[FEAT] 實作角色權限分類、租戶角控管理與介面多語系優化

1. [FEAT] 權限劃分為「系統層級」與「客戶層級」，並在後端強制過濾跨權限分配。
2. [FEAT] 整合選單權限至主選單層級 (基本設定、權限設定)，簡化角色管理 UI。
3. [STYLE] 側邊欄優化：補齊多語系翻譯，並為基本設定子選單增加視覺圖示。
4. [REFACTOR] 更新 RoleSeeder，將 tenant-admin 重新分類為客戶層級角色。

resources/views/admin/companies/index.blade.php

@@ -62,16 +62,16 @@
     <div class="luxury-card rounded-3xl p-8 animate-luxury-in" style="animation-delay: 300ms">
         <div class="flex flex-col md:flex-row md:items-center justify-between mb-8 gap-6">
             <form action="{{ route('admin.permission.companies.index') }}" method="GET" class="relative group">
-                <span class="absolute inset-y-0 left-0 flex items-center pl-4 pointer-events-none">
+                <span class="absolute inset-y-0 left-0 flex items-center pl-4 pointer-events-none z-10">
                     <svg class="h-4 w-4 text-slate-400 group-focus-within:text-cyan-500 transition-colors"
-                        viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round"
+                        viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
                         stroke-linejoin="round">
                         <circle cx="11" cy="11" r="8"></circle>
                         <line x1="21" y1="21" x2="16.65" y2="16.65"></line>
                     </svg>
                 </span>
                 <input type="text" name="search" value="{{ request('search') }}"
-                    class="py-3 pl-12 pr-6 block w-64 border-slate-200 dark:border-slate-700 bg-white dark:bg-slate-800 rounded-2xl text-sm font-bold text-slate-700 dark:text-slate-200 placeholder-slate-400 dark:placeholder-slate-500 focus:ring-4 focus:ring-cyan-500/10 focus:border-cyan-500 transition-all outline-none"
+                    class="py-2.5 pl-12 pr-6 block w-64 luxury-input"
                     placeholder="{{ __('Search customers...') }}">
                 <input type="hidden" name="per_page" value="{{ request('per_page', 10) }}">
             </form>
@@ -254,12 +254,10 @@
                 </div>
 
                 <form
-                    :action="editing ? '{{ route('admin.permission.companies.index') }}/' + currentCompany.id : '{{ route('admin.permission.companies.store') }}'"
+                    :action="editing ? '{{ url('admin/permission/companies') }}/' + currentCompany.id : '{{ route('admin.permission.companies.store') }}'"
                     method="POST" class="space-y-6">
                     @csrf
-                    <template x-if="editing">
-                        @method('PUT')
-                    </template>
+                    <input type="hidden" name="_method" :value="editing ? 'PUT' : 'POST'">
 
                     <!-- Profile Section -->
                     <div class="space-y-6">