feat(01-07): update pages with password reset navigation and deep linking

- Updated login page to navigate to /reset-password instead of placeholder
- Added "Forgot Password?" link to signup page
- Enhanced reset password confirmation page to extract token/email from URL parameters
- Updated update password page to handle deep linking parameters
- Added deep linking support configuration in main.dart
- Improved router with URL parameter extraction helpers

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

@@ -186,13 +186,8 @@ class _LoginPageState extends State<LoginPage> {
   }
 
   void _handleForgotPassword() {
-    // TODO: Navigate to forgot password screen
-    ScaffoldMessenger.of(context).showSnackBar(
-      const SnackBar(
-        content: Text('Forgot password feature coming soon'),
-        duration: Duration(seconds: 2),
-      ),
-    );
+    // Navigate to password reset page
+    context.go('/reset-password');
   }
 
   void _handleSignUp() {

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

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
 import '../providers/auth_provider.dart';
 import '../../../../core/errors/auth_exceptions.dart';
+import '../../../../core/router/app_router.dart';
 
 /// Password reset confirmation page
 /// 
@@ -32,22 +34,47 @@ class _ResetPasswordConfirmPageState extends ConsumerState<ResetPasswordConfirmP
     });
 
     try {
-      // Check if we have a valid reset session by attempting to get current user
-      final authProvider = ref.read(authProvider.notifier);
-      await authProvider.getCurrentUser();
+      // Extract token and email from URL parameters (deep linking)
+      final resetData = AppRouter.handlePasswordResetDeepLink(context);
+      final token = resetData['token'];
+      final email = resetData['email'];
       
-      if (mounted) {
-        setState(() {
-          _isLoading = false;
-          _tokenValid = true;
-        });
+      if (token != null && email != null) {
+        // Validate token with auth provider
+        final authProvider = ref.read(authProvider.notifier);
+        await authProvider.validateResetToken(token, email);
         
-        // Navigate to update password page after short delay
-        Future.delayed(const Duration(seconds: 2), () {
-          if (mounted) {
-            Navigator.of(context).pushReplacementNamed('/update-password');
-          }
-        });
+        if (mounted) {
+          setState(() {
+            _isLoading = false;
+            _tokenValid = true;
+          });
+          
+          // Navigate to update password page after short delay
+          Future.delayed(const Duration(seconds: 2), () {
+            if (mounted) {
+              context.go('/update-password?token=$token&email=$email');
+            }
+          });
+        }
+      } else {
+        // No token found, try to get current user (for email flow)
+        final authProvider = ref.read(authProvider.notifier);
+        await authProvider.getCurrentUser();
+        
+        if (mounted) {
+          setState(() {
+            _isLoading = false;
+            _tokenValid = true;
+          });
+          
+          // Navigate to update password page after short delay
+          Future.delayed(const Duration(seconds: 2), () {
+            if (mounted) {
+              context.go('/update-password');
+            }
+          });
+        }
       }
     } catch (e) {
       if (mounted) {

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

@@ -137,6 +137,22 @@ class _SignupPageState extends State<SignupPage> {
                       ),
                     ],
                   ),
+                  const SizedBox(height: 12),
+                  
+                  // Forgot password link
+                  Align(
+                    alignment: Alignment.center,
+                    child: TextButton(
+                      onPressed: _handleForgotPassword,
+                      child: Text(
+                        'Forgot Password?',
+                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                          color: Theme.of(context).colorScheme.primary,
+                          fontWeight: FontWeight.w500,
+                        ),
+                      ),
+                    ),
+                  ),
                 ],
               ),
             ),
@@ -335,4 +351,9 @@ class _SignupPageState extends State<SignupPage> {
     // Navigate to sign in page
     context.go('/login');
   }
+
+  void _handleForgotPassword() {
+    // Navigate to password reset page
+    context.go('/reset-password');
+  }
 }

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

@@ -1,9 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
 import '../../widgets/auth_button.dart';
 import '../providers/auth_provider.dart';
 import '../../../../core/errors/auth_exceptions.dart';
 import '../../../../core/utils/password_validator.dart';
+import '../../../../core/router/app_router.dart';
 
 /// Password update page for handling password reset from email links
 /// 
@@ -28,6 +30,15 @@ class _UpdatePasswordPageState extends ConsumerState<UpdatePasswordPage> {
   String? _errorMessage;
   bool _passwordUpdated = false;
 
+  String? _resetToken;
+  String? _resetEmail;
+
+  @override
+  void initState() {
+    super.initState();
+    _extractResetParameters();
+  }
+
   @override
   void dispose() {
     _newPasswordController.dispose();
@@ -35,6 +46,17 @@ class _UpdatePasswordPageState extends ConsumerState<UpdatePasswordPage> {
     super.dispose();
   }
 
+  /// Extract reset token and email from URL parameters for deep linking
+  void _extractResetParameters() {
+    final resetData = AppRouter.handlePasswordResetDeepLink(context);
+    _resetToken = resetData['token'];
+    _resetEmail = resetData['email'];
+    
+    if (_resetToken != null && _resetEmail != null) {
+      print('Reset parameters extracted for email: $_resetEmail');
+    }
+  }
+
   Future<void> _handlePasswordUpdate() async {
     if (!_formKey.currentState!.validate()) return;
 
@@ -45,9 +67,20 @@ class _UpdatePasswordPageState extends ConsumerState<UpdatePasswordPage> {
 
     try {
       final authProvider = ref.read(authProvider.notifier);
-      await authProvider.updatePasswordFromReset(
-        _newPasswordController.text.trim(),
-      );
+      
+      // Use reset token and email if available (from deep linking)
+      if (_resetToken != null && _resetEmail != null) {
+        await authProvider.updatePasswordWithToken(
+          _resetToken!,
+          _resetEmail!,
+          _newPasswordController.text.trim(),
+        );
+      } else {
+        // Fallback to regular password update
+        await authProvider.updatePasswordFromReset(
+          _newPasswordController.text.trim(),
+        );
+      }
       
       if (mounted) {
         setState(() {