feat: implement alias strategy for receipt import with user-scoped and global fallback, enhance validation and normalization, and update UI components

flutter/lib/features/profile/presentation/user_aliases_screen.dart

@@ -31,7 +31,11 @@ class _UserAliasesScreenState extends ConsumerState<UserAliasesScreen> {
       final aliases = await ref.read(adminRepositoryProvider).listReceiptAliases();
       if (!mounted) return;
       setState(() {
-        _aliases = aliases;
+        _aliases = [...aliases]
+          ..sort((a, b) {
+            if (a.isGlobal != b.isGlobal) return a.isGlobal ? 1 : -1;
+            return a.receiptName.compareTo(b.receiptName);
+          });
       });
     } catch (e) {
       if (!mounted) return;
@@ -118,7 +122,7 @@ class _UserAliasesScreenState extends ConsumerState<UserAliasesScreen> {
                   ),
                   const SizedBox(height: 8),
                   Text(
-                    'Alias skapas automatiskt när du sparar kvittorader i inventariet.',
+                    'Alias skapas när du väljer att lära in dem under kvittoimporten.',
                     style: theme.textTheme.bodySmall?.copyWith(color: theme.colorScheme.onSurfaceVariant),
                     textAlign: TextAlign.center,
                   ),
@@ -135,23 +139,41 @@ class _UserAliasesScreenState extends ConsumerState<UserAliasesScreen> {
             final alias = _aliases[i];
             return ListTile(
               leading: Icon(
-                Icons.link_outlined,
+                alias.isGlobal ? Icons.public_outlined : Icons.link_outlined,
                 color: theme.colorScheme.primary,
               ),
               title: Text(
                 alias.receiptName,
                 style: theme.textTheme.bodyMedium?.copyWith(fontWeight: FontWeight.w500),
               ),
-              subtitle: Text(
-                '→ ${alias.displayProductName}',
-                style: theme.textTheme.bodySmall,
-              ),
-              trailing: IconButton(
-                icon: const Icon(Icons.delete_outline),
-                tooltip: 'Ta bort alias',
-                color: theme.colorScheme.error,
-                onPressed: () => _delete(alias),
+              subtitle: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  Text(
+                    '→ ${alias.displayProductName}',
+                    style: theme.textTheme.bodySmall,
+                  ),
+                  const SizedBox(height: 4),
+                  Wrap(
+                    spacing: 8,
+                    children: [
+                      Chip(
+                        visualDensity: VisualDensity.compact,
+                        label: Text(alias.isGlobal ? 'Global fallback' : 'Privat alias'),
+                      ),
+                    ],
+                  ),
+                ],
               ),
+              trailing: alias.isPrivate
+                  ? IconButton(
+                      icon: const Icon(Icons.delete_outline),
+                      tooltip: 'Ta bort alias',
+                      color: theme.colorScheme.error,
+                      onPressed: () => _delete(alias),
+                    )
+                  : null,
             );
           },
         );