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/machines/MachineDetail.vue

@@ -68,6 +68,14 @@
                 <span class="info-label">Name</span>
                 <span class="info-value">{{ equipment.name }}</span>
               </div>
+              <div class="info-row" v-if="identifierflags.gaugelabreference && equipment.gaugelabreference">
+                <span class="info-label">Gauge Lab Reference</span>
+                <span class="info-value mono">{{ equipment.gaugelabreference }}</span>
+              </div>
+              <div class="info-row" v-if="identifierflags.maintenancereference && equipment.maintenancereference">
+                <span class="info-label">Maintenance Reference</span>
+                <span class="info-value mono">{{ equipment.maintenancereference }}</span>
+              </div>
               <div class="info-row" v-if="equipment.serialnumber">
                 <span class="info-label">Serial Number</span>
                 <span class="info-value mono">{{ equipment.serialnumber }}</span>
@@ -229,8 +237,10 @@ import { ref, computed, onMounted } from 'vue'
 import { useRoute } from 'vue-router'
 import { equipmentApi, assetsApi } from '../../api'
 import LocationMapTooltip from '../../components/LocationMapTooltip.vue'
+import { useIdentifierFlags } from '../../composables/identifierSettings'
 
 const route = useRoute()
+const identifierflags = useIdentifierFlags()
 
 const loading = ref(true)
 const equipment = ref(null)