Add USB, Notifications, Network plugins and reusable EmployeeSearch component

New Plugins:
- USB plugin: Device checkout/checkin with employee lookup, checkout history
- Notifications plugin: Announcements with types, scheduling, shopfloor display
- Network plugin: Network device management with subnets and VLANs
- Equipment and Computers plugins: Asset type separation

Frontend:
- EmployeeSearch component: Reusable employee lookup with autocomplete
- USB views: List, detail, checkout/checkin modals
- Notifications views: List, form with recognition mode
- Network views: Device list, detail, form
- Calendar view with FullCalendar integration
- Shopfloor and TV dashboard views
- Reports index page
- Map editor for asset positioning
- Light/dark mode fixes for map tooltips

Backend:
- Employee search API with external lookup service
- Collector API for PowerShell data collection
- Reports API endpoints
- Slides API for TV dashboard
- Fixed AppVersion model (removed BaseModel inheritance)
- Added checkout_name column to usbcheckouts table

Styling:
- Unified detail page styles
- Improved pagination (page numbers instead of prev/next)
- Dark/light mode theme improvements

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

frontend/src/views/printers/PrintersList.vue

@@ -24,28 +24,28 @@
           <table>
             <thead>
               <tr>
-                <th>Machine #</th>
-                <th>Alias</th>
-                <th>Location</th>
+                <th>Asset #</th>
+                <th>Name</th>
+                <th>Business Unit</th>
                 <th>Model</th>
                 <th>Status</th>
                 <th>Actions</th>
               </tr>
             </thead>
             <tbody>
-              <tr v-for="printer in printers" :key="printer.machineid">
-                <td>{{ printer.machinenumber }}</td>
-                <td>{{ printer.alias || '-' }}</td>
-                <td>{{ printer.location || '-' }}</td>
-                <td>{{ printer.model || '-' }}</td>
+              <tr v-for="printer in printers" :key="printer.printer?.printerid || printer.assetid">
+                <td>{{ printer.assetnumber }}</td>
+                <td>{{ printer.name || '-' }}</td>
+                <td>{{ printer.businessunit_name || '-' }}</td>
+                <td>{{ printer.printer?.model_name || '-' }}</td>
                 <td>
-                  <span class="badge" :class="getStatusClass(printer.status)">
-                    {{ printer.status || 'Unknown' }}
+                  <span class="badge" :class="getStatusClass(printer.status_name)">
+                    {{ printer.status_name || 'Active' }}
                   </span>
                 </td>
                 <td class="actions">
                   <router-link
-                    :to="`/printers/${printer.machineid}`"
+                    :to="`/printers/${printer.printer?.printerid || printer.assetid}`"
                     class="btn btn-secondary btn-sm"
                   >
                     View