feat: implement user-scoped receipt aliases with global fallback; enhance alias management in admin panel

flutter/lib/features/import/presentation/receipt_import_tab.dart

@@ -463,10 +463,13 @@ class _ReceiptImportTabState extends ConsumerState<ReceiptImportTab> {
     int merged = 0;
     int pantryAdded = 0;
     int pantrySkipped = 0;
+    int aliasesLearned = 0;
     try {
       final token = await ref.read(authStateProvider.future);
       final invRepo = ref.read(inventoryRepositoryProvider);
       final pantryRepo = ref.read(pantryRepositoryProvider);
+      final adminRepo = ref.read(adminRepositoryProvider);
+      final canManageAliases = ref.read(isAdminProvider);
 
       for (final i in toAdd) {
         final edit = _edits[i]!;
@@ -514,6 +517,24 @@ class _ReceiptImportTabState extends ConsumerState<ReceiptImportTab> {
             created++;
           }
         }
+
+        final normalizedReceiptName = item.rawName.trim().toLowerCase();
+        final shouldLearnAlias =
+            canManageAliases &&
+            normalizedReceiptName.isNotEmpty &&
+            item.matchedProductId != pid;
+        if (shouldLearnAlias) {
+          try {
+            await adminRepo.upsertReceiptAlias(
+              receiptName: normalizedReceiptName,
+              productId: pid,
+            );
+            aliasesLearned++;
+          } catch (e, st) {
+            debugPrint('ReceiptImportTab alias upsert failed: $e');
+            debugPrintStack(stackTrace: st);
+          }
+        }
       }
 
       if (!mounted) return;
@@ -522,6 +543,7 @@ class _ReceiptImportTabState extends ConsumerState<ReceiptImportTab> {
         if (merged > 0) '$merged ${merged == 1 ? 'sammanslagen' : 'sammanslagna'} i inventarie',
         if (pantryAdded > 0) '$pantryAdded tillagd${pantryAdded == 1 ? '' : 'a'} i baslager',
         if (pantrySkipped > 0) '$pantrySkipped fanns redan i baslager',
+        if (aliasesLearned > 0) '$aliasesLearned alias inlärda',
       ];
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text(parts.join(', ') + '.')),