Fix auth token localStorage key consistency

- Dashboard, viewer, and native viewer all now use guruconnect_token
- Fixed loadMachines() to include Authorization header

server/static/viewer.html

@@ -175,7 +175,7 @@
         }
 
         // Get viewer name from localStorage (same as dashboard)
-        const user = JSON.parse(localStorage.getItem('user') || 'null');
+        const user = JSON.parse(localStorage.getItem('guruconnect_user') || 'null');
         const viewerName = user?.name || user?.email || 'Technician';
 
         // State
@@ -597,7 +597,7 @@
 
         function connect() {
             const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-            const token = localStorage.getItem('authToken');
+            const token = localStorage.getItem('guruconnect_token');
             if (!token) {
                 updateStatus('error', 'Not authenticated');
                 document.getElementById('overlay-text').textContent = 'Not logged in. Please log in first.';