feat: improve patient flow and pricing workflow

lib/features/auth/sign_in_screen.dart

@@ -4,6 +4,7 @@ import 'package:flutter_animate/flutter_animate.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import '../../core/l10n/app_strings.dart';
+import '../../core/api/pocketbase_client.dart';
 import '../../core/providers/auth_provider.dart';
 import '../../core/providers/locale_provider.dart';
 import '../../core/router/app_router.dart';
@@ -22,6 +23,13 @@ class _SignInScreenState extends ConsumerState<SignInScreen> {
   final _emailCtrl = TextEditingController();
   final _passCtrl = TextEditingController();
   bool _obscure = true;
+  bool _rememberMe = true;
+
+  @override
+  void initState() {
+    super.initState();
+    _rememberMe = PocketBaseClient.instance.rememberSession;
+  }
 
   @override
   void dispose() {
@@ -34,7 +42,11 @@ class _SignInScreenState extends ConsumerState<SignInScreen> {
     if (!_formKey.currentState!.validate()) return;
     await ref
         .read(authProvider.notifier)
-        .signIn(_emailCtrl.text.trim(), _passCtrl.text);
+        .signIn(
+          _emailCtrl.text.trim(),
+          _passCtrl.text,
+          rememberSession: _rememberMe,
+        );
   }
 
   @override
@@ -366,6 +378,38 @@ class _SignInScreenState extends ConsumerState<SignInScreen> {
                 (v == null || v.isEmpty) ? s.passwordRequired : null,
           ),
 
+          const SizedBox(height: 12),
+
+          InkWell(
+            borderRadius: BorderRadius.circular(10),
+            onTap: auth.isLoading
+                ? null
+                : () => setState(() => _rememberMe = !_rememberMe),
+            child: Padding(
+              padding: const EdgeInsets.symmetric(vertical: 4),
+              child: Row(
+                children: [
+                  Checkbox(
+                    value: _rememberMe,
+                    onChanged: auth.isLoading
+                        ? null
+                        : (value) => setState(() => _rememberMe = value ?? true),
+                    activeColor: const Color(0xFF0D4C85),
+                  ),
+                  const SizedBox(width: 6),
+                  Text(
+                    s.rememberMe,
+                    style: const TextStyle(
+                      fontSize: 14,
+                      color: AppColors.textSecondary,
+                      fontWeight: FontWeight.w500,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+
           if (auth.error != null) ...[
             const SizedBox(height: 14),
             Container(