feat: Implement permanent deletion and restoration of notes with updated UI

lib/screens/home_screen.dart

@@ -47,6 +47,7 @@ class _HomeScreenState extends State<HomeScreen> {
   bool _isLoading = true;
   bool _isDragging = false;
   bool _isMenuOpen = false;
+  bool _showDeletedNotes = false;
   PointerDeviceKind _lastPointerKind = PointerDeviceKind.mouse;
 
   bool _requiresLongPressToDrag(PointerDeviceKind kind) {
@@ -71,7 +72,9 @@ class _HomeScreenState extends State<HomeScreen> {
 
   Future<void> _loadNotes() async {
     try {
-      final List<Note> storedNotes = await widget.repository.loadNotes();
+      final List<Note> storedNotes = _showDeletedNotes
+          ? await widget.repository.loadDeletedNotes()
+          : await widget.repository.loadNotes();
 
       if (!mounted) return;
 
@@ -95,19 +98,8 @@ class _HomeScreenState extends State<HomeScreen> {
     }
 
     if (result is Note) {
-      final Note createdNote = await widget.repository.createNote(result);
-      final List<Note> updatedNotes = _normalizeNotes(<Note>[
-        createdNote,
-        ..._notes,
-      ]);
-
-      if (!mounted) {
-        return;
-      }
-
-      setState(() {
-        _notes = updatedNotes;
-      });
+      await widget.repository.createNote(result);
+      await _loadNotes();
 
       // Trigger sync after creating a note.
       try {
@@ -118,18 +110,7 @@ class _HomeScreenState extends State<HomeScreen> {
 
   Future<void> _deleteNote(Note note) async {
     await widget.repository.deleteNote(note);
-
-    final List<Note> updatedNotes = _normalizeNotes(
-      _notes.where((Note item) => item.id != note.id).toList(),
-    );
-
-    if (!mounted) {
-      return;
-    }
-
-    setState(() {
-      _notes = updatedNotes;
-    });
+    await _loadNotes();
 
     // Trigger sync after deleting a note.
     try {
@@ -142,19 +123,10 @@ class _HomeScreenState extends State<HomeScreen> {
       return;
     }
 
-    final List<Note> updatedNotes = [..._notes];
-    final Note movedNote = updatedNotes.removeAt(oldIndex);
-    updatedNotes.insert(newIndex, movedNote);
+    final Note movedNote = _notes[oldIndex];
 
     await widget.repository.moveNote(movedNote, newIndex);
-
-    if (!mounted) {
-      return;
-    }
-
-    setState(() {
-      _notes = _normalizeNotes(updatedNotes);
-    });
+    await _loadNotes();
   }
 
   Future<void> _openNoteEditor(Note note) async {
@@ -173,19 +145,9 @@ class _HomeScreenState extends State<HomeScreen> {
     }
 
     if (result is Note) {
-      final int noteIndex = _notes.indexWhere((Note item) => item == note);
-      if (noteIndex != -1) {
-        final Note savedNote = await widget.repository.updateNote(result);
-        final List<Note> updatedNotes = [..._notes];
-        updatedNotes[noteIndex] = savedNote;
-
-        if (!mounted) {
-          return;
-        }
-
-        setState(() {
-          _notes = _normalizeNotes(updatedNotes);
-        });
+      if (_notes.any((Note item) => item == note)) {
+        await widget.repository.updateNote(result);
+        await _loadNotes();
         // Trigger sync after editing a note.
         try {
           await widget.onRequestSync();
@@ -194,12 +156,6 @@ class _HomeScreenState extends State<HomeScreen> {
     }
   }
 
-  List<Note> _normalizeNotes(List<Note> notes) {
-    return notes.asMap().entries.map((MapEntry<int, Note> entry) {
-      return entry.value.copyWith(index: entry.key);
-    }).toList();
-  }
-
   List<Note> _getFilteredNotes() {
     if (_searchQuery.isEmpty) {
       return _notes;
@@ -215,6 +171,36 @@ class _HomeScreenState extends State<HomeScreen> {
         .toList();
   }
 
+  Future<void> _handleMenuItemTapped(String item) async {
+    setState(() {
+      _isMenuOpen = false;
+    });
+
+    if (item == 'settings') {
+      widget.onOpenSettings();
+      return;
+    }
+
+    if (item == 'deleted_notes') {
+      setState(() {
+        _showDeletedNotes = true;
+        _searchQuery = '';
+        _isLoading = true;
+      });
+      await _loadNotes();
+      return;
+    }
+
+    if (item == 'all_notes') {
+      setState(() {
+        _showDeletedNotes = false;
+        _searchQuery = '';
+        _isLoading = true;
+      });
+      await _loadNotes();
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final double width = MediaQuery.of(context).size.width;
@@ -223,8 +209,8 @@ class _HomeScreenState extends State<HomeScreen> {
     final Widget body = _isLoading
         ? const Center(child: CircularProgressIndicator())
         : _notes.isEmpty
-        ? const _EmptyState()
-        : RefreshIndicator(
+            ? _EmptyState(showDeletedNotes: _showDeletedNotes)
+            : RefreshIndicator(
             onRefresh: () async {
               await widget.onRequestSync();
             },
@@ -599,15 +585,10 @@ class _HomeScreenState extends State<HomeScreen> {
                         color: const Color.fromRGBO(24, 25, 26, 1),
                         elevation: 8,
                         child: MenuDrawer(
-                          onMenuItemTapped: (String item) {
-                            setState(() {
-                              _isMenuOpen = false;
-                            });
-
-                            if (item == 'settings') {
-                              widget.onOpenSettings();
-                            }
-                          },
+                          onMenuItemTapped: _handleMenuItemTapped,
+                          selectedItem: _showDeletedNotes
+                              ? 'deleted_notes'
+                              : 'all_notes',
                         ),
                       ),
                     ),
@@ -618,41 +599,47 @@ class _HomeScreenState extends State<HomeScreen> {
           ),
         ),
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _openNoteComposer,
-        child: const MouseRegion(
-          cursor: SystemMouseCursors.click,
-          child: Icon(Icons.add),
-        ),
-      ),
+      floatingActionButton: _showDeletedNotes
+          ? null
+          : FloatingActionButton(
+              onPressed: _openNoteComposer,
+              child: const MouseRegion(
+                cursor: SystemMouseCursors.click,
+                child: Icon(Icons.add),
+              ),
+            ),
     );
   }
 }
 
 class _EmptyState extends StatelessWidget {
-  const _EmptyState();
+  const _EmptyState({required this.showDeletedNotes});
+
+  final bool showDeletedNotes;
 
   @override
   Widget build(BuildContext context) {
     return Center(
       child: Column(
         mainAxisSize: MainAxisSize.min,
-        children: const [
-          Icon(Icons.note_add_outlined, color: Colors.white54, size: 48),
-          SizedBox(height: 12),
+        children: [
+          const Icon(Icons.note_add_outlined, color: Colors.white54, size: 48),
+          const SizedBox(height: 12),
           Text(
-            'Aún no hay notas',
-            style: TextStyle(
+            showDeletedNotes ? 'No hay notas borradas' : 'Aún no hay notas',
+            style: const TextStyle(
               color: Colors.white,
               fontSize: 18,
               fontWeight: FontWeight.w600,
             ),
           ),
-          SizedBox(height: 8),
+          const SizedBox(height: 8),
           Text(
-            'Pulsa el botón + para crear la primera.',
+            showDeletedNotes
+                ? 'Las notas borradas aparecerán aquí para poder restaurarlas.'
+                : 'Pulsa el botón + para crear la primera.',
             textAlign: TextAlign.center,
-            style: TextStyle(color: Colors.white70),
+            style: const TextStyle(color: Colors.white70),
           ),
         ],
       ),

lib/screens/note_editor_screen.dart

@@ -93,18 +93,21 @@ class _NoteEditorScreenState extends State<NoteEditorScreen> {
   }
 
   void _deleteNote() {
+    final bool isDeletedNote = _currentNote.isDeleted;
     showDialog(
       context: context,
       builder: (BuildContext context) {
         return AlertDialog(
           backgroundColor: const Color(0xFF303134),
-          title: const Text(
-            'Eliminar nota',
-            style: TextStyle(color: Colors.white),
+          title: Text(
+            isDeletedNote ? 'Eliminar permanentemente' : 'Eliminar nota',
+            style: const TextStyle(color: Colors.white),
           ),
-          content: const Text(
-            '¿Estás seguro de que deseas eliminar esta nota?',
-            style: TextStyle(color: Colors.white70),
+          content: Text(
+            isDeletedNote
+                ? 'Esta nota ya está borrada. Si la eliminas ahora, se borrará permanentemente.'
+                : '¿Estás seguro de que deseas eliminar esta nota?',
+            style: const TextStyle(color: Colors.white70),
           ),
           actions: [
             TextButton(
@@ -119,9 +122,9 @@ class _NoteEditorScreenState extends State<NoteEditorScreen> {
                 Navigator.of(context).pop();
                 Navigator.of(context).pop('delete');
               },
-              child: const Text(
-                'Eliminar',
-                style: TextStyle(color: Colors.red),
+              child: Text(
+                isDeletedNote ? 'Eliminar permanentemente' : 'Eliminar',
+                style: const TextStyle(color: Colors.red),
               ),
             ),
           ],