fix: enhance error handling for tag saving process and improve CSRF token retrieval

extensions/Servers/Proxmox/views/components/layout.blade.php

@@ -1277,7 +1277,8 @@
                                     method: 'POST',
                                     headers: {
                                         'Content-Type': 'application/json',
-                                        'X-CSRF-TOKEN': document.querySelector('meta[name=csrf-token]').content
+                                        'Accept': 'application/json',
+                                        'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]')?.getAttribute('content') || ''
                                     },
                                     body: JSON.stringify({
                                         tag1: this.tag1.trim(),
@@ -1288,7 +1289,14 @@
                                         tag3color: this.tag3color
                                     })
                                 })
-                                .then(r => r.json())
+                                .then(r => {
+                                    if (!r.ok) {
+                                        return r.text().then(text => {
+                                            throw new Error(`HTTP ${r.status}: ${text.substring(0, 100)}`);
+                                        });
+                                    }
+                                    return r.json();
+                                })
                                 .then(data => {
                                     this.saving = false;
                                     if (data.success) {
@@ -1302,8 +1310,9 @@
                                 })
                                 .catch(err => {
                                     this.saving = false;
-                                    this.message = 'Error saving tags';
+                                    this.message = 'Error: ' + err.message;
                                     this.messageType = 'error';
+                                    console.error('Tag save error:', err);
                                 });
                             }
                         }