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>

tv-dashboard/update_slides.bat

@@ -0,0 +1,23 @@
+@echo off
+:: TV Slideshow - Generate slides.js
+:: Run this after adding/removing slides
+
+cd /d "S:\DT\tv"
+
+:: Generate slides.js from image files in slides subfolder
+echo var SLIDES = [ > slides.js
+setlocal enabledelayedexpansion
+set first=1
+for /f "tokens=*" %%F in ('dir /b /on slides\*.jpg slides\*.jpeg slides\*.png slides\*.gif slides\*.bmp slides\*.webp 2^>nul') do (
+    if !first!==1 (
+        echo     "slides/%%F" >> slides.js
+        set first=0
+    ) else (
+        echo     ,"slides/%%F" >> slides.js
+    )
+)
+endlocal
+echo ]; >> slides.js
+
+echo Updated slides.js
+pause