feat: Add PWA support and consolidate CSS design system

- Add PWA manifest, icons (192x192, 512x512), and service worker
- Register service worker in index.html with Apple mobile web app support
- Consolidate CSS variables and design tokens documentation
- Update PrimeVue overrides for consistent theming
- Refactor data-entry components to use shared CSS patterns
- Add frontend-style-auditor agent for style consistency checks
- Minor OCR validation and job worker improvements
- Update start-prod.sh configuration

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

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

start-prod.sh

@@ -10,6 +10,10 @@ set -e  # Exit on any error
 # Get the directory where this script is located
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
+# Load NVM if available (required for npm)
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+
 # Colors for output
 RED='\033[0;31m'
 GREEN='\033[0;32m'
@@ -220,7 +224,8 @@ else
 
     # Start frontend
     print_message "Starting Vite development server..."
-    nohup npm run dev > /tmp/unified_frontend_prod.log 2>&1 &
+    # Use bash -c to ensure NVM environment is loaded for nohup
+    nohup bash -c 'export NVM_DIR="$HOME/.nvm"; [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"; npm run dev' > /tmp/unified_frontend_prod.log 2>&1 &
     FRONTEND_PID=$!
 
     # Wait for frontend to start (Vite can take 8-10 seconds)