DUNGEONS-34: keep host screen awake while streaming

Co-authored-by: multica-agent <github@multica.ai>

frontend/i18n/locales/en.json

@@ -173,5 +173,17 @@
     "OverconstrainedError": "This camera source is unavailable. Try the front camera.",
     "clipboard": "Couldn’t copy automatically. Select and copy the address above.",
     "fullscreen": "Fullscreen isn’t available in this browser."
+  },
+  "wake": {
+    "section": "Host screen",
+    "title": "Do not turn off the host",
+    "hint": "Keep this device’s screen on while hosting. Leave Webka visible. Saved in this browser; uses more battery.",
+    "off": "Screen keep-awake is off or hosting has not started.",
+    "waiting": "Return to Webka to keep the screen awake.",
+    "requesting": "Requesting screen keep-awake…",
+    "active": "Screen stays on while hosting.",
+    "unavailable": "The browser or power-saving settings released or denied keep-awake. Keep this page visible and try again.",
+    "unsupported": "Screen keep-awake is unavailable here. Use HTTPS and a supported browser, or adjust your device’s auto-lock setting.",
+    "retry": "Try keep-awake again"
   }
 }