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>

sql/migration_phase4/create_tv_slides_table.sql

@@ -0,0 +1,33 @@
+-- TV Dashboard Slides Management
+-- Run this script to create the tables for TV slide management
+
+-- Table to store slide presentations/folders
+CREATE TABLE IF NOT EXISTS tv_presentations (
+    presentationid INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(100) NOT NULL,
+    folder_path VARCHAR(500) NOT NULL COMMENT 'Full path or subfolder name under base path',
+    interval_seconds INT DEFAULT 10 COMMENT 'Seconds between slides',
+    isactive TINYINT(1) DEFAULT 0 COMMENT 'Only one should be active at a time',
+    created_date DATETIME DEFAULT CURRENT_TIMESTAMP,
+    lastupdated DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    notes VARCHAR(500)
+);
+
+-- Table to store individual slides (optional - for when you want to manage slides in DB)
+CREATE TABLE IF NOT EXISTS tv_slides (
+    slideid INT AUTO_INCREMENT PRIMARY KEY,
+    presentationid INT NOT NULL,
+    filename VARCHAR(255) NOT NULL,
+    display_order INT DEFAULT 0,
+    isactive TINYINT(1) DEFAULT 1,
+    created_date DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (presentationid) REFERENCES tv_presentations(presentationid) ON DELETE CASCADE
+);
+
+-- Insert default presentation
+INSERT INTO tv_presentations (name, folder_path, interval_seconds, isactive, notes)
+VALUES ('Default', 'S:\\ProcessData\\CommDisplay\\ShopSS', 10, 1, 'Default presentation folder');
+
+-- Example: Add a holiday presentation (inactive by default)
+-- INSERT INTO tv_presentations (name, folder_path, interval_seconds, isactive, notes)
+-- VALUES ('Christmas 2025', 'Christmas2025', 10, 0, 'Holiday slides - subfolder of base path');