feat(app): implement Product Scan review flow, dynamic batch expiry picker, custom PDFs, PO relationships, and aligned card layouts

lib/features/auth/auth_provider.dart

@@ -13,6 +13,23 @@ class AuthNotifier extends StateNotifier<bool> {
     final token = prefs.getString('auth_token');
     if (token != null) {
       state = true;
+      try {
+        final apiClient = _ref.read(apiClientProvider);
+        final response = await apiClient.client.get('/auth/me');
+        if (response.data is Map && response.data['data'] is Map) {
+          final profile = response.data['data']['profile'];
+          if (profile != null) {
+            await prefs.setString('nama_toko', profile['namaToko'] ?? '');
+            await prefs.setString('kode_toko', profile['kodeToko'] ?? '');
+          }
+        }
+      } catch (e) {
+        // If unauthorized, perform clean logout
+        if (e.toString().contains('401') || e.toString().contains('Unauthorized')) {
+          await logout();
+          return false;
+        }
+      }
       return true;
     }
     state = false;
@@ -35,12 +52,17 @@ class AuthNotifier extends StateNotifier<bool> {
       }
       
       final token = response.data['data']['token'];
+      final profile = response.data['data']['profile'];
       if (token == null) {
         throw Exception("Token otentikasi tidak ditemukan dalam respon");
       }
       
       final prefs = await SharedPreferences.getInstance();
       await prefs.setString('auth_token', token);
+      if (profile != null) {
+        await prefs.setString('nama_toko', profile['namaToko'] ?? '');
+        await prefs.setString('kode_toko', profile['kodeToko'] ?? '');
+      }
       
       state = true;
     } catch (e) {
@@ -52,6 +74,8 @@ class AuthNotifier extends StateNotifier<bool> {
   Future<void> logout() async {
     final prefs = await SharedPreferences.getInstance();
     await prefs.remove('auth_token');
+    await prefs.remove('nama_toko');
+    await prefs.remove('kode_toko');
     state = false;
   }
 }

lib/features/auth/login_screen.dart

@@ -56,7 +56,10 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
       body: SafeArea(
         child: Center(
           child: SingleChildScrollView(
-            padding: const EdgeInsets.all(32.0),
+            padding: const EdgeInsets.symmetric(
+              horizontal: AppConfig.spaceXXL,
+              vertical: AppConfig.spaceXL,
+            ),
             child: Form(
               key: _formKey,
               child: Column(
@@ -73,19 +76,19 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
                       color: AppConfig.primaryColor
                     ),
                   ),
-                  const SizedBox(height: 24),
+                  const SizedBox(height: AppConfig.spaceXL),
                   Text(
                     'Selamat Datang Kembali',
                     style: AppConfig.h1,
                     textAlign: TextAlign.center,
                   ),
-                  const SizedBox(height: 8),
+                  const SizedBox(height: AppConfig.spaceSmall),
                   Text(
                     'Masuk untuk menyinkronkan dokumen Anda ke server pusat',
                     style: AppConfig.bodyMedium,
                     textAlign: TextAlign.center,
                   ),
-                  const SizedBox(height: 48),
+                  const SizedBox(height: AppConfig.spaceXXL * 1.5),
                   TextFormField(
                     controller: _idController,
                     decoration: const InputDecoration(
@@ -99,7 +102,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
                       return null;
                     },
                   ),
-                  const SizedBox(height: 16),
+                  const SizedBox(height: AppConfig.spaceLarge),
                   TextFormField(
                     controller: _passwordController,
                     obscureText: true,
@@ -117,7 +120,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
                       return null;
                     },
                   ),
-                  const SizedBox(height: 32),
+                  const SizedBox(height: AppConfig.spaceXXL),
                   SizedBox(
                     height: 56,
                     child: ElevatedButton(
@@ -131,7 +134,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
                           : const Text('Masuk'),
                     ),
                   ),
-                const SizedBox(height: 24),
+                const SizedBox(height: AppConfig.spaceXL),
                 Text(
                   'Hubungi admin pusat untuk mendapatkan kredensial akun.',
                   style: AppConfig.bodySmall,