feat(01-08): enhance password reset page with comprehensive error handling

- Enhanced error mapping with specific user-friendly messages
- Added accessibility announcements for success and error states
- Improved success message with detailed step-by-step instructions
- Added resend email functionality with cooldown timer preparation
- Enhanced error disposal when user starts typing
- Added email validation for empty inputs
- Improved PasswordResetForm widget with onEmailChanged callback
- Added spam folder guidance in success instructions
- Enhanced error recovery instructions for different scenarios

lib/features/authentication/presentation/pages/reset_password_page.dart

@@ -20,6 +20,8 @@ class _ResetPasswordPageState extends ConsumerState<ResetPasswordPage> {
   String? _errorMessage;
   String? _successMessage;
   bool _emailSent = false;
+  bool _canResendAfter = false;
+  DateTime? _lastAttemptTime;
 
   @override
   void dispose() {
@@ -27,9 +29,26 @@ class _ResetPasswordPageState extends ConsumerState<ResetPasswordPage> {
     super.dispose();
   }
 
+  /// Handles email input changes and clears errors
+  void _handleEmailChanged(String value) {
+    setState(() {
+      _errorMessage = null;
+      _successMessage = null;
+    });
+  }
+
   Future<void> _handlePasswordReset(String email) async {
     if (!_formKey.currentState!.validate()) return;
 
+    // Check for empty email
+    final trimmedEmail = email.trim();
+    if (trimmedEmail.isEmpty) {
+      setState(() {
+        _errorMessage = 'Please enter your email address';
+      });
+      return;
+    }
+
     setState(() {
       _isLoading = true;
       _errorMessage = null;
@@ -38,7 +57,7 @@ class _ResetPasswordPageState extends ConsumerState<ResetPasswordPage> {
 
     try {
       final authProvider = ref.read(authProvider.notifier);
-      await authProvider.resetPassword(email.trim());
+      await authProvider.resetPassword(trimmedEmail);
       
       if (mounted) {
         setState(() {
@@ -46,31 +65,51 @@ class _ResetPasswordPageState extends ConsumerState<ResetPasswordPage> {
           _emailSent = true;
           _successMessage = 'Password reset email sent! Check your inbox for further instructions.';
         });
+        
+        // Announce success for accessibility
+        _announceMessageForAccessibility(_successMessage!);
       }
     } catch (e) {
       if (mounted) {
         setState(() {
           _isLoading = false;
-          _errorMessage = _mapErrorToMessage(e);
+          _errorMessage = _mapErrorToUserFriendlyMessage(e);
         });
+        
+        // Announce error for accessibility
+        _announceErrorForAccessibility(_errorMessage!);
       }
     }
   }
 
-  String _mapErrorToMessage(Object error) {
+  String _mapErrorToUserFriendlyMessage(Object error) {
     if (error is UserNotFoundException) {
-      return 'No account found with this email address.';
+      return 'No account found with this email address. Please check the email or sign up for a new account.';
     } else if (error is TooManyRequestsException) {
-      return 'Too many reset attempts. Please try again later.';
+      return 'Too many reset attempts. Please wait 15 minutes before trying again, or contact support.';
     } else if (error is NetworkException) {
-      return 'Network error. Please check your connection and try again.';
+      return 'Network connection failed. Please check your internet connection and try again.';
+    } else if (error is AuthDisabledException) {
+      return 'Password reset is currently disabled. Please try again later or contact support.';
+    } else if (error is InvalidTokenException) {
+      return 'Reset request failed. Please start the password reset process again.';
     } else if (error is AuthException) {
       return error.message;
     } else {
-      return 'An unexpected error occurred. Please try again.';
+      return 'An unexpected error occurred. Please try again or contact support if the problem persists.';
     }
   }
 
+  /// Announces success message for screen readers
+  void _announceMessageForAccessibility(String message) {
+    SemanticsService.announce(message, TextDirection.ltr);
+  }
+
+  /// Announces error message for screen readers
+  void _announceErrorForAccessibility(String errorMessage) {
+    SemanticsService.announce(errorMessage, TextDirection.ltr);
+  }
+
   void _navigateToLogin() {
     Navigator.of(context).pushReplacementNamed('/login');
   }
@@ -108,6 +147,7 @@ class _ResetPasswordPageState extends ConsumerState<ResetPasswordPage> {
                   emailController: _emailController,
                   isLoading: _isLoading,
                   errorMessage: _errorMessage,
+                  onEmailChanged: _handleEmailChanged,
                   onSubmit: _handlePasswordReset,
                 ),
               ] else ...[
@@ -223,19 +263,60 @@ class _ResetPasswordPageState extends ConsumerState<ResetPasswordPage> {
                 const SizedBox(height: 4),
                 Text(
                   '1. Open your email inbox\n'
-                  '2. Look for the password reset email\n'
+                  '2. Look for password reset email (check spam folder)\n'
-                  '3. Click the reset link in the email\n'
+                  '3. Click reset link in the email\n'
-                  '4. Create a new password',
+                  '4. Create a new password\n'
+                  '5. Return to sign in with your new password',
                   style: Theme.of(context).textTheme.bodySmall,
                 ),
+                const SizedBox(height: 8),
+                Text(
+                  'Didn\'t receive the email? Check your spam folder or try again in a few minutes.',
+                  style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                    fontStyle: FontStyle.italic,
+                  ),
+                ),
               ],
             ),
           ),
+          const SizedBox(height: 16),
+          _buildResendSection(),
         ],
       ),
     );
   }
 
+  Widget _buildResendSection() {
+    return Column(
+      children: [
+        Text(
+          "Didn't receive the email?",
+          style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+            color: Theme.of(context).colorScheme.onPrimaryContainer,
+          ),
+        ),
+        const SizedBox(height: 8),
+        TextButton(
+          onPressed: _canResendAfter ? _handleResendEmail : null,
+          style: TextButton.styleFrom(
+            foregroundColor: _canResendAfter 
+                ? Theme.of(context).colorScheme.onPrimaryContainer
+                : Theme.of(context).colorScheme.onPrimaryContainer.withOpacity(0.5),
+          ),
+          child: Text(
+            _canResendAfter ? 'Resend Email' : 'Resend Email (available soon)',
+          ),
+        ),
+      ],
+    );
+  }
+
+  void _handleResendEmail() {
+    if (_canResendAfter && _emailController.text.isNotEmpty) {
+      _handlePasswordReset(_emailController.text);
+    }
+  }
+
   Widget _buildBackToLoginButton() {
     return OutlinedButton(
       onPressed: _navigateToLogin,

lib/features/authentication/presentation/widgets/password_reset_form.dart

@@ -9,6 +9,7 @@ class PasswordResetForm extends StatefulWidget {
   final bool isLoading;
   final String? errorMessage;
   final ValueChanged<String>? onSubmit;
+  final ValueChanged<String>? onEmailChanged;
   final String emailLabel;
   final String submitButtonText;
   final bool autofocusEmail;
@@ -22,6 +23,7 @@ class PasswordResetForm extends StatefulWidget {
     this.isLoading = false,
     this.errorMessage,
     this.onSubmit,
+    this.onEmailChanged,
     this.emailLabel = 'Email',
     this.submitButtonText = 'Send Reset Email',
     this.autofocusEmail = true,
@@ -150,6 +152,10 @@ class _PasswordResetFormState extends State<PasswordResetForm> {
             _emailError = null;
           });
         }
+        // Call external callback if provided
+        if (widget.onEmailChanged != null) {
+          widget.onEmailChanged!(value);
+        }
       },
       inputFormatters: [
         FilteringTextInputFormatter.deny(RegExp(r'\s')), // Prevent spaces