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/README.txt

@@ -0,0 +1,76 @@
+TV Dashboard - Slide Display
+============================
+
+SETUP
+-----
+1. Open the dashboard in a browser on the TV/display PC
+2. Click the gear icon (top right) to open settings
+3. Set the base path (default: S:\ProcessData\CommDisplay\ShopSS)
+4. Optionally set a subfolder (e.g., Christmas2025)
+5. Click "Apply & Start"
+
+
+ADDING SLIDES
+-------------
+Due to browser security, the dashboard cannot list directory contents directly.
+Use ONE of these methods:
+
+METHOD 1: slides.txt file (RECOMMENDED)
+- Create a file named "slides.txt" in your slides folder
+- List each image filename on its own line
+- Example:
+    001.jpg
+    002.jpg
+    003.jpg
+    company_logo.png
+    safety_message.jpg
+
+METHOD 2: Numbered files
+- Name your images with 3-digit numbers: 001.jpg, 002.jpg, 003.jpg, etc.
+- The dashboard will automatically find them in order
+
+METHOD 3: Slide1, Slide2, etc.
+- Name files Slide1.jpg, Slide2.jpg, Slide3.jpg, etc.
+- Common when exporting from PowerPoint
+
+
+CREATING SUBFOLDERS
+-------------------
+To organize different presentations:
+
+S:\ProcessData\CommDisplay\ShopSS\
+    ├── slides.txt          <- default slides
+    ├── 001.jpg
+    ├── 002.jpg
+    ├── Christmas2025\
+    │   ├── slides.txt
+    │   ├── holiday_01.jpg
+    │   └── holiday_02.jpg
+    └── Safety\
+        ├── slides.txt
+        └── safety_001.jpg
+
+Then in settings, enter the subfolder name (e.g., "Christmas2025")
+
+
+KEYBOARD SHORTCUTS
+------------------
+Space        - Pause/Resume slideshow
+Left Arrow   - Previous slide
+Right Arrow  - Next slide
+S            - Toggle settings panel
+F            - Toggle fullscreen
+R            - Reload slides
+
+
+SUPPORTED IMAGE FORMATS
+-----------------------
+jpg, jpeg, png, gif, bmp, webp
+
+
+TIPS
+----
+- Press F11 in the browser for fullscreen
+- Settings are saved in the browser and persist after refresh
+- The settings gear only appears when you move the mouse
+- Hover to see the status bar with current slide number