Frontend: asset identifiers, statuses, printer types, UI fixes

- Wire gauge/maintenance refs + identifier toggles into equipment pages.
- Repoint status dropdowns and Settings>Statuses to asset statuses.
- Printer type column/filter; require vendor before model; printer-model picker.
- Per-type identifier labels; printer detail title fallback.
- Fixes: truncate long description cells, opaque supply modal, readable
  dark-mode autofill, drum/waste default colorless.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/views/settings/LocationsList.vue

@@ -38,7 +38,7 @@
                 <td>{{ loc.building || '-' }}</td>
                 <td>{{ loc.floor || '-' }}</td>
                 <td>{{ loc.room || '-' }}</td>
-                <td>{{ loc.description || '-' }}</td>
+                <td class="cell-truncate" :title="loc.description">{{ loc.description || '-' }}</td>
                 <td class="actions">
                   <button
                     class="btn btn-secondary btn-sm"