Migrate frontend to plugin-based asset architecture

- Add equipmentApi and computersApi to replace legacy machinesApi
- Add controller vendor/model fields to Equipment model and forms
- Fix map marker navigation to use plugin-specific IDs (equipmentid,
  computerid, printerid, networkdeviceid) instead of assetid
- Fix search to use unified Asset table with correct plugin IDs
- Remove legacy printer search that used non-existent field names
- Enable optional JWT auth for detail endpoints (public read access)
- Clean up USB plugin models (remove unused checkout model)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/views/Dashboard.vue

@@ -54,10 +54,10 @@
         </div>
       </div>
 
-      <!-- Recent Machines -->
+      <!-- Recent Devices -->
       <div class="card">
         <div class="card-header">
-          <h3>Recent Machines</h3>
+          <h3>Recent Devices</h3>
           <router-link to="/machines" class="btn btn-secondary btn-sm">View All</router-link>
         </div>
 
@@ -65,26 +65,22 @@
           <table>
             <thead>
               <tr>
-                <th>Machine #</th>
-                <th>Alias</th>
+                <th>Name</th>
+                <th>Category</th>
                 <th>Type</th>
-                <th>Status</th>
+                <th>Business Unit</th>
               </tr>
             </thead>
             <tbody>
               <tr v-for="machine in recentMachines" :key="machine.machineid">
-                <td>{{ machine.machinenumber }}</td>
-                <td>{{ machine.alias || '-' }}</td>
-                <td>{{ machine.machinetype }}</td>
-                <td>
-                  <span class="badge" :class="getStatusClass(machine.status)">
-                    {{ machine.status || 'Unknown' }}
-                  </span>
-                </td>
+                <td>{{ machine.machinenumber || machine.hostname || machine.alias || '-' }}</td>
+                <td>{{ machine.category || '-' }}</td>
+                <td>{{ machine.machinetype || '-' }}</td>
+                <td>{{ machine.businessunit || '-' }}</td>
               </tr>
               <tr v-if="recentMachines.length === 0">
                 <td colspan="4" style="text-align: center; color: var(--text-light);">
-                  No machines found
+                  No devices found
                 </td>
               </tr>
             </tbody>