feat: 統一各模組分頁組件佈局並新增系統設定功能相關檔案

database/migrations/tenant/2026_02_25_151106_create_system_settings_table.php

@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('system_settings', function (Blueprint $table) {
+            $table->id();
+            $table->string('group')->index()->comment('設定分組');
+            $table->string('key')->unique()->comment('設定鍵名');
+            $table->text('value')->nullable()->comment('設定值');
+            $table->string('type')->default('string')->comment('資料型別');
+            $table->string('description')->nullable()->comment('功能說明');
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('system_settings');
+    }
+};