imrpove network map

docker/init.sql

@@ -49,6 +49,21 @@ CREATE TABLE IF NOT EXISTS network_links (
     FOREIGN KEY (target_id) REFERENCES network_nodes(id) ON DELETE CASCADE
 );
 
+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
+);
+
 INSERT IGNORE INTO teams (name, color) VALUES
     ('Blue Team', '#0d6efd'),
     ('Red Team', '#dc3545'),