transform admin panel with comprehensive professional UI

- migrate from SQLite to PostgreSQL with Drizzle ORM
- implement comprehensive AdminLayout with expandable sidebar navigation
- create professional dashboard with real-time charts and metrics
- add advanced monitoring, reporting, and export functionality
- fix menu alignment and remove non-existent pages
- eliminate duplicate headers and improve UI consistency
- add Tailwind CSS v3 for professional styling
- expand database schema from 6 to 15 tables
- implement role-based access control and API key management
- create comprehensive settings, monitoring, and system info pages

pages/api/admin/sources/[id].ts

@@ -1,6 +1,6 @@
 import type { NextApiRequest, NextApiResponse } from 'next'
-import sqlite3 from 'sqlite3'
-import path from 'path'
+import { db, schema } from '../../../../lib/db/connection'
+import { eq } from 'drizzle-orm'
 
 export default async function handler(
   req: NextApiRequest,
@@ -17,33 +17,21 @@ export default async function handler(
     return res.status(400).json({ error: 'ID and status are required' })
   }
 
-  const dbPath = path.join(process.cwd(), 'database', 'antihoax.db')
-  const db = new sqlite3.Database(dbPath)
-
   try {
-    await new Promise<void>((resolve, reject) => {
-      const query = `
-        UPDATE sources 
-        SET status = ?, risk_level = ?, rejection_reason = ?, updated_at = CURRENT_TIMESTAMP
-        WHERE id = ?
-      `
-      
-      db.run(
-        query,
-        [status, risk_level || 0, rejection_reason || null, id],
-        function(err) {
-          if (err) reject(err)
-          else resolve()
-        }
-      )
-    })
+    await db
+      .update(schema.sources)
+      .set({
+        status: status,
+        riskLevel: risk_level || 0,
+        rejectionReason: rejection_reason || null,
+        updatedAt: new Date()
+      })
+      .where(eq(schema.sources.id, parseInt(id as string)))
 
     return res.status(200).json({ success: true })
 
   } catch (error) {
     console.error('Database error:', error)
     return res.status(500).json({ error: 'Internal server error' })
-  } finally {
-    db.close()
   }
 }