feat: Improve category ID handling with dynamic parsing in inventory screens

db/seeds/seed_all.sql

@@ -455,7 +455,21 @@ INSERT INTO `Category` (`name`, `parentId`)
 INSERT INTO `Category` (`name`, `parentId`)
   SELECT 'Kryddor', c2.id FROM `Category` c1
   JOIN `Category` c2 ON c2.parentId = c1.id AND c2.name = 'Kryddor & smaksättare'
-  WHERE c1.name = 'Skafferi' AND c1.parentId IS NULL;
+  WHERE c1.name = 'Skafferi'
+    AND c1.parentId IS NULL
+    AND NOT EXISTS (
+      SELECT 1 FROM `Category` existing
+      WHERE existing.parentId = c2.id AND existing.name = 'Kryddor'
+    );
+INSERT INTO `Category` (`name`, `parentId`)
+  SELECT 'Salt', c2.id FROM `Category` c1
+  JOIN `Category` c2 ON c2.parentId = c1.id AND c2.name = 'Kryddor & smaksättare'
+  WHERE c1.name = 'Skafferi'
+    AND c1.parentId IS NULL
+    AND NOT EXISTS (
+      SELECT 1 FROM `Category` existing
+      WHERE existing.parentId = c2.id AND existing.name = 'Salt'
+    );
 INSERT INTO `Category` (`name`, `parentId`)
   SELECT 'Övriga smaksättare', c2.id FROM `Category` c1
   JOIN `Category` c2 ON c2.parentId = c1.id AND c2.name = 'Kryddor & smaksättare'

flutter/lib/features/inventory/presentation/create_inventory_screen.dart

@@ -130,7 +130,7 @@ class _CreateInventoryScreenState
   Map<String, dynamic>? _selectedProduct() {
     if (_selectedProductId == null) return null;
     for (final product in _products) {
-      if ((product['id'] as num).toInt() == _selectedProductId) {
+      if (tryParseDynamicInt(product['id']) == _selectedProductId) {
         return product;
       }
     }
@@ -150,7 +150,7 @@ class _CreateInventoryScreenState
         : _products
             .where(
               (p) => productInSelectedBranch(
-                productCategoryId: (p['categoryId'] as num?)?.toInt(),
+                productCategoryId: tryParseDynamicInt(p['categoryId']),
                 selectedCategoryIds: selectedCategoryIds,
               ),
             )
@@ -165,11 +165,12 @@ class _CreateInventoryScreenState
 
     final sorted = _sortedProductsCache.sort(withSelected);
     return sorted
+        .where((p) => tryParseDynamicInt(p['id']) != null)
         .map(
           (p) => (
-            id: (p['id'] as num).toInt(),
+            id: tryParseDynamicInt(p['id'])!,
             name: (p['canonicalName'] ?? p['name'] ?? '').toString(),
-            categoryId: (p['categoryId'] as num?)?.toInt(),
+            categoryId: tryParseDynamicInt(p['categoryId']),
           ),
         )
         .toList();
@@ -186,7 +187,7 @@ class _CreateInventoryScreenState
       _selectedCategoryId = selected.id;
       final selectedCategoryIds = _selectedCategoryBranchIds();
       final current = _selectedProduct();
-      final currentCategoryId = (current?['categoryId'] as num?)?.toInt();
+      final currentCategoryId = tryParseDynamicInt(current?['categoryId']);
       if (!productInSelectedBranch(
         productCategoryId: currentCategoryId,
         selectedCategoryIds: selectedCategoryIds,
@@ -328,7 +329,7 @@ class _CreateInventoryScreenState
                   _selectedCategoryId = int.tryParse(value);
                   final selectedCategoryIds = _selectedCategoryBranchIds();
                   final current = _selectedProduct();
-                  final currentCategoryId = (current?['categoryId'] as num?)?.toInt();
+                  final currentCategoryId = tryParseDynamicInt(current?['categoryId']);
                   if (!productInSelectedBranch(
                     productCategoryId: currentCategoryId,
                     selectedCategoryIds: selectedCategoryIds,

flutter/lib/features/inventory/presentation/inventory_category_helpers.dart

@@ -1,5 +1,13 @@
 import '../../admin/domain/admin_category_node.dart';
 
+int? tryParseDynamicInt(dynamic value) {
+  if (value == null) return null;
+  if (value is int) return value;
+  if (value is num) return value.toInt();
+  if (value is String) return int.tryParse(value.trim());
+  return null;
+}
+
 class InventoryCategoryBranchIndex {
   final Map<int, Set<int>> _descendantsById;
 
@@ -62,8 +70,8 @@ class InventorySortedProductsCache {
   String _buildKey(List<Map<String, dynamic>> products) {
     final b = StringBuffer('${products.length}|');
     for (final p in products) {
-      final id = (p['id'] as num?)?.toInt() ?? -1;
+      final id = tryParseDynamicInt(p['id']) ?? -1;
-      final categoryId = (p['categoryId'] as num?)?.toInt() ?? -1;
+      final categoryId = tryParseDynamicInt(p['categoryId']) ?? -1;
       final name = (p['canonicalName'] ?? p['name'] ?? '').toString();
       b
         ..write(id)

flutter/lib/features/inventory/presentation/inventory_edit_screen.dart

@@ -152,7 +152,7 @@ class _InventoryEditScreenState extends ConsumerState<InventoryEditScreen> {
   Map<String, dynamic>? _selectedProduct() {
     if (_selectedProductId == null) return null;
     for (final product in _products) {
-      if ((product['id'] as num).toInt() == _selectedProductId) {
+      if (tryParseDynamicInt(product['id']) == _selectedProductId) {
         return product;
       }
     }
@@ -172,7 +172,7 @@ class _InventoryEditScreenState extends ConsumerState<InventoryEditScreen> {
         : _products
             .where(
               (p) => productInSelectedBranch(
-                productCategoryId: (p['categoryId'] as num?)?.toInt(),
+                productCategoryId: tryParseDynamicInt(p['categoryId']),
                 selectedCategoryIds: selectedCategoryIds,
               ),
             )
@@ -186,11 +186,12 @@ class _InventoryEditScreenState extends ConsumerState<InventoryEditScreen> {
 
     final sorted = _sortedProductsCache.sort(withSelected);
     return sorted
+        .where((p) => tryParseDynamicInt(p['id']) != null)
         .map(
           (p) => (
-            id: (p['id'] as num).toInt(),
+            id: tryParseDynamicInt(p['id'])!,
             name: (p['canonicalName'] ?? p['name'] ?? '').toString(),
-            categoryId: (p['categoryId'] as num?)?.toInt(),
+            categoryId: tryParseDynamicInt(p['categoryId']),
           ),
         )
         .toList();
@@ -207,7 +208,7 @@ class _InventoryEditScreenState extends ConsumerState<InventoryEditScreen> {
       _selectedCategoryId = selected.id;
       final selectedCategoryIds = _selectedCategoryBranchIds();
       final current = _selectedProduct();
-      final currentCategoryId = (current?['categoryId'] as num?)?.toInt();
+      final currentCategoryId = tryParseDynamicInt(current?['categoryId']);
       if (!productInSelectedBranch(
         productCategoryId: currentCategoryId,
         selectedCategoryIds: selectedCategoryIds,
@@ -320,7 +321,7 @@ class _InventoryEditScreenState extends ConsumerState<InventoryEditScreen> {
                       _selectedCategoryId = int.tryParse(value);
                       final selectedCategoryIds = _selectedCategoryBranchIds();
                       final current = _selectedProduct();
-                      final currentCategoryId = (current?['categoryId'] as num?)?.toInt();
+                      final currentCategoryId = tryParseDynamicInt(current?['categoryId']);
                       if (!productInSelectedBranch(
                         productCategoryId: currentCategoryId,
                         selectedCategoryIds: selectedCategoryIds,