[FIX] 遷移機台授權為獨立模組：修復變數命名、補齊多語系並強化多租戶數據隔離

database/migrations/2026_03_30_144031_add_is_admin_to_roles_table.php

@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('roles', function (Blueprint $table) {
+            $table->boolean('is_admin')->default(false)->after('is_system');
+        });
+
+        // 資料遷移：將所有租戶中名稱為「管理員」的角色標示為 is_admin = true
+        // 這樣既有的授權篩選才不會斷掉
+        DB::table('roles')
+            ->whereNotNull('company_id')
+            ->where('name', '管理員')
+            ->update(['is_admin' => true]);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('roles', function (Blueprint $table) {
+            $table->dropColumn('is_admin');
+        });
+    }
+};

database/migrations/2026_03_30_145939_move_is_admin_from_roles_to_users.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // 1. 從 roles 移除 is_admin
+        if (Schema::hasColumn('roles', 'is_admin')) {
+            Schema::table('roles', function (Blueprint $table) {
+                $table->dropColumn('is_admin');
+            });
+        }
+
+        // 2. 在 users 新增 is_admin
+        Schema::table('users', function (Blueprint $table) {
+            $table->boolean('is_admin')->default(false)->after('status');
+        });
+
+        // 3. 資料遷移：針對現有租戶，將每一家公司最先建立的帳號（或是目前名稱為管理員角色的人）標記為 is_admin = true
+        // 取得所有租戶公司 ID
+        $companyIds = DB::table('companies')->pluck('id');
+
+        foreach ($companyIds as $companyId) {
+            // 優先找該公司 ID 最小的 user (通常是第一個建立的)
+            $userId = DB::table('users')
+                ->where('company_id', $companyId)
+                ->orderBy('id', 'asc')
+                ->value('id');
+
+            if ($userId) {
+                DB::table('users')->where('id', $userId)->update(['is_admin' => true]);
+            }
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('is_admin');
+        });
+
+        Schema::table('roles', function (Blueprint $table) {
+            $table->boolean('is_admin')->default(false)->after('is_system');
+        });
+    }
+};

database/migrations/2026_03_30_150252_fix_user_is_admin_flag_for_deleted_users.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // 1. 先將所有已刪除帳號的 is_admin 全部歸零，確保不會標記在「看不到的人」身上
+        DB::table('users')->whereNotNull('deleted_at')->update(['is_admin' => false]);
+
+        // 2. 針對每一家公司，重新撈取「目前還存活 (deleted_at is null)」的最早建立帳號
+        $companyIds = DB::table('companies')->pluck('id');
+
+        foreach ($companyIds as $companyId) {
+            // 找該公司中，目前 ID 最小且「尚未被刪除」的 User
+            $userId = DB::table('users')
+                ->where('company_id', $companyId)
+                ->whereNull('deleted_at')
+                ->orderBy('id', 'asc')
+                ->value('id');
+
+            if ($userId) {
+                // 將該帳號設為管理員，並確保該公司其它生存帳號如果是 true 的先清掉 (一對一標記)
+                DB::table('users')
+                    ->where('company_id', $companyId)
+                    ->where('id', '!=', $userId)
+                    ->update(['is_admin' => false]);
+
+                DB::table('users')->where('id', $userId)->update(['is_admin' => true]);
+            }
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // 基本上這是資料修正，回復也不太有意義
+    }
+};