Agrego frontend app

flutter_soma_app/lib/features/auth/presentation/screens/login_screen.dart

@@ -0,0 +1,98 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:gimnasio_soma/core/widgets/soma_toast.dart';
+import 'package:gimnasio_soma/features/auth/presentation/providers/auth_provider.dart';
+import 'package:gimnasio_soma/features/auth/presentation/widgets/login_desktop.dart';
+import 'package:gimnasio_soma/features/auth/presentation/widgets/login_mobile.dart';
+
+/// Breakpoint para cambiar entre mobile y desktop layout.
+const _kDesktopBreakpoint = 800.0;
+
+class LoginScreen extends ConsumerStatefulWidget {
+  const LoginScreen({super.key});
+
+  @override
+  ConsumerState<LoginScreen> createState() => _LoginScreenState();
+}
+
+class _LoginScreenState extends ConsumerState<LoginScreen>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _animController;
+  late final Animation<double> _fadeIn;
+  late final Animation<Offset> _slideMobile;
+  late final Animation<Offset> _slideDesktop;
+
+  @override
+  void initState() {
+    super.initState();
+    _animController = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 800),
+    );
+
+    _fadeIn = CurvedAnimation(
+      parent: _animController,
+      curve: Curves.easeOut,
+    );
+
+    // Mobile: form slides up
+    _slideMobile = Tween<Offset>(
+      begin: const Offset(0, 0.15),
+      end: Offset.zero,
+    ).animate(CurvedAnimation(
+      parent: _animController,
+      curve: Curves.easeOutCubic,
+    ));
+
+    // Desktop: form slides in from right
+    _slideDesktop = Tween<Offset>(
+      begin: const Offset(0.08, 0),
+      end: Offset.zero,
+    ).animate(CurvedAnimation(
+      parent: _animController,
+      curve: Curves.easeOutCubic,
+    ));
+
+    _animController.forward();
+  }
+
+  @override
+  void dispose() {
+    _animController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _handleLogin(String dni, String password) async {
+    final error = await ref
+        .read(authStateProvider.notifier)
+        .login(dni, password)
+        .timeout(
+      const Duration(seconds: 15),
+      onTimeout: () => 'Tiempo de espera agotado. Verificá tu conexión.',
+    );
+
+    if (!mounted || error == null) return;
+
+    SomaToast.show(context, message: error, type: ToastType.error);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final width = MediaQuery.of(context).size.width;
+    final isDesktop = width >= _kDesktopBreakpoint;
+
+    return Scaffold(
+      body: isDesktop
+          ? LoginDesktop(
+              onSubmit: _handleLogin,
+              fadeIn: _fadeIn,
+              slideIn: _slideDesktop,
+            )
+          : LoginMobile(
+              onSubmit: _handleLogin,
+              fadeIn: _fadeIn,
+              slideUp: _slideMobile,
+            ),
+    );
+  }
+}

flutter_soma_app/lib/features/auth/presentation/screens/splash_screen.dart

@@ -0,0 +1,59 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+import 'package:gimnasio_soma/core/theme/soma_colors.dart';
+import 'package:gimnasio_soma/core/widgets/soma_logo.dart';
+import 'package:gimnasio_soma/features/auth/presentation/providers/auth_provider.dart';
+
+class SplashScreen extends ConsumerStatefulWidget {
+  const SplashScreen({super.key});
+
+  @override
+  ConsumerState<SplashScreen> createState() => _SplashScreenState();
+}
+
+class _SplashScreenState extends ConsumerState<SplashScreen> {
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) => _checkSession());
+  }
+
+  Future<void> _checkSession() async {
+    try {
+      await ref.read(authStateProvider.notifier).checkSession();
+    } catch (_) {
+      // Error en la validación, ir a login
+    }
+
+    if (!mounted) return;
+
+    final user = ref.read(authStateProvider).valueOrNull;
+    if (user == null) {
+      context.go('/login');
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Center(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            const SomaLogo(width: 160),
+            const SizedBox(height: 32),
+            SizedBox(
+              width: 24,
+              height: 24,
+              child: CircularProgressIndicator(
+                strokeWidth: 2.5,
+                color: SomaColors.primary,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}