Improve portable launch, forge persistence, and operator auth UX.

Persist build extra_files for Build Manager history, print dashboard login on every start, add libp2p for Mesh P2P forge, defer WebSocket until login, and split devrun.bat from LAUNCH.bat with USB deck auto-detection.

server/web/src/context/WebSocketProvider.tsx

@@ -40,14 +40,25 @@ export function WebSocketProvider({ children }: { children: React.ReactNode }) {
       reconnectTimer.current = null;
     }
 
+    const token = getStoredAuth();
+    if (!token) {
+      const existing = wsRef.current;
+      if (existing) {
+        existing.onclose = null;
+        existing.close();
+        wsRef.current = null;
+      }
+      setIsConnected(false);
+      return;
+    }
+
     const existing = wsRef.current;
     if (existing && (existing.readyState === WebSocket.OPEN || existing.readyState === WebSocket.CONNECTING)) {
       existing.close();
     }
 
     const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-    const token = getStoredAuth();
-    const wsUrl = `${protocol}//${window.location.host}/ws/dashboard${token ? `?token=${encodeURIComponent(token)}` : ''}`;
+    const wsUrl = `${protocol}//${window.location.host}/ws/dashboard?token=${encodeURIComponent(token)}`;
     const ws = new WebSocket(wsUrl);
     wsRef.current = ws;
 
@@ -57,6 +68,7 @@ export function WebSocketProvider({ children }: { children: React.ReactNode }) {
       if (unmounted.current) return;
       setIsConnected(false);
       if (reconnectTimer.current) clearTimeout(reconnectTimer.current);
+      if (!getStoredAuth()) return;
       reconnectTimer.current = setTimeout(connect, 3000);
     };
 
@@ -201,8 +213,11 @@ export function WebSocketProvider({ children }: { children: React.ReactNode }) {
   useEffect(() => {
     unmounted.current = false;
     connect();
+    const onAuthChange = () => connect();
+    window.addEventListener('aetherforge-auth', onAuthChange);
     return () => {
       unmounted.current = true;
+      window.removeEventListener('aetherforge-auth', onAuthChange);
       if (reconnectTimer.current) clearTimeout(reconnectTimer.current);
       const ws = wsRef.current;
       if (ws) { ws.onclose = null; ws.close(); }