rework-onboarding (#7)

Onboarding completato, ora super rapido e top

Reviewed-on: http://catelliub.zapto.org:3000/brontomark/flux/pulls/7
Co-authored-by: Mark M2 Macbook <marco@catelli.it>
Co-committed-by: Mark M2 Macbook <marco@catelli.it>

lib/core/widgets/flux_text_field.dart

@@ -1,10 +1,12 @@
 // lib/ui/common/flux_text_field.dart
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flux/core/theme/theme.dart';
 
 class FluxTextField extends StatefulWidget {
   final String label;
-  final IconData icon;
+  final String? labelText;
+  final IconData? icon;
   final bool isPassword;
   final bool autoFocus;
   final TextEditingController? controller;
@@ -14,11 +16,16 @@ class FluxTextField extends StatefulWidget {
   final Function(String)? onSubmitted;
   final Function(String)? onChanged;
   final int? maxLength;
+  final String? Function(String?)? validator;
+  final List<TextInputFormatter>? inputFormatters;
+  final TextCapitalization? textCapitalization;
+  final bool? autocorrect;
 
   const FluxTextField({
     super.key, // Usiamo super.key per Flutter moderno
     required this.label,
-    required this.icon,
+    this.labelText,
+    this.icon,
     this.isPassword = false,
     this.autoFocus = false,
     this.controller,
@@ -28,6 +35,10 @@ class FluxTextField extends StatefulWidget {
     this.onSubmitted,
     this.onChanged,
     this.maxLength,
+    this.validator,
+    this.inputFormatters,
+    this.textCapitalization,
+    this.autocorrect,
   });
 
   @override
@@ -45,11 +56,13 @@ class _FluxTextFieldState extends State<FluxTextField> {
 
   @override
   Widget build(BuildContext context) {
-    return TextField(
+    return TextFormField(
       controller: widget.controller,
+      validator: widget.validator,
       obscureText: _obscureText,
+
       enableSuggestions: !widget.isPassword,
-      autocorrect: !widget.isPassword,
+      autocorrect: widget.isPassword ? false : widget.autocorrect ?? true,
       keyboardType: widget.keyboardType,
       autofocus: widget.autoFocus,
       minLines: widget.minLines,
@@ -57,11 +70,11 @@ class _FluxTextFieldState extends State<FluxTextField> {
       maxLines: widget.minLines != null ? null : widget.maxLines,
       style: TextStyle(color: context.primaryText),
       decoration: InputDecoration(
-        prefixIcon: Icon(
-          widget.icon,
-          color: context.accent.withValues(alpha: 0.6),
-        ),
-        labelText: widget.label,
+        prefixIcon: widget.icon != null
+            ? Icon(widget.icon, color: context.accent.withValues(alpha: 0.6))
+            : null,
+
+        labelText: widget.labelText ?? widget.label,
         labelStyle: TextStyle(color: context.secondaryText, fontSize: 14),
         filled: true,
         fillColor: context.surface.withValues(alpha: 0.5),
@@ -79,6 +92,7 @@ class _FluxTextFieldState extends State<FluxTextField> {
           horizontal: 16,
           vertical: 16,
         ),
+
         suffixIcon: widget.isPassword
             ? IconButton(
                 icon: Icon(
@@ -95,9 +109,12 @@ class _FluxTextFieldState extends State<FluxTextField> {
               )
             : null, // Se non è una password, niente icona
       ),
-      onSubmitted: widget.onSubmitted,
+      onFieldSubmitted: widget.onSubmitted,
       onChanged: widget.onChanged,
       maxLength: widget.maxLength,
+      inputFormatters: widget.inputFormatters,
+
+      textCapitalization: widget.textCapitalization ?? TextCapitalization.none,
     );
   }
 }