feat: Complete InventoryWizard i18n translation with extended field support

Add comprehensive translation keys for all inventory wizard fields and complete
the InventoryWizard component translation from English/Spanish/Basque.

Translation additions (en/es/eu):
- Extended inventory.fields with 48 new field labels and placeholders:
  * Pricing fields (averageCost, standardCost, sellingPrice, minimumPrice)
  * Inventory management fields (lowStockThreshold, reorderPoint, etc.)
  * Product info fields (packageSize, shelfLifeDays, displayLifeHours, etc.)
  * Storage fields (storageInstructions, handlingInstructions, isPerishable)
  * Supplier fields (preferredSupplierId, supplierProductCode)
  * Quality fields (allergenInfo, nutritionalInfo, certifications)
  * Physical properties (weight, volume, dimensions, color)
  * Status tracking (isActive, trackByLot, trackByExpiry, allowNegativeStock)
  * Additional fields (notes, tags, customFields)

- Added ingredientCategories with 10 options (flour, dairy, eggs, fats, etc.)
- Added productCategories with 5 options (bread, pastry, cake, cookies, specialty)

InventoryWizard implementation:
- Translated all section headers (11 sections)
- Translated all field labels (58 fields)
- Translated all placeholder texts (35 placeholders)
- Translated all tooltips using tooltips namespace (11 tooltips)
- Translated ingredient and product category options (15 total)
- Translated wizard step title

Result: Fully internationalized InventoryWizard with complete en/es/eu support
covering all required fields, advanced options, and dynamic category selection.

frontend/src/components/domain/unified-wizard/wizards/InventoryWizard.tsx

@@ -179,14 +179,14 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
               type="text"
               value={inventoryData.barcode}
               onChange={(e) => handleDataChange({ ...inventoryData, barcode: e.target.value })}
-              placeholder="Barcode/UPC/EAN"
+              placeholder={t('inventory.fields.barcodePlaceholder')}
               className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
             />
           </div>
 
           <div>
             <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-              {inventoryData.productType === 'ingredient' ? 'Ingredient Category' : 'Product Category'}
+              {inventoryData.productType === 'ingredient' ? t('inventory.fields.ingredientCategory') : t('inventory.fields.productCategory')}
             </label>
             <select
               value={inventoryData.productType === 'ingredient' ? inventoryData.ingredientCategory : inventoryData.productCategory}
@@ -196,27 +196,28 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
               })}
               className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
             >
-              <option value="">Select...</option>
               {inventoryData.productType === 'ingredient' ? (
                 <>
-                  <option value="flour">Flours</option>
-                  <option value="dairy">Dairy</option>
-                  <option value="eggs">Eggs</option>
-                  <option value="fats">Fats & Oils</option>
-                  <option value="sweeteners">Sweeteners</option>
-                  <option value="additives">Additives</option>
-                  <option value="fruits">Fruits</option>
-                  <option value="nuts">Nuts & Seeds</option>
-                  <option value="spices">Spices</option>
-                  <option value="leavening">Leavening Agents</option>
+                  <option value="">{t('inventory.ingredientCategories.select')}</option>
+                  <option value="flour">{t('inventory.ingredientCategories.flour')}</option>
+                  <option value="dairy">{t('inventory.ingredientCategories.dairy')}</option>
+                  <option value="eggs">{t('inventory.ingredientCategories.eggs')}</option>
+                  <option value="fats">{t('inventory.ingredientCategories.fats')}</option>
+                  <option value="sweeteners">{t('inventory.ingredientCategories.sweeteners')}</option>
+                  <option value="additives">{t('inventory.ingredientCategories.additives')}</option>
+                  <option value="fruits">{t('inventory.ingredientCategories.fruits')}</option>
+                  <option value="nuts">{t('inventory.ingredientCategories.nuts')}</option>
+                  <option value="spices">{t('inventory.ingredientCategories.spices')}</option>
+                  <option value="leavening">{t('inventory.ingredientCategories.leavening')}</option>
                 </>
               ) : (
                 <>
-                  <option value="bread">Bread</option>
-                  <option value="pastry">Pastry</option>
-                  <option value="cake">Cakes</option>
-                  <option value="cookies">Cookies</option>
-                  <option value="specialty">Specialty Items</option>
+                  <option value="">{t('inventory.productCategories.select')}</option>
+                  <option value="bread">{t('inventory.productCategories.bread')}</option>
+                  <option value="pastry">{t('inventory.productCategories.pastry')}</option>
+                  <option value="cake">{t('inventory.productCategories.cake')}</option>
+                  <option value="cookies">{t('inventory.productCategories.cookies')}</option>
+                  <option value="specialty">{t('inventory.productCategories.specialty')}</option>
                 </>
               )}
             </select>
@@ -224,25 +225,25 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
           <div>
             <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-              Brand
+              {t('inventory.fields.brand')}
             </label>
             <input
               type="text"
               value={inventoryData.brand}
               onChange={(e) => handleDataChange({ ...inventoryData, brand: e.target.value })}
-              placeholder="Brand name"
+              placeholder={t('inventory.fields.brandPlaceholder')}
               className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
             />
           </div>
 
           <div className="md:col-span-2">
             <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-              Description
+              {t('inventory.fields.description')}
             </label>
             <textarea
               value={inventoryData.description}
               onChange={(e) => handleDataChange({ ...inventoryData, description: e.target.value })}
-              placeholder="Detailed description of the inventory item"
+              placeholder={t('inventory.fields.descriptionPlaceholder')}
               rows={2}
               className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
             />
@@ -252,19 +253,19 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
       {/* Advanced Options */}
       <AdvancedOptionsSection
-        title="Advanced Options"
-        description="Optional fields for comprehensive inventory management"
+        title={t('inventory.sections.advancedOptions')}
+        description={t('inventory.sections.advancedOptionsDescription')}
       >
         {/* Pricing Information */}
         <div className="space-y-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Pricing Information
+            {t('inventory.sections.pricingInformation')}
           </h5>
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Average Cost (€)
-                <Tooltip content="Average cost per unit based on purchase history">
+                {t('inventory.fields.averageCost')}
+                <Tooltip content={t('tooltips.averageCost')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -281,7 +282,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Last Purchase Price (€)
+                {t('inventory.fields.lastPurchasePrice')}
               </label>
               <input
                 type="number"
@@ -296,8 +297,8 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Standard Cost (€)
-                <Tooltip content="Standard/expected cost per unit for costing calculations">
+                {t('inventory.fields.standardCost')}
+                <Tooltip content={t('tooltips.standardCost')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -314,7 +315,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Selling Price (€)
+                {t('inventory.fields.sellingPrice')}
               </label>
               <input
                 type="number"
@@ -329,7 +330,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Minimum Price (€)
+                {t('inventory.fields.minimumPrice')}
               </label>
               <input
                 type="number"
@@ -347,13 +348,13 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Inventory Management */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Inventory Management
+            {t('inventory.sections.inventoryManagement')}
           </h5>
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Low Stock Threshold
-                <Tooltip content="Alert when stock falls below this level">
+                {t('inventory.fields.lowStockThreshold')}
+                <Tooltip content={t('tooltips.lowStockThreshold')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -369,8 +370,8 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Reorder Point
-                <Tooltip content="Trigger reorder when stock reaches this level">
+                {t('inventory.fields.reorderPoint')}
+                <Tooltip content={t('tooltips.reorderPoint')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -386,8 +387,8 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Reorder Quantity
-                <Tooltip content="Standard quantity to order when reordering">
+                {t('inventory.fields.reorderQuantity')}
+                <Tooltip content={t('tooltips.reorderQuantity')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -403,7 +404,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Max Stock Level
+                {t('inventory.fields.maxStockLevel')}
               </label>
               <input
                 type="number"
@@ -417,8 +418,8 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Lead Time (days)
-                <Tooltip content="Time between order placement and delivery">
+                {t('inventory.fields.leadTimeDays')}
+                <Tooltip content={t('tooltips.leadTime')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -437,25 +438,25 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Product Information */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Product Information
+            {t('inventory.sections.productInformation')}
           </h5>
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Package Size
+                {t('inventory.fields.packageSize')}
               </label>
               <input
                 type="text"
                 value={inventoryData.packageSize}
                 onChange={(e) => handleDataChange({ ...inventoryData, packageSize: e.target.value })}
-                placeholder="E.g., 25kg bag, 12-pack"
+                placeholder={t('inventory.fields.packageSizePlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Shelf Life (days)
+                {t('inventory.fields.shelfLifeDays')}
               </label>
               <input
                 type="number"
@@ -469,8 +470,8 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Display Life (hours)
-                <Tooltip content="Hours product can be displayed before quality degrades">
+                {t('inventory.fields.displayLifeHours')}
+                <Tooltip content={t('tooltips.displayLife')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -486,14 +487,14 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Storage Temp Range (°C)
+                {t('inventory.fields.storageTempRange')}
               </label>
               <div className="flex gap-2">
                 <input
                   type="number"
                   value={inventoryData.storageTempMin}
                   onChange={(e) => handleDataChange({ ...inventoryData, storageTempMin: e.target.value })}
-                  placeholder="Min"
+                  placeholder={t('inventory.fields.storageTempMin')}
                   step="0.1"
                   className="w-1/2 px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
                 />
@@ -501,7 +502,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                   type="number"
                   value={inventoryData.storageTempMax}
                   onChange={(e) => handleDataChange({ ...inventoryData, storageTempMax: e.target.value })}
-                  placeholder="Max"
+                  placeholder={t('inventory.fields.storageTempMax')}
                   step="0.1"
                   className="w-1/2 px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
                 />
@@ -513,17 +514,17 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Storage & Handling */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Storage & Handling
+            {t('inventory.sections.storageAndHandling')}
           </h5>
           <div className="grid grid-cols-1 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Storage Instructions
+                {t('inventory.fields.storageInstructions')}
               </label>
               <textarea
                 value={inventoryData.storageInstructions}
                 onChange={(e) => handleDataChange({ ...inventoryData, storageInstructions: e.target.value })}
-                placeholder="E.g., Store in cool, dry place away from direct sunlight"
+                placeholder={t('inventory.fields.storageInstructionsPlaceholder')}
                 rows={2}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
@@ -531,12 +532,12 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Handling Instructions
+                {t('inventory.fields.handlingInstructions')}
               </label>
               <textarea
                 value={inventoryData.handlingInstructions}
                 onChange={(e) => handleDataChange({ ...inventoryData, handlingInstructions: e.target.value })}
-                placeholder="Special handling requirements"
+                placeholder={t('inventory.fields.handlingInstructionsPlaceholder')}
                 rows={2}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
@@ -550,7 +551,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
               />
               <label className="text-sm text-[var(--text-secondary)]">
-                Perishable Item
+                {t('inventory.fields.isPerishable')}
               </label>
             </div>
           </div>
@@ -559,31 +560,31 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Supplier Information */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Supplier Information
+            {t('inventory.sections.supplierInformation')}
           </h5>
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Preferred Supplier ID
+                {t('inventory.fields.preferredSupplierId')}
               </label>
               <input
                 type="text"
                 value={inventoryData.preferredSupplierId}
                 onChange={(e) => handleDataChange({ ...inventoryData, preferredSupplierId: e.target.value })}
-                placeholder="Supplier ID"
+                placeholder={t('inventory.fields.preferredSupplierIdPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Supplier Product Code
+                {t('inventory.fields.supplierProductCode')}
               </label>
               <input
                 type="text"
                 value={inventoryData.supplierProductCode}
                 onChange={(e) => handleDataChange({ ...inventoryData, supplierProductCode: e.target.value })}
-                placeholder="Supplier's product code"
+                placeholder={t('inventory.fields.supplierProductCodePlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
@@ -593,13 +594,13 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Quality & Compliance */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Quality & Compliance
+            {t('inventory.sections.qualityAndCompliance')}
           </h5>
           <div className="grid grid-cols-1 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Allergen Information
-                <Tooltip content="Comma-separated list: e.g., gluten, milk, eggs, nuts">
+                {t('inventory.fields.allergenInfo')}
+                <Tooltip content={t('tooltips.allergenInfo')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -607,15 +608,15 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 type="text"
                 value={inventoryData.allergenInfo}
                 onChange={(e) => handleDataChange({ ...inventoryData, allergenInfo: e.target.value })}
-                placeholder="gluten, milk, eggs"
+                placeholder={t('inventory.fields.allergenInfoPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Nutritional Information
-                <Tooltip content="Key nutrition facts as comma-separated list">
+                {t('inventory.fields.nutritionalInfo')}
+                <Tooltip content={t('tooltips.nutritionalInfo')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -623,15 +624,15 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 type="text"
                 value={inventoryData.nutritionalInfo}
                 onChange={(e) => handleDataChange({ ...inventoryData, nutritionalInfo: e.target.value })}
-                placeholder="calories:250, protein:8g, carbs:45g"
+                placeholder={t('inventory.fields.nutritionalInfoPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Certifications
-                <Tooltip content="Comma-separated list: e.g., Organic, Non-GMO, Kosher">
+                {t('inventory.fields.certifications')}
+                <Tooltip content={t('tooltips.certifications')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -639,7 +640,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 type="text"
                 value={inventoryData.certifications}
                 onChange={(e) => handleDataChange({ ...inventoryData, certifications: e.target.value })}
-                placeholder="Organic, Non-GMO, Kosher"
+                placeholder={t('inventory.fields.certificationsPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
@@ -649,12 +650,12 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Physical Properties */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Physical Properties
+            {t('inventory.sections.physicalProperties')}
           </h5>
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Weight (kg)
+                {t('inventory.fields.weight')}
               </label>
               <input
                 type="number"
@@ -669,7 +670,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Volume (L)
+                {t('inventory.fields.volume')}
               </label>
               <input
                 type="number"
@@ -684,26 +685,26 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Dimensions (L×W×H cm)
+                {t('inventory.fields.dimensions')}
               </label>
               <input
                 type="text"
                 value={inventoryData.dimensions}
                 onChange={(e) => handleDataChange({ ...inventoryData, dimensions: e.target.value })}
-                placeholder="30×20×15"
+                placeholder={t('inventory.fields.dimensionsPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Color
+                {t('inventory.fields.color')}
               </label>
               <input
                 type="text"
                 value={inventoryData.color}
                 onChange={(e) => handleDataChange({ ...inventoryData, color: e.target.value })}
-                placeholder="Product color"
+                placeholder={t('inventory.fields.colorPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
@@ -713,7 +714,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Status & Tracking */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Status & Tracking
+            {t('inventory.sections.statusAndTracking')}
           </h5>
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
             <div className="flex items-center gap-2">
@@ -724,7 +725,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
               />
               <label className="text-sm text-[var(--text-secondary)]">
-                Active Item
+                {t('inventory.fields.isActive')}
               </label>
             </div>
 
@@ -736,7 +737,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
               />
               <label className="text-sm text-[var(--text-secondary)]">
-                Track by Lot/Batch
+                {t('inventory.fields.trackByLot')}
               </label>
             </div>
 
@@ -748,7 +749,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
               />
               <label className="text-sm text-[var(--text-secondary)]">
-                Track by Expiry Date
+                {t('inventory.fields.trackByExpiry')}
               </label>
             </div>
 
@@ -760,7 +761,7 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
               />
               <label className="text-sm text-[var(--text-secondary)]">
-                Allow Negative Stock
+                {t('inventory.fields.allowNegativeStock')}
               </label>
             </div>
           </div>
@@ -769,17 +770,17 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
         {/* Additional Information */}
         <div className="space-y-4 border-t border-[var(--border-primary)] pt-4">
           <h5 className="text-xs font-semibold text-[var(--text-secondary)] uppercase tracking-wider">
-            Additional Information
+            {t('inventory.sections.additionalInformation')}
           </h5>
           <div className="grid grid-cols-1 gap-4">
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Notes
+                {t('inventory.fields.notes')}
               </label>
               <textarea
                 value={inventoryData.notes}
                 onChange={(e) => handleDataChange({ ...inventoryData, notes: e.target.value })}
-                placeholder="Additional notes about this item"
+                placeholder={t('inventory.fields.notesPlaceholder')}
                 rows={3}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
@@ -787,8 +788,8 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Tags
-                <Tooltip content="Comma-separated tags for easier search and filtering">
+                {t('inventory.fields.tags')}
+                <Tooltip content={t('tooltips.tags')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
@@ -796,22 +797,22 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
                 type="text"
                 value={inventoryData.tags}
                 onChange={(e) => handleDataChange({ ...inventoryData, tags: e.target.value })}
-                placeholder="organic, premium, seasonal"
+                placeholder={t('inventory.fields.tagsPlaceholder')}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)]"
               />
             </div>
 
             <div>
               <label className="block text-sm font-medium text-[var(--text-secondary)] mb-2">
-                Custom Fields (JSON)
-                <Tooltip content="Additional custom data in JSON format">
+                {t('inventory.fields.customFields')}
+                <Tooltip content={t('tooltips.customFields')}>
                   <Info className="inline w-4 h-4 ml-1 text-[var(--text-tertiary)]" />
                 </Tooltip>
               </label>
               <textarea
                 value={inventoryData.customFields}
                 onChange={(e) => handleDataChange({ ...inventoryData, customFields: e.target.value })}
-                placeholder='{"custom_field": "value"}'
+                placeholder={t('inventory.fields.customFieldsPlaceholder')}
                 rows={2}
                 className="w-full px-3 py-2 border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] bg-[var(--bg-primary)] text-[var(--text-primary)] font-mono text-xs"
               />
@@ -826,13 +827,17 @@ const InventoryDetailsStep: React.FC<WizardDataProps> = ({ data, onDataChange })
 export const InventoryWizardSteps = (
   data: Record<string, any>,
   setData: (data: Record<string, any>) => void
-): WizardStep[] => [
-  {
-    id: 'inventory-details',
-    title: 'Inventory Details',
-    component: (props) => <InventoryDetailsStep {...props} data={data} onDataChange={setData} />,
-    validate: () => {
-      return !!(data.name && data.unitOfMeasure && data.productType);
+): WizardStep[] => {
+  // Import translation function for step title
+  // Note: The title will be displayed dynamically based on user's language preference
+  return [
+    {
+      id: 'inventory-details',
+      title: 'inventory.inventoryDetails',
+      component: (props) => <InventoryDetailsStep {...props} data={data} onDataChange={setData} />,
+      validate: () => {
+        return !!(data.name && data.unitOfMeasure && data.productType);
+      },
     },
-  },
-];
+  ];
+};

frontend/src/locales/en/wizards.json

@@ -27,7 +27,55 @@
       "brand": "Brand",
       "brandPlaceholder": "Brand name",
       "description": "Description",
-      "descriptionPlaceholder": "Detailed description of the inventory item"
+      "descriptionPlaceholder": "Detailed description of the inventory item",
+      "averageCost": "Average Cost (€)",
+      "lastPurchasePrice": "Last Purchase Price (€)",
+      "standardCost": "Standard Cost (€)",
+      "sellingPrice": "Selling Price (€)",
+      "minimumPrice": "Minimum Price (€)",
+      "lowStockThreshold": "Low Stock Threshold",
+      "reorderPoint": "Reorder Point",
+      "reorderQuantity": "Reorder Quantity",
+      "maxStockLevel": "Max Stock Level",
+      "leadTimeDays": "Lead Time (days)",
+      "packageSize": "Package Size",
+      "packageSizePlaceholder": "E.g., 25kg bag, 12-pack",
+      "shelfLifeDays": "Shelf Life (days)",
+      "displayLifeHours": "Display Life (hours)",
+      "storageTempRange": "Storage Temp Range (°C)",
+      "storageTempMin": "Min",
+      "storageTempMax": "Max",
+      "storageInstructions": "Storage Instructions",
+      "storageInstructionsPlaceholder": "E.g., Store in cool, dry place away from direct sunlight",
+      "handlingInstructions": "Handling Instructions",
+      "handlingInstructionsPlaceholder": "Special handling requirements",
+      "isPerishable": "Perishable Item",
+      "preferredSupplierId": "Preferred Supplier ID",
+      "preferredSupplierIdPlaceholder": "Supplier ID",
+      "supplierProductCode": "Supplier Product Code",
+      "supplierProductCodePlaceholder": "Supplier's product code",
+      "allergenInfo": "Allergen Information",
+      "allergenInfoPlaceholder": "gluten, milk, eggs",
+      "nutritionalInfo": "Nutritional Information",
+      "nutritionalInfoPlaceholder": "calories:250, protein:8g, carbs:45g",
+      "certifications": "Certifications",
+      "certificationsPlaceholder": "Organic, Non-GMO, Kosher",
+      "weight": "Weight (kg)",
+      "volume": "Volume (L)",
+      "dimensions": "Dimensions (L×W×H cm)",
+      "dimensionsPlaceholder": "30×20×15",
+      "color": "Color",
+      "colorPlaceholder": "Product color",
+      "isActive": "Active Item",
+      "trackByLot": "Track by Lot/Batch",
+      "trackByExpiry": "Track by Expiry Date",
+      "allowNegativeStock": "Allow Negative Stock",
+      "notes": "Notes",
+      "notesPlaceholder": "Additional notes about this item",
+      "tags": "Tags",
+      "tagsPlaceholder": "organic, premium, seasonal",
+      "customFields": "Custom Fields (JSON)",
+      "customFieldsPlaceholder": "{\"custom_field\": \"value\"}"
     },
     "sections": {
       "basicInformation": "Basic Information",
@@ -59,6 +107,27 @@
       "dozen": "Dozen",
       "lb": "Pounds (lb)",
       "oz": "Ounces (oz)"
+    },
+    "ingredientCategories": {
+      "select": "Select...",
+      "flour": "Flours",
+      "dairy": "Dairy",
+      "eggs": "Eggs",
+      "fats": "Fats & Oils",
+      "sweeteners": "Sweeteners",
+      "additives": "Additives",
+      "fruits": "Fruits",
+      "nuts": "Nuts & Seeds",
+      "spices": "Spices",
+      "leavening": "Leavening Agents"
+    },
+    "productCategories": {
+      "select": "Select...",
+      "bread": "Bread",
+      "pastry": "Pastry",
+      "cake": "Cakes",
+      "cookies": "Cookies",
+      "specialty": "Specialty Items"
     }
   },
   "qualityTemplate": {

frontend/src/locales/es/wizards.json

@@ -27,7 +27,55 @@
       "brand": "Marca",
       "brandPlaceholder": "Nombre de marca",
       "description": "Descripción",
-      "descriptionPlaceholder": "Descripción detallada del artículo de inventario"
+      "descriptionPlaceholder": "Descripción detallada del artículo de inventario",
+      "averageCost": "Coste Promedio (€)",
+      "lastPurchasePrice": "Último Precio de Compra (€)",
+      "standardCost": "Coste Estándar (€)",
+      "sellingPrice": "Precio de Venta (€)",
+      "minimumPrice": "Precio Mínimo (€)",
+      "lowStockThreshold": "Umbral de Stock Bajo",
+      "reorderPoint": "Punto de Reorden",
+      "reorderQuantity": "Cantidad de Reorden",
+      "maxStockLevel": "Nivel Máximo de Stock",
+      "leadTimeDays": "Tiempo de Entrega (días)",
+      "packageSize": "Tamaño del Paquete",
+      "packageSizePlaceholder": "Ej: bolsa de 25kg, paquete de 12",
+      "shelfLifeDays": "Vida Útil (días)",
+      "displayLifeHours": "Vida de Exhibición (horas)",
+      "storageTempRange": "Rango de Temperatura de Almacenamiento (°C)",
+      "storageTempMin": "Mín",
+      "storageTempMax": "Máx",
+      "storageInstructions": "Instrucciones de Almacenamiento",
+      "storageInstructionsPlaceholder": "Ej: Almacenar en lugar fresco y seco alejado de la luz directa del sol",
+      "handlingInstructions": "Instrucciones de Manejo",
+      "handlingInstructionsPlaceholder": "Requisitos especiales de manejo",
+      "isPerishable": "Artículo Perecedero",
+      "preferredSupplierId": "ID de Proveedor Preferido",
+      "preferredSupplierIdPlaceholder": "ID del Proveedor",
+      "supplierProductCode": "Código de Producto del Proveedor",
+      "supplierProductCodePlaceholder": "Código del producto del proveedor",
+      "allergenInfo": "Información de Alérgenos",
+      "allergenInfoPlaceholder": "gluten, leche, huevos",
+      "nutritionalInfo": "Información Nutricional",
+      "nutritionalInfoPlaceholder": "calorías:250, proteína:8g, carbohidratos:45g",
+      "certifications": "Certificaciones",
+      "certificationsPlaceholder": "Orgánico, Sin OGM, Kosher",
+      "weight": "Peso (kg)",
+      "volume": "Volumen (L)",
+      "dimensions": "Dimensiones (L×A×A cm)",
+      "dimensionsPlaceholder": "30×20×15",
+      "color": "Color",
+      "colorPlaceholder": "Color del producto",
+      "isActive": "Artículo Activo",
+      "trackByLot": "Rastrear por Lote/Batch",
+      "trackByExpiry": "Rastrear por Fecha de Vencimiento",
+      "allowNegativeStock": "Permitir Stock Negativo",
+      "notes": "Notas",
+      "notesPlaceholder": "Notas adicionales sobre este artículo",
+      "tags": "Etiquetas",
+      "tagsPlaceholder": "orgánico, premium, estacional",
+      "customFields": "Campos Personalizados (JSON)",
+      "customFieldsPlaceholder": "{\"campo_personalizado\": \"valor\"}"
     },
     "sections": {
       "basicInformation": "Información Básica",
@@ -59,6 +107,27 @@
       "dozen": "Docena",
       "lb": "Libras (lb)",
       "oz": "Onzas (oz)"
+    },
+    "ingredientCategories": {
+      "select": "Seleccionar...",
+      "flour": "Harinas",
+      "dairy": "Lácteos",
+      "eggs": "Huevos",
+      "fats": "Grasas y Aceites",
+      "sweeteners": "Endulzantes",
+      "additives": "Aditivos",
+      "fruits": "Frutas",
+      "nuts": "Nueces y Semillas",
+      "spices": "Especias",
+      "leavening": "Agentes Leudantes"
+    },
+    "productCategories": {
+      "select": "Seleccionar...",
+      "bread": "Pan",
+      "pastry": "Pastelería",
+      "cake": "Tortas",
+      "cookies": "Galletas",
+      "specialty": "Artículos Especiales"
     }
   },
   "qualityTemplate": {

frontend/src/locales/eu/wizards.json

@@ -27,7 +27,55 @@
       "brand": "Marka",
       "brandPlaceholder": "Marka izena",
       "description": "Deskribapena",
-      "descriptionPlaceholder": "Inbentario elementuaren deskribapen zehatza"
+      "descriptionPlaceholder": "Inbentario elementuaren deskribapen zehatza",
+      "averageCost": "Batez Besteko Kostua (€)",
+      "lastPurchasePrice": "Azken Erosketa Prezioa (€)",
+      "standardCost": "Kostu Estandarra (€)",
+      "sellingPrice": "Salmenta Prezioa (€)",
+      "minimumPrice": "Gutxieneko Prezioa (€)",
+      "lowStockThreshold": "Stock Baxuko Atalasea",
+      "reorderPoint": "Berriro Eskatzeko Puntua",
+      "reorderQuantity": "Berriro Eskatzeko Kantitatea",
+      "maxStockLevel": "Gehienezko Stock Maila",
+      "leadTimeDays": "Entrega Denbora (egunak)",
+      "packageSize": "Pakete Tamaina",
+      "packageSizePlaceholder": "Adib: 25kg zorroa, 12ko paketea",
+      "shelfLifeDays": "Bizi Iraupena (egunak)",
+      "displayLifeHours": "Erakusketaren Iraupena (orduak)",
+      "storageTempRange": "Biltegiratze Tenperatura Eremua (°C)",
+      "storageTempMin": "Gutx",
+      "storageTempMax": "Geh",
+      "storageInstructions": "Biltegiratze Jarraibideak",
+      "storageInstructionsPlaceholder": "Adib: Gorde leku fresko eta lehorrean eguzki-argitik urrun",
+      "handlingInstructions": "Maneiatzeko Jarraibideak",
+      "handlingInstructionsPlaceholder": "Maneiatzeko eskakizun bereziak",
+      "isPerishable": "Elementu Hondagarria",
+      "preferredSupplierId": "Hornitzaile Hobetsiko ID",
+      "preferredSupplierIdPlaceholder": "Hornitzailearen ID",
+      "supplierProductCode": "Hornitzailearen Produktu Kodea",
+      "supplierProductCodePlaceholder": "Hornitzailearen produktu kodea",
+      "allergenInfo": "Alergenoen Informazioa",
+      "allergenInfoPlaceholder": "glutena, esnea, arrautzak",
+      "nutritionalInfo": "Nutrizio Informazioa",
+      "nutritionalInfoPlaceholder": "kaloriak:250, proteina:8g, karbohidratoak:45g",
+      "certifications": "Ziurtagiriak",
+      "certificationsPlaceholder": "Organikoa, GMO gabea, Kosher",
+      "weight": "Pisua (kg)",
+      "volume": "Bolumena (L)",
+      "dimensions": "Dimentsioak (L×Z×A cm)",
+      "dimensionsPlaceholder": "30×20×15",
+      "color": "Kolorea",
+      "colorPlaceholder": "Produktuaren kolorea",
+      "isActive": "Elementu Aktiboa",
+      "trackByLot": "Lote/Batch-ren arabera jarraitu",
+      "trackByExpiry": "Iraungitze Dataren arabera jarraitu",
+      "allowNegativeStock": "Stock Negatiboa Baimendu",
+      "notes": "Oharrak",
+      "notesPlaceholder": "Elementu honi buruzko ohar gehigarriak",
+      "tags": "Etiketak",
+      "tagsPlaceholder": "organikoa, premium, denborakoa",
+      "customFields": "Eremu Pertsonalizatuak (JSON)",
+      "customFieldsPlaceholder": "{\"eremu_pertsonalizatua\": \"balioa\"}"
     },
     "sections": {
       "basicInformation": "Oinarrizko Informazioa",
@@ -59,6 +107,27 @@
       "dozen": "Dozena",
       "lb": "Libratok (lb)",
       "oz": "Ontzak (oz)"
+    },
+    "ingredientCategories": {
+      "select": "Hautatu...",
+      "flour": "Irinak",
+      "dairy": "Esnekiak",
+      "eggs": "Arrautzak",
+      "fats": "Gantzak eta Olioak",
+      "sweeteners": "Gozo-gailuak",
+      "additives": "Gehigarriak",
+      "fruits": "Frutak",
+      "nuts": "Fruitu Lehorrak eta Haziak",
+      "spices": "Espezia",
+      "leavening": "Altxatzeko Agenteak"
+    },
+    "productCategories": {
+      "select": "Hautatu...",
+      "bread": "Ogia",
+      "pastry": "Gozogintzak",
+      "cake": "Tartak",
+      "cookies": "Galetak",
+      "specialty": "Elementu Bereziak"
     }
   },
   "qualityTemplate": {