Mail in Search, Pick up where you left off on Home (evening first), Cast/AirPlay buttons

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/cast.js

@@ -0,0 +1,12 @@
+'use strict';
+// Send what is playing to a TV or speaker. Safari/iOS use the AirPlay picker; Chrome and Edge use the browser's own cast picker (Chromecast and
+// compatible TVs). The TV fetches the stream itself, so this works best where it can reach the server the same way this device does.
+const castOk = el => !!el && (!!(el.remote && el.remote.prompt) || typeof el.webkitShowPlaybackTargetPicker === 'function');
+async function castTo(el) {
+  if (!el) return toast('Start something playing first');
+  try {
+    if (el.remote && el.remote.prompt) await el.remote.prompt();
+    else if (typeof el.webkitShowPlaybackTargetPicker === 'function') el.webkitShowPlaybackTargetPicker();
+    else toast('This browser cannot send to a TV or speaker. Try Safari (AirPlay) or Chrome (Cast).');
+  } catch (e) { if (e && e.name !== 'NotAllowedError' && e.name !== 'AbortError') toast(e.name === 'NotSupportedError' || e.name === 'InvalidStateError' ? 'No TV or speaker found on this network' : (e.message || 'Could not cast')); }
+}