fix(connection): Happ TV connect works on Apple TV too (one API for both)

Correction: check.happ.su/sendtv is a single API serving both Android TV and
Apple TV, not Android-only. Re-enable the TV connect widget for Apple TV
(gate on androidTV || appleTV again) and make the code input flexible again
(inputMode text, alphanumeric) since the code isn't guaranteed numeric.

src/components/connection/InstallationGuide.tsx

@@ -150,11 +150,11 @@ export default function InstallationGuide({
   );
 
   const userIsOnTv = detectedPlatform === 'androidTV' || detectedPlatform === 'appleTV';
-  // Happ's TV quick-connect (check.happ.su/sendtv, 5-digit code) is an ANDROID TV
-  // -only API. Apple TV uses a different mechanism (tv.happ.su temporary code), so
-  // the block must NOT show there — it would POST to the wrong endpoint.
-  const isAndroidTvLayout =
-    (activePlatformKey || availablePlatforms[0]) === 'androidTV' && !userIsOnTv;
+  // Happ's TV quick-connect (check.happ.su/sendtv) is ONE API serving BOTH
+  // Android TV and Apple TV — show the widget on either.
+  const selectedPlatform = activePlatformKey || availablePlatforms[0];
+  const isTvLayout =
+    (selectedPlatform === 'androidTV' || selectedPlatform === 'appleTV') && !userIsOnTv;
 
   const currentPlatformKey = activePlatformKey || availablePlatforms[0];
   const currentPlatformData = currentPlatformKey
@@ -194,11 +194,11 @@ export default function InstallationGuide({
   const blockType = appConfig.uiConfig?.installationGuidesBlockType || 'cards';
   const Renderer = RENDERERS[blockType] || CardsBlock;
 
-  // For the Happ Android TV app, inject the TV connect widget into a step as
+  // For the Happ TV app (Android TV / Apple TV), inject the TV connect widget as
   // customNode so it renders THROUGH the active block style (cards/timeline/
   // accordion/minimal) instead of as separate clashing cards that break it.
   const showTvConnect = Boolean(
-    selectedApp && isAndroidTvLayout && isHappApp(selectedApp) && appConfig.subscriptionUrl,
+    selectedApp && isTvLayout && isHappApp(selectedApp) && appConfig.subscriptionUrl,
   );
   let renderBlocks: RenderBlock[] = selectedApp?.blocks ?? [];
   if (selectedApp && showTvConnect && appConfig.subscriptionUrl) {

src/components/connection/TvQuickConnect.tsx

@@ -213,9 +213,9 @@ export default function TvQuickConnect({ subscriptionUrl, isLight }: Props) {
           maxLength={5}
           value={code}
           onChange={(e) => setCode(e.target.value.toUpperCase().replace(/[^A-Z0-9]/g, ''))}
-          placeholder="12345"
+          placeholder="A1B2C"
           autoComplete="one-time-code"
-          inputMode="numeric"
+          inputMode="text"
           className={inputClass}
         />
         <button