feat: REV-004 — spring elasticOut animation on review submit success

lib/features/reviews/widgets/review_form.dart

@@ -23,13 +23,16 @@ class ReviewForm extends StatefulWidget {
 
 enum _FormState { idle, loading, success }
 
-class _ReviewFormState extends State<ReviewForm> {
+class _ReviewFormState extends State<ReviewForm> with SingleTickerProviderStateMixin {
   int _rating = 0;
   final _commentController = TextEditingController();
   _FormState _state = _FormState.idle;
   bool _isLoggedIn = false;
   String? _error;
 
+  late final AnimationController _checkController;
+  late final Animation<double> _checkScale;
+
   @override
   void initState() {
     super.initState();
@@ -38,6 +41,8 @@ class _ReviewFormState extends State<ReviewForm> {
       _rating = widget.existingReview!.rating;
       _commentController.text = widget.existingReview!.comment ?? '';
     }
+    _checkController = AnimationController(vsync: this, duration: const Duration(milliseconds: 600));
+    _checkScale = CurvedAnimation(parent: _checkController, curve: Curves.elasticOut);
   }
 
   Future<void> _checkAuth() async {
@@ -56,6 +61,7 @@ class _ReviewFormState extends State<ReviewForm> {
       await widget.onSubmit(_rating, _commentController.text);
       if (mounted) {
         setState(() => _state = _FormState.success);
+        _checkController.forward(from: 0);
         Future.delayed(const Duration(seconds: 3), () {
           if (mounted) setState(() => _state = _FormState.idle);
         });
@@ -68,6 +74,7 @@ class _ReviewFormState extends State<ReviewForm> {
   @override
   void dispose() {
     _commentController.dispose();
+    _checkController.dispose();
     super.dispose();
   }
 
@@ -106,10 +113,13 @@ class _ReviewFormState extends State<ReviewForm> {
               ),
               child: Row(
                 mainAxisAlignment: MainAxisAlignment.center,
-                children: const [
-                  Icon(Icons.check_circle, color: Color(0xFF10B981), size: 24),
-                  SizedBox(width: 8),
-                  Text('Review submitted!', style: TextStyle(color: Color(0xFF10B981), fontWeight: FontWeight.w600, fontSize: 15)),
+                children: [
+                  ScaleTransition(
+                    scale: _checkScale,
+                    child: const Icon(Icons.check_circle, color: Color(0xFF10B981), size: 24),
+                  ),
+                  const SizedBox(width: 8),
+                  const Text('Review submitted!', style: TextStyle(color: Color(0xFF10B981), fontWeight: FontWeight.w600, fontSize: 15)),
                 ],
               ),
             )