chore: 完善模組化架構遷移與修復前端顯示錯誤

- 修正所有模組 Controller 的 Model 引用路徑 (App\Modules\...)
- 更新 ProductionOrder 與 ProductionOrderItem 模型結構以符合新版邏輯
- 修復 resources/js/utils/format.ts 在處理空值時導致 toLocaleString 崩潰的問題
- 清除全域路徑與 Controller 遷移殘留檔案

app/Modules/Core/Models/Role.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Modules\Core\Models;
+
+use Spatie\Permission\Models\Role as SpatieRole;
+use Spatie\Activitylog\Traits\LogsActivity;
+use Spatie\Activitylog\LogOptions;
+
+class Role extends SpatieRole
+{
+    use LogsActivity;
+
+    public function getActivitylogOptions(): LogOptions
+    {
+        return LogOptions::defaults()
+            ->logAll()
+            ->logOnlyDirty()
+            ->dontSubmitEmptyLogs();
+    }
+}

app/Modules/Core/Models/Tenant.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Modules\Core\Models;
+
+use Stancl\Tenancy\Database\Models\Tenant as BaseTenant;
+use Stancl\Tenancy\Contracts\TenantWithDatabase;
+use Stancl\Tenancy\Database\Concerns\HasDatabase;
+use Stancl\Tenancy\Database\Concerns\HasDomains;
+
+/**
+ * 租戶 Model
+ * 
+ * 代表 ERP 系統中的每一個客戶公司 (如：小小冰室、酒水客戶等)
+ * 
+ * 自訂屬性 (存在 data JSON 欄位中，可透過 $tenant->name 存取):
+ * - name: 租戶名稱 (如: 小小冰室)
+ * - email: 聯絡信箱
+ * - is_active: 是否啟用
+ */
+class Tenant extends BaseTenant implements TenantWithDatabase
+{
+    use HasDatabase, HasDomains;
+
+    /**
+     * 定義獨立欄位 (非 data JSON)
+     * 只有 id 是獨立欄位，其他自訂屬性都存在 data JSON 中
+     */
+    public static function getCustomColumns(): array
+    {
+        return [
+            'id',
+        ];
+    }
+}

app/Modules/Core/Models/User.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Modules\Core\Models;
+
+// use Illuminate\Contracts\Auth\MustVerifyEmail;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Foundation\Auth\User as Authenticatable;
+use Illuminate\Notifications\Notifiable;
+use Spatie\Permission\Traits\HasRoles;
+use Spatie\Activitylog\Traits\LogsActivity;
+use Spatie\Activitylog\LogOptions;
+
+class User extends Authenticatable
+{
+    /** @use HasFactory<\Database\Factories\UserFactory> */
+    use HasFactory, Notifiable, HasRoles, LogsActivity;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var list<string>
+     */
+    protected $fillable = [
+        'name',
+        'email',
+        'username',
+        'password',
+    ];
+
+    /**
+     * The attributes that should be hidden for serialization.
+     *
+     * @var list<string>
+     */
+    protected $hidden = [
+        'password',
+        'remember_token',
+    ];
+
+    /**
+     * Get the attributes that should be cast.
+     *
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'email_verified_at' => 'datetime',
+            'password' => 'hashed',
+        ];
+    }
+
+    public function getActivitylogOptions(): LogOptions
+    {
+        return LogOptions::defaults()
+            ->logAll()
+            ->logOnlyDirty()
+            ->dontSubmitEmptyLogs();
+    }
+
+    public function tapActivity(\Spatie\Activitylog\Contracts\Activity $activity, string $eventName)
+    {
+        $activity->properties = $activity->properties->merge([
+            'snapshot' => [
+                'name' => $this->name,
+                'username' => $this->username,
+            ]
+        ]);
+    }
+}