_headers

# ── Security Headers (Netlify CDN layer) ──
# Mirrors server.js security headers for production edge delivery

/*
  Content-Security-Policy: default-src 'none'; script-src 'self'; style-src 'self'; img-src 'self' data: blob:; media-src 'self' blob:; font-src 'self'; connect-src 'self'; form-action 'none'; base-uri 'self'; frame-ancestors 'none'; upgrade-insecure-requests
  X-Frame-Options: DENY
  X-Content-Type-Options: nosniff
  X-XSS-Protection: 1; mode=block
  Referrer-Policy: no-referrer
  Permissions-Policy: accelerometer=(), ambient-light-sensor=(), autoplay=(self), battery=(), camera=(), cross-origin-isolated=(), display-capture=(), document-domain=(), encrypted-media=(), execution-while-not-rendered=(), execution-while-out-of-viewport=(), fullscreen=(self), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), navigation-override=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), sync-xhr=(), usb=(), web-share=(), xr-spatial-tracking=()
  Cross-Origin-Opener-Policy: same-origin
  Cross-Origin-Resource-Policy: same-origin
  X-DNS-Prefetch-Control: off

# Service worker must be served from root with no cache
/sw.js
  Cache-Control: no-cache, no-store, must-revalidate
  Service-Worker-Allowed: /