fix(tv): host automatic multiline input in the Android IME

Android TV's docked keyboard handles multiline editors natively, so
`automatic` no longer diverts them to the Flutter overlay there. Only
Apple TV keeps the overlay for multiline input — its modal fullscreen
system keyboard cannot edit multiline text. Surfaces that want the
overlay for editing ergonomics (mpv config, connection editor, dialog
text areas) already pin flutterOverlay explicitly.

lib/focus/focusable_text_field.dart

@@ -12,9 +12,10 @@ import 'key_event_utils.dart';
 import 'owned_focus_node_binding.dart';
 
 enum TvTextInputPresentation {
-  /// Use the native platform keyboard for single-line input on every TV and
+  /// Use the native platform keyboard wherever it can host the field: always
-  /// the Flutter overlay for multiline input, whose newline/caret handling
+  /// on Android TV (its docked IME handles multiline input), and for
-  /// the TV IMEs do not cover well.
+  /// single-line input on Apple TV, whose modal fullscreen keyboard cannot
+  /// edit multiline text — that falls back to the Flutter overlay.
   automatic,
 
   /// Always use the platform text input implementation.
@@ -27,7 +28,8 @@ enum TvTextInputPresentation {
 bool _usesTvKeyboard({required TvTextInputPresentation presentation, TextInputType? keyboardType, int? maxLines}) {
   if (!PlatformDetector.isTV()) return false;
   return switch (presentation) {
-    TvTextInputPresentation.automatic => _isMultilineTextInput(keyboardType: keyboardType, maxLines: maxLines),
+    TvTextInputPresentation.automatic =>
+      PlatformDetector.isAppleTV() && _isMultilineTextInput(keyboardType: keyboardType, maxLines: maxLines),
     TvTextInputPresentation.platform => false,
     TvTextInputPresentation.flutterOverlay => true,
   };

lib/screens/settings/add_jellyfin_screen.dart

@@ -499,9 +499,9 @@ class _AddJellyfinScreenState extends State<AddJellyfinScreen> with AsyncFormSta
       FocusableTextFormField(
         controller: _urlController,
         focusNode: _urlFocus,
-        // Native on every TV: `automatic` would route this wrap-to-4-lines
+        // Native on every TV: on Apple TV `automatic` would route this
-        // field to the Flutter overlay, but it is logically single-line URL
+        // wrap-to-4-lines field to the Flutter overlay, but it is logically
-        // input and the platform IME handles it (#1051, #1079).
+        // single-line URL input the system keyboard handles (#1051, #1079).
         tvTextInputPresentation: TvTextInputPresentation.platform,
         autofocus: true,
         tvTextInputAutoOpenBehavior: deferredUrlFieldAutoOpen,

test/widgets/focusable_text_field_test.dart

@@ -849,6 +849,37 @@ void main() {
     expect(find.byKey(const Key('tv_virtual_keyboard_panel')), findsNothing);
   });
 
+  testWidgets('Android TV automatic multiline input uses the platform field', (tester) async {
+    TvDetectionService.debugSetAppleTVOverride(null);
+    await TvDetectionService.getInstance(forceTv: true);
+    TvDetectionService.setForceTVSync(true);
+    final controller = TextEditingController();
+    final fieldFocusNode = FocusNode(debugLabel: 'notes_field');
+    addTearDown(controller.dispose);
+    addTearDown(fieldFocusNode.dispose);
+
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: FocusableTextField(
+            controller: controller,
+            focusNode: fieldFocusNode,
+            keyboardType: TextInputType.multiline,
+            maxLines: 4,
+          ),
+        ),
+      ),
+    );
+
+    fieldFocusNode.requestFocus();
+    await tester.pumpAndSettle();
+
+    // Unlike Apple TV's modal fullscreen keyboard, the docked Android IME
+    // hosts multiline input natively — no Flutter overlay.
+    expect(tester.widget<TextField>(find.byType(TextField)).readOnly, isFalse);
+    expect(find.byKey(const Key('tv_virtual_keyboard_panel')), findsNothing);
+  });
+
   testWidgets('Android TV after-first-focus skips initial auto-open and opens on refocus', (tester) async {
     TvDetectionService.debugSetAppleTVOverride(null);
     await TvDetectionService.getInstance(forceTv: true);