fix 500

backend/config/database.php

@@ -10,6 +10,24 @@ function getDbConnection() {
             PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
             PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
         ]);
+        migrate($db);
     }
     return $db;
 }
+
+function migrate($db) {
+    $db->exec("CREATE TABLE IF NOT EXISTS network_shapes (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        label VARCHAR(255) NOT NULL DEFAULT '',
+        shape_type ENUM('rectangle','ellipse','zone') DEFAULT 'rectangle',
+        pos_x FLOAT DEFAULT 0,
+        pos_y FLOAT DEFAULT 0,
+        width FLOAT DEFAULT 200,
+        height FLOAT DEFAULT 150,
+        color VARCHAR(7) DEFAULT '#1e3a5f',
+        border_color VARCHAR(7) DEFAULT '#3b82f6',
+        opacity FLOAT DEFAULT 0.15,
+        z_index INT DEFAULT 0,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    )");
+}