_headers

/*
  X-Frame-Options: SAMEORIGIN
  X-Content-Type-Options: nosniff
  X-XSS-Protection: 1; mode=block
  Referrer-Policy: strict-origin-when-cross-origin
  Permissions-Policy: geolocation=(), microphone=(), camera=(), payment=()
  Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src https://fonts.gstatic.com; img-src 'self' data: https:; connect-src 'self'; worker-src 'self'; manifest-src 'self'

# Immutable long-cache for fingerprinted/versioned static assets
/assets/*
  Cache-Control: public, max-age=31536000, immutable

/icons/*
  Cache-Control: public, max-age=31536000, immutable

# Favicon — moderate TTL (changes rarely)
/favicon.svg
  Cache-Control: public, max-age=86400

# PWA manifest — moderate TTL
/manifest.json
  Cache-Control: public, max-age=86400

# Service worker — must always revalidate
/sw.js
  Cache-Control: no-cache, no-store, must-revalidate

# HTML pages — short cache, always revalidate
/*.html
  Cache-Control: public, max-age=0, must-revalidate

/
  Cache-Control: public, max-age=0, must-revalidate