feat(i18n): localize assignment validation messages

src/i18n/dictionaries/en.ts

@@ -294,6 +294,29 @@ export const en = {
       fallback: {
         missingValue: "N/A",
       },
+      actions: {
+        createSuccess: "Assignment created successfully",
+        createFailure: "Error creating assignment",
+        updateSuccess: "Assignment updated successfully",
+        updateFailure: "Error updating assignment",
+        returnSuccess: "Assignment returned successfully",
+        returnFailure: "Error returning assignment",
+        notFound: "Assignment not found",
+        itemNotFound: "Item not found",
+        itemInsufficientStock: "Item does not have enough stock",
+        assetNotFound: "Asset not found",
+        assetItemMismatch: "Asset does not belong to item",
+        assignmentAlreadyReturned: "Assignment already returned",
+        invalidData: "Invalid assignment data",
+        genericFailure: "Error processing assignment",
+      },
+      schema: {
+        recipientRequired: "Recipient is required",
+        itemIdRequired: "Item is required",
+        quantityMinOne: "Quantity must be at least 1",
+        assetIdRequired: "Asset ID is required when item ID is provided",
+        idRequired: "Assignment ID is required",
+      },
     },
     recipients: {
       list: {