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/Controllers/Auth/LoginController.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace App\Modules\Core\Controllers\Auth;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Auth;
+use Inertia\Inertia;
+use Illuminate\Validation\ValidationException;
+
+class LoginController extends Controller
+{
+    /**
+     * Display the login view.
+     */
+    public function show()
+    {
+        $centralDomains = config('tenancy.central_domains', []);
+
+        // [Hack] Demo 環境特殊規則
+        $demoPort = config('tenancy.demo_tenant_port');
+        if ((!$demoPort || request()->getPort() != $demoPort) && in_array(request()->getHost(), $centralDomains)) {
+            return Inertia::render('Landlord/Auth/Login');
+        }
+
+        return Inertia::render('Auth/Login');
+    }
+
+    /**
+     * Handle an incoming authentication request.
+     */
+    public function store(Request $request)
+    {
+        $request->validate([
+            'username' => ['required', 'string'],
+            'password' => ['required', 'string'],
+        ], [
+            'username.required' => '請輸入帳號',
+            'password.required' => '請輸入密碼',
+        ]);
+
+        $credentials = $request->only('username', 'password');
+
+        if (Auth::attempt($credentials, $request->boolean('remember'))) {
+            $request->session()->regenerate();
+
+            $centralDomains = config('tenancy.central_domains', []);
+            $centralDomains = config('tenancy.central_domains', []);
+            // [Hack] Demo 環境特殊規則
+            $demoPort = config('tenancy.demo_tenant_port');
+            if ((!$demoPort || $request->getPort() != $demoPort) && in_array($request->getHost(), $centralDomains)) {
+                return redirect()->intended(route('landlord.dashboard'));
+            }
+
+            return redirect()->intended(route('dashboard'));
+        }
+
+        throw ValidationException::withMessages([
+            'username' => '帳號或密碼錯誤。',
+        ]);
+    }
+
+    /**
+     * Destroy an authenticated session.
+     */
+    public function destroy(Request $request)
+    {
+        Auth::guard('web')->logout();
+
+        $request->session()->invalidate();
+
+        $request->session()->regenerateToken();
+
+        return redirect('/');
+    }
+}