feat(nav): 底部导航改为首页推荐追剧我的

lib/core/widgets/subpage_header.dart

@@ -120,6 +120,7 @@ class AppSubpageHeader extends StatelessWidget {
     this.actions,
     this.onBack,
     this.dark = false,
+    this.showBack = true,
   });
 
   final String title;
@@ -128,6 +129,7 @@ class AppSubpageHeader extends StatelessWidget {
   final Widget? actions;
   final VoidCallback? onBack;
   final bool dark;
+  final bool showBack;
 
   @override
   Widget build(BuildContext context) {
@@ -140,8 +142,14 @@ class AppSubpageHeader extends StatelessWidget {
         padding: const EdgeInsets.symmetric(horizontal: _horizontal),
         child: Row(
           children: [
-            AppSubpageBackButton(backKey: backKey, dark: dark, onBack: onBack),
-            const SizedBox(width: _backGap),
+            if (showBack) ...[
+              AppSubpageBackButton(
+                backKey: backKey,
+                dark: dark,
+                onBack: onBack,
+              ),
+              const SizedBox(width: _backGap),
+            ],
             Expanded(
               child: Column(
                 mainAxisAlignment: MainAxisAlignment.center,