fix: android tv bottom sheet back button

lib/focus/dpad_navigator.dart

@@ -84,11 +84,32 @@ class SelectKeyUpSuppressor {
 /// the BACK key-up from propagating to the underlying screen.
 class BackKeyUpSuppressor {
   static bool _suppressBackUntilKeyUp = false;
+  static bool _closedViaBackKey = false;
 
+  /// Mark that a modal is being closed via back key press.
+  /// Call this before Navigator.pop() in back key handlers.
+  static void markClosedViaBackKey() {
+    _closedViaBackKey = true;
+  }
+
+  /// Request suppression of back key-up events.
+  /// Suppression is skipped if the modal was closed via back key
+  /// (since the key-up already triggered the close).
   static void suppressBackUntilKeyUp() {
+    if (_closedViaBackKey) {
+      _closedViaBackKey = false;
+      return;
+    }
     _suppressBackUntilKeyUp = true;
   }
 
+  /// Clear any pending suppression. Call when opening a new modal
+  /// to ensure stale suppression from previous closes doesn't affect it.
+  static void clearSuppression() {
+    _suppressBackUntilKeyUp = false;
+    _closedViaBackKey = false;
+  }
+
   static bool consumeIfSuppressed(KeyEvent event) {
     if (!_suppressBackUntilKeyUp) return false;
     if (event.logicalKey.isBackKey) {

lib/focus/key_event_utils.dart

@@ -66,6 +66,8 @@ KeyEventResult handleBackKeyAction(KeyEvent event, VoidCallback onBack) {
 
   if (event is KeyUpEvent) {
     BackKeyCoordinator.markHandled();
+    // Mark that we're closing via back key so suppressBackUntilKeyUp() knows to skip
+    BackKeyUpSuppressor.markClosedViaBackKey();
     onBack();
     return KeyEventResult.handled;
   }

lib/theme/mono_theme.dart

@@ -27,6 +27,8 @@ ThemeData monoTheme({required bool dark, bool oled = false}) {
           textMuted: const Color(0x99111111),
         );
 
+  final isDark = dark || oled;
+
   final buttonStyle = ButtonStyle(
     padding: const WidgetStatePropertyAll(EdgeInsets.symmetric(horizontal: 18, vertical: 14)),
     elevation: const WidgetStatePropertyAll(0),
@@ -35,8 +37,6 @@ ThemeData monoTheme({required bool dark, bool oled = false}) {
     shape: const WidgetStatePropertyAll(StadiumBorder()),
   );
 
-  final isDark = dark || oled;
-
   final base = ThemeData(
     useMaterial3: true,
     brightness: isDark ? Brightness.dark : Brightness.light,

lib/widgets/focusable_bottom_sheet.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 
 import '../focus/input_mode_tracker.dart';
 import '../focus/dpad_navigator.dart';
+import '../focus/key_event_utils.dart';
 
 /// A wrapper widget that provides autofocus functionality for bottom sheets.
 ///
@@ -29,6 +30,8 @@ class _FocusableBottomSheetState extends State<FocusableBottomSheet> {
   @override
   void initState() {
     super.initState();
+    // Clear any stale back key suppression from previous sheet closes
+    BackKeyUpSuppressor.clearSuppression();
     _requestInitialFocus();
   }
 
@@ -61,13 +64,12 @@ class _FocusableBottomSheetState extends State<FocusableBottomSheet> {
       canRequestFocus: false,
       skipTraversal: true,
       onKeyEvent: (node, event) {
+        // Handle select key suppression (for when sheet was opened via select key)
         if (SelectKeyUpSuppressor.consumeIfSuppressed(event)) {
           return KeyEventResult.handled;
         }
-        if (BackKeyUpSuppressor.consumeIfSuppressed(event)) {
-          return KeyEventResult.handled;
-        }
-        return KeyEventResult.ignored;
+        // Handle back key to close the bottom sheet
+        return handleBackKeyNavigation(context, event);
       },
       child: widget.child,
     );