     try {
-        // FTS5 MATCH format requires quotes for phrase matching
-        const stmt = db.prepare('SELECT content, timestamp FROM memory WHERE memory MATCH ? ORDER BY rank LIMIT 10');
-        // Simple safety: strip quotes from query
+        // Use MongoDB text search
         const safeQuery = query.replace(/"/g, '');
-        const rows = stmt.all(`"${safeQuery}"`) as any[];
+        const rows = await MemoryModel.find(
+            { $text: { $search: safeQuery } },
+            { score: { $meta: "textScore" } }
+        )
+            .sort({ score: { $meta: "textScore" } })
+            .limit(10)
+            .lean();
 
         if (rows.length === 0) {
             return `No memories found matching "${query}"`;