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/assets/style.css

@@ -372,6 +372,15 @@ th, td {
   border-top: 1px solid var(--border);
 }
 
+/* Cap a long free-text column (e.g. Description) so it truncates with an
+   ellipsis instead of widening the row and pushing the Actions column out of
+   view. Pair with a title attribute to show the full text on hover. */
+td.cell-truncate {
+  max-width: 32rem;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
 th {
   font-weight: 600;
   font-size: 11px;