Critical Fixes:
- Registration routes: changed /shipper → /register/shipper, /driver → /register/driver
(was causing 404s — landing page linked to /register/* but routes were /shipper and /driver)
- Registration form actions: fixed to match /register/shipper and /register/driver
- Removed duplicate /payments route mount in server.js (payments.js is escrow, mounted at /escrow)
- Supabase client: now uses service key (falls back to anon key)
- Created missing pages/errors/403.ejs view
Documentation:
- README.md: full project documentation
- .env.example: environment variable template
- .dockerignore: exclude dev files from Docker image
