_headers

# NOTE: As of v3.0.1 the security headers are also served via <meta http-equiv>
# tags in every HTML page (see scripts/check-csp-meta.sh). This file remains
# for completeness when this site is mirrored to a CDN that honours _headers
# (Netlify, Cloudflare Pages). GitHub Pages itself ignores _headers — the
# <meta> tags are the operative defence on the live site.

/*
  X-Frame-Options: DENY
  X-Content-Type-Options: nosniff
  X-XSS-Protection: 1; mode=block
  Referrer-Policy: strict-origin-when-cross-origin
  Permissions-Policy: camera=(), microphone=(), geolocation=()
  Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https://api.github.com; frame-ancestors 'none'; base-uri 'self'; form-action 'self'