Add USB checkout system and SSO profile page

New Features:
- USB Device checkout/check-in system with barcode scanning
  - displayusb.asp: List all USB devices with status
  - addusb.asp: Add new USB devices via barcode scan
  - checkout_usb.asp/savecheckout_usb.asp: Check out USB to SSO
  - checkin_usb.asp/savecheckin_usb.asp: Check in with wipe confirmation
  - usb_history.asp: Full checkout history with filters
  - api_usb.asp: JSON API for AJAX lookups
- displayprofile.asp: SSO profile page showing user info and USB history
- Date/time format changed to 12-hour (MM/DD/YYYY h:mm AM/PM)
- SSO links in USB history now link to profile page via search

Database:
- New machinetypeid 44 for USB devices
- New usb_checkouts table for tracking checkouts

Cleanup:
- Removed v2 folder (duplicate/old files)
- Removed old debug/test files
- Removed completed migration documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

addnotification.asp

@@ -92,6 +92,26 @@
                   <small class="form-text text-muted">Select a specific business unit or leave blank to apply to all</small>
                 </div>
 
+                <div class="form-group">
+                  <label for="appid">Related Application <span class="text-muted">(Optional)</span></label>
+                  <select class="form-control" id="appid" name="appid">
+                    <option value="">-- No Application --</option>
+<%
+                    Dim rsApps
+                    Set rsApps = objConn.Execute("SELECT appid, appname FROM applications WHERE isactive = 1 ORDER BY appname")
+                    While Not rsApps.EOF
+%>
+                    <option value="<%=rsApps("appid")%>"><%=Server.HTMLEncode(rsApps("appname") & "")%></option>
+<%
+                      rsApps.MoveNext
+                    Wend
+                    rsApps.Close
+                    Set rsApps = Nothing
+%>
+                  </select>
+                  <small class="form-text text-muted">Link this notification to a specific application (e.g., for software updates)</small>
+                </div>
+
                 <div class="form-group">
                   <label for="ticketnumber">Ticket Number</label>
                   <input type="text" class="form-control" id="ticketnumber" name="ticketnumber"