Hard delete applications, nest installer packages, detect PE versions

Soft delete left orphaned executables on disk and let a deleted name collide
with a fresh import, so delete is now a hard delete that removes the
associated files. The destructive paths (delete, revert-to-record) require a
typed OK because neither can be undone.

Installers keep their filename at import and nest per application/version,
which stops repeat imports doubling up. Version now comes from the same PE
detection the endpoints agent uses; when no version can be read the caller is
asked for one rather than silently storing a blank.

Applications also surface Version and a monitorable toggle, with launch path
and process name required only while monitorable is ticked. Fleet shows the
PC alias, matching PC Details.

plugins/endpoints/frontend/views/EndpointsList.vue

@@ -87,6 +87,7 @@
                   <input type="checkbox" :checked="allselected" @change="toggleAll" title="Select all on this page" />
                 </th>
                 <th>Status</th>
+                <th>Alias</th>
                 <th>Hostname</th>
                 <th>Machine</th>
                 <th>PC Type</th>
@@ -111,6 +112,7 @@
                 <td>
                   <span class="status-dot" :class="item.status"></span>{{ statusLabel(item.status) }}
                 </td>
+                <td>{{ item.alias || '-' }}</td>
                 <td>{{ item.hostname || '-' }}</td>
                 <td>
                   <!-- What stops if this PC is dead. On a shop floor that is
@@ -130,7 +132,7 @@
                 <td>{{ formatRelative(item.lastreportedat) }}</td>
               </tr>
               <tr v-if="endpoints.length === 0">
-                <td :colspan="cancommand ? 10 : 9" style="text-align: center; color: var(--text-light);">
+                <td :colspan="cancommand ? 11 : 10" style="text-align: center; color: var(--text-light);">
                   No endpoints found
                 </td>
               </tr>