fix: modern 主题补全默认视图组件样式（侧边栏 widget/标签云/搜索框/profile/表格/付费提示等），修复切换后错位；header 补搜索框

themes/modern/views/partials/header.blade.php

@@ -6,6 +6,9 @@
             <a href="{{ route('archives') }}" class="{{ request()->routeIs('archives*') ? 'active' : '' }}">归档</a>
             <a href="{{ route('tags') }}" class="{{ request()->routeIs('tags*') ? 'active' : '' }}">标签</a>
             <a href="{{ route('links') }}" class="{{ request()->routeIs('links') ? 'active' : '' }}">友链</a>
+            <form class="m-search" action="{{ route('search') }}" method="get">
+                <input type="search" name="q" placeholder="搜索..." value="{{ request('q', request('keyword', '')) }}">
+            </form>
             @auth
                 <a href="{{ route('profile') }}">{{ auth()->user()->name }}</a>
                 <form action="{{ route('logout') }}" method="post" class="inline-form">
@@ -14,6 +17,7 @@
                 </form>
             @else
                 <a href="{{ route('login') }}">登录</a>
+                <a href="{{ route('register') }}">注册</a>
             @endauth
         </nav>
     </div>