fix(ui): 修正六屏顶栏与内容间距

lib/pages/discover/discover_view.dart

@@ -257,7 +257,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
             tooltip: l10n.search,
             onTap: logic.openSearch,
           ),
-          const SizedBox(width: 7),
+          const SizedBox(width: 8),
           Semantics(
             button: true,
             label: widget.signedIn ? l10n.myTab : l10n.logIn,
@@ -266,8 +266,8 @@ class _DiscoverPageState extends State<DiscoverPage> {
               customBorder: const CircleBorder(),
               onTap: widget.signedIn ? widget.onCoins : widget.onSignIn,
               child: Container(
-                width: 28,
-                height: 28,
+                width: 36,
+                height: 36,
                 decoration: BoxDecoration(
                   shape: BoxShape.circle,
                   gradient: const LinearGradient(
@@ -279,7 +279,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
                 child: const Icon(
                   Icons.person_rounded,
                   color: AppColors.onSurface,
-                  size: 15,
+                  size: 18,
                 ),
               ),
             ),
@@ -601,8 +601,8 @@ class _HeaderIcon extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return SizedBox(
-      width: 28,
-      height: 28,
+      width: 36,
+      height: 36,
       child: IconButton(
         tooltip: tooltip,
         onPressed: onTap,
@@ -611,7 +611,7 @@ class _HeaderIcon extends StatelessWidget {
           backgroundColor: const Color(0xFF2C2D33),
           foregroundColor: AppColors.onSurface,
         ),
-        icon: Icon(icon, size: 14),
+        icon: Icon(icon, size: 18),
       ),
     );
   }