.

backend/api/index.php

@@ -420,6 +420,7 @@ function handleNodes($method, $id, $db) {
             break;
         case 'DELETE':
             if ($id) {
+                $db->prepare("DELETE FROM node_notes WHERE node_id = ?")->execute([$id]);
                 $db->prepare("DELETE FROM network_nodes WHERE id = ?")->execute([$id]);
                 echo json_encode(['deleted' => true]);
             }

backend/config/database.php

@@ -41,8 +41,7 @@ function migrate($db) {
     try {
         $db->exec("CREATE TABLE IF NOT EXISTS node_notes (
             node_id INT PRIMARY KEY,
-            notes TEXT DEFAULT '',
-            FOREIGN KEY (node_id) REFERENCES network_nodes(id) ON DELETE CASCADE
+            notes TEXT DEFAULT ''
         )");
     } catch (Exception $e) {
     }

docker/init.sql

@@ -73,6 +73,5 @@ INSERT IGNORE INTO teams (name, color) VALUES
 -- Ensure notes column exists and grant ALTER privilege
 CREATE TABLE IF NOT EXISTS node_notes (
     node_id INT PRIMARY KEY,
-    notes TEXT DEFAULT '',
-    FOREIGN KEY (node_id) REFERENCES network_nodes(id) ON DELETE CASCADE
+    notes TEXT DEFAULT ''
 );