Initial commit: unionflow-mobile-apps

Application Flutter complète (sans build artifacts).

Signed-off-by: lions dev Team

lib/shared/design_system/components/animated_fade_in.dart

@@ -0,0 +1,60 @@
+import 'package:flutter/material.dart';
+
+/// Widget avec animation de fade-in automatique
+class AnimatedFadeIn extends StatefulWidget {
+  final Widget child;
+  final Duration duration;
+  final Duration delay;
+  final Curve curve;
+
+  const AnimatedFadeIn({
+    super.key,
+    required this.child,
+    this.duration = const Duration(milliseconds: 600),
+    this.delay = Duration.zero,
+    this.curve = Curves.easeOut,
+  });
+
+  @override
+  State<AnimatedFadeIn> createState() => _AnimatedFadeInState();
+}
+
+class _AnimatedFadeInState extends State<AnimatedFadeIn>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<double> _animation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: widget.duration,
+      vsync: this,
+    );
+
+    _animation = CurvedAnimation(
+      parent: _controller,
+      curve: widget.curve,
+    );
+
+    Future.delayed(widget.delay, () {
+      if (mounted) {
+        _controller.forward();
+      }
+    });
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return FadeTransition(
+      opacity: _animation,
+      child: widget.child,
+    );
+  }
+}