printedparts stage 14: retire/restore in the UI, dashless item codes

Retire button with confirmation on the detail page (item leaves the
storefront and the kiosk rejects its code; ledger history and label
survive), Restore on retired items, and an Include-retired list toggle
with a badge. Restore is its own permission-gated POST - the generic
update still cannot flip isactive. New codes mint as WJRP0042 style
without the dash; existing codes are immutable bin labels and keep
their form.

frontend/src/api/index.js

@@ -1144,6 +1144,9 @@ export const printedpartsApi = {
   remove(printeditemid) {
     return api.delete(`/printedparts/items/${printeditemid}`)
   },
+  restore(printeditemid) {
+    return api.post(`/printedparts/items/${printeditemid}/restore`)
+  },
   uploadImage(printeditemid, file) {
     const formData = new FormData()
     formData.append('file', file)