feat: Implement file upload and management system with database integration

update-admin-username.js

@@ -0,0 +1,28 @@
+import Database from "better-sqlite3";
+
+const db = new Database("./data/database.sqlite");
+
+console.log("🔄 Updating admin username...");
+
+try {
+    // Update admin username from email to simple "admin"
+    const result = db.prepare('UPDATE users SET username = ? WHERE username = ?').run('admin', 'admin@localhost.com');
+    
+    if (result.changes > 0) {
+        console.log('✅ Admin username updated to "admin"');
+    } else {
+        console.log('ℹ️  No admin user found with email "admin@localhost.com"');
+    }
+    
+    // Show current users
+    const users = db.prepare("SELECT name, username, role FROM users").all();
+    console.log("\nCurrent users:");
+    users.forEach(user => {
+        console.log(`  - ${user.name} (${user.role}): username="${user.username}"`);
+    });
+    
+} catch (error) {
+    console.error("❌ Error:", error.message);
+} finally {
+    db.close();
+}