add auth, format

lib/core/utils/extensions.dart

@@ -423,16 +423,14 @@ extension BuildContextExtensions on BuildContext {
 
   /// Navigate to route
   Future<T?> push<T>(Widget page) {
-    return Navigator.of(this).push<T>(
-      MaterialPageRoute(builder: (_) => page),
-    );
+    return Navigator.of(this).push<T>(MaterialPageRoute(builder: (_) => page));
   }
 
   /// Navigate and replace current route
   Future<T?> pushReplacement<T>(Widget page) {
-    return Navigator.of(this).pushReplacement<T, void>(
-      MaterialPageRoute(builder: (_) => page),
-    );
+    return Navigator.of(
+      this,
+    ).pushReplacement<T, void>(MaterialPageRoute(builder: (_) => page));
   }
 
   /// Pop current route

lib/core/utils/formatters.dart

@@ -313,15 +313,21 @@ class TextFormatter {
   }
 
   /// Truncate text with ellipsis
-  static String truncate(String text, int maxLength, {String ellipsis = '...'}) {
+  static String truncate(
+    String text,
+    int maxLength, {
+    String ellipsis = '...',
+  }) {
     if (text.length <= maxLength) return text;
     return text.substring(0, maxLength - ellipsis.length) + ellipsis;
   }
 
   /// Remove diacritics from Vietnamese text
   static String removeDiacritics(String text) {
-    const withDiacritics = 'àáạảãâầấậẩẫăằắặẳẵèéẹẻẽêềếệểễìíịỉĩòóọỏõôồốộổỗơờớợởỡùúụủũưừứựửữỳýỵỷỹđ';
-    const withoutDiacritics = 'aaaaaaaaaaaaaaaaaeeeeeeeeeeeiiiiioooooooooooooooooouuuuuuuuuuuyyyyyd';
+    const withDiacritics =
+        'àáạảãâầấậẩẫăằắặẳẵèéẹẻẽêềếệểễìíịỉĩòóọỏõôồốộổỗơờớợởỡùúụủũưừứựửữỳýỵỷỹđ';
+    const withoutDiacritics =
+        'aaaaaaaaaaaaaaaaaeeeeeeeeeeeiiiiioooooooooooooooooouuuuuuuuuuuyyyyyd';
 
     var result = text.toLowerCase();
     for (var i = 0; i < withDiacritics.length; i++) {

lib/core/utils/l10n_extensions.dart

@@ -241,8 +241,11 @@ class L10nHelper {
   /// final pointsText = L10nHelper.formatPoints(context, 100);
   /// // Returns: "+100 điểm" (Vietnamese) or "+100 points" (English)
   /// ```
-  static String formatPoints(BuildContext context, int points,
-      {bool showSign = true}) {
+  static String formatPoints(
+    BuildContext context,
+    int points, {
+    bool showSign = true,
+  }) {
     if (showSign && points > 0) {
       return context.l10n.earnedPoints(points);
     } else if (showSign && points < 0) {

lib/core/utils/qr_generator.dart

@@ -66,9 +66,7 @@ class QRGenerator {
       ),
       padding: const EdgeInsets.all(16),
       gapless: true,
-      embeddedImageStyle: const QrEmbeddedImageStyle(
-        size: Size(48, 48),
-      ),
+      embeddedImageStyle: const QrEmbeddedImageStyle(size: Size(48, 48)),
     );
   }
 
@@ -189,9 +187,7 @@ class QRGenerator {
       embeddedImage: embeddedImage is AssetImage
           ? (embeddedImage as AssetImage).assetName as ImageProvider
           : null,
-      embeddedImageStyle: QrEmbeddedImageStyle(
-        size: embeddedImageSize,
-      ),
+      embeddedImageStyle: QrEmbeddedImageStyle(size: embeddedImageSize),
     );
   }
 
@@ -203,18 +199,12 @@ class QRGenerator {
       if (data.contains(':')) {
         final parts = data.split(':');
         if (parts.length == 2) {
-          return {
-            'type': parts[0].toUpperCase(),
-            'value': parts[1],
-          };
+          return {'type': parts[0].toUpperCase(), 'value': parts[1]};
         }
       }
 
       // If no type prefix, return as generic data
-      return {
-        'type': 'GENERIC',
-        'value': data,
-      };
+      return {'type': 'GENERIC', 'value': data};
     } catch (e) {
       return null;
     }

lib/core/utils/validators.dart

@@ -244,9 +244,7 @@ class Validators {
     }
 
     if (double.tryParse(value) == null) {
-      return fieldName != null
-          ? '$fieldName phải là số'
-          : 'Giá trị phải là số';
+      return fieldName != null ? '$fieldName phải là số' : 'Giá trị phải là số';
     }
 
     return null;
@@ -351,7 +349,8 @@ class Validators {
       );
 
       final today = DateTime.now();
-      final age = today.year -
+      final age =
+          today.year -
           birthDate.year -
           (today.month > birthDate.month ||
                   (today.month == birthDate.month && today.day >= birthDate.day)
@@ -456,11 +455,7 @@ class Validators {
   // ========================================================================
 
   /// Validate against custom regex pattern
-  static String? pattern(
-    String? value,
-    RegExp pattern,
-    String errorMessage,
-  ) {
+  static String? pattern(String? value, RegExp pattern, String errorMessage) {
     if (value == null || value.trim().isEmpty) {
       return 'Trường này là bắt buộc';
     }
@@ -491,12 +486,7 @@ class Validators {
 }
 
 /// Password strength enum
-enum PasswordStrength {
-  weak,
-  medium,
-  strong,
-  veryStrong,
-}
+enum PasswordStrength { weak, medium, strong, veryStrong }
 
 /// Password strength calculator
 class PasswordStrengthCalculator {