Endpoint telemetry, PC Detail rework and a checked backup/restore path

plugins/computers/frontend/views/PCForm.vue

@@ -573,12 +573,14 @@ onMounted(async () => {
       operatingsystemsApi.list({ perpage: 100 }),
       computersApi.protocols.list(),
       businessunitsApi.listAll(),
-      // Handles its own failure: a site without printers still gets a form.
     ])
 
     pcTypes.value = ptRes.data.data || []
     statuses.value = statusRes.data.data || []
-    vendors.value = vendorRes.data.data || []
+    // listAll() pages past the server's 100-row cap and returns the ROWS, not
+    // an axios response, so these are read directly. Reading .data.data here
+    // throws and takes the whole form down with it.
+    vendors.value = vendorRes || []
     models.value = allModels
     locations.value = locRes || []
     operatingsystems.value = osRes.data.data || []
@@ -636,7 +638,11 @@ onMounted(async () => {
     }
   } catch (err) {
     console.error('Error loading data:', err)
-    error.value = 'Failed to load data'
+    // A client-side TypeError has no err.response, so apiError() would report
+    // only the fallback and hide which field broke. Name it either way.
+    error.value = err?.response
+      ? apiError(err, 'Failed to load data')
+      : `Failed to load data: ${err?.message || err}`
   } finally {
     loading.value = false
   }