Add multi-player and remote bridge support

src/player/onboarding/player-onboarding-form.script.html

@@ -39,8 +39,14 @@
           return screens;
         });
     }
-    if (!deviceId) { setMessage("Missing device id. Scan the QR code from the player screen again."); return; }
-    try { window.localStorage.setItem(deviceKey, deviceId); } catch (_error) {}
+    try {
+      if (!deviceId) {
+        deviceId = window.localStorage.getItem(deviceKey) || "";
+      }
+      if (deviceId) {
+        window.localStorage.setItem(deviceKey, deviceId);
+      }
+    } catch (_error) {}
     loadScreens().then(function () {
       try {
         var storedClientName = window.localStorage.getItem(clientNameKey) || "";
@@ -58,10 +64,14 @@
       if (!clientName) { setMessage("Client name is required."); return; }
       if (!screenSlug) { setMessage("Screen is required."); return; }
       setMessage("Saving client...");
+      var payload = { clientName: clientName, screenSlug: screenSlug };
+      if (deviceId) {
+        payload.deviceId = deviceId;
+      }
       fetch("/api/onboarding", {
         method: "POST",
         headers: { "Content-Type": "application/json", Accept: "application/json" },
-        body: JSON.stringify({ deviceId: deviceId, clientName: clientName, screenSlug: screenSlug })
+        body: JSON.stringify(payload)
       })
          .then(function (response) {
            if (response.ok) {