Auto-refresh dashboard and show client info

- Support tab auto-refreshes every 3 seconds
- Shows client hostname under code when connected
- Changes Cancel button to Join button when connected
- Added joinSession placeholder function

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/static/dashboard.html

@@ -452,12 +452,18 @@
                     const created = new Date(code.created_at).toLocaleString();
                     const statusClass = code.status === "pending" ? "badge-warning" :
                                        code.status === "connected" ? "badge-success" : "badge-muted";
+                    const clientInfo = code.status === "connected" && code.client_name
+                        ? '<div style="font-size: 12px; color: hsl(var(--muted-foreground));">' + code.client_name + '</div>'
+                        : '';
+                    const actionBtn = code.status === "connected"
+                        ? '<button class="btn btn-primary" onclick="joinSession(\'' + code.session_id + '\')">Join</button>'
+                        : '<button class="btn btn-outline" onclick="cancelCode(\'' + code.code + '\')">Cancel</button>';
                     return '<tr>' +
-                        '<td><strong>' + code.code + '</strong></td>' +
+                        '<td><strong>' + code.code + '</strong>' + clientInfo + '</td>' +
                         '<td><span class="badge ' + statusClass + '">' + code.status + '</span></td>' +
                         '<td>' + created + '</td>' +
                         '<td>' + (code.created_by || "Unknown") + '</td>' +
-                        '<td><button class="btn btn-outline" onclick="cancelCode(\'' + code.code + '\')">Cancel</button></td>' +
+                        '<td>' + actionBtn + '</td>' +
                     '</tr>';
                 }).join("");
             } catch (err) {
@@ -475,7 +481,14 @@
             }
         }
 
+        function joinSession(sessionId) {
+            // TODO: Open viewer in new window
+            alert("Viewer not yet implemented.\\n\\nSession ID: " + sessionId + "\\n\\nWebSocket: wss://connect.azcomputerguru.com/ws/viewer?session_id=" + sessionId);
+        }
+
+        // Initial load and auto-refresh every 3 seconds
         loadSessions();
+        setInterval(loadSessions, 3000);
 
         // Load connected machines (Access tab)
         let machines = [];