the-door/deploy/nginx.conf

# The Door — nginx config for alexanderwhitestone.com
# Place at /etc/nginx/sites-available/the-door
#
# Crisis front door: single URL, no login, always open.
# Static files + reverse proxy to Hermes Gateway on :8644
#
# Deploy:
#   cp nginx.conf /etc/nginx/sites-available/the-door
#   ln -sf /etc/nginx/sites-available/the-door /etc/nginx/sites-enabled/
#   rm -f /etc/nginx/sites-enabled/default
#   nginx -t && systemctl reload nginx

# HTTP → HTTPS redirect
server {
    listen 80;
    listen [::]:80;
    server_name alexanderwhitestone.com www.alexanderwhitestone.com;

    # Allow certbot ACME challenge even without SSL
    location /.well-known/acme-challenge/ {
        root /var/www/html;
        allow all;
    }

    location / {
        return 301 https://$server_name$request_uri;
    }
}

# Main HTTPS server
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name alexanderwhitestone.com www.alexanderwhitestone.com;

    # ================================================================
    # SSL Configuration
    # ================================================================

    ssl_certificate     /etc/letsencrypt/live/alexanderwhitestone.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/alexanderwhitestone.com/privkey.pem;

    # Modern SSL settings
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    # OCSP Stapling
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 1.1.1.1 8.8.8.8 valid=300s;
    resolver_timeout 5s;

    # ================================================================
    # Site Root
    # ================================================================

    root /var/www/the-door;
    index index.html;

    # ================================================================
    # Compression
    # ================================================================

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types
        text/plain
        text/css
        text/javascript
        application/javascript
        application/json
        application/manifest+json
        image/svg+xml;

    # ================================================================
    # Static files — the crisis front door
    # ================================================================

    location / {
        try_files $uri $uri/ /index.html;

        # Security headers
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-Frame-Options "DENY" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "no-referrer" always;
        add_header Content-Security-Policy "default-src 'self'; script-src 'unsafe-inline'; style-src 'unsafe-inline'; connect-src 'self'; img-src 'self' data:;" always;
        add_header Permissions-Policy "geolocation=(), microphone=(), camera=()" always;
        add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;

        # Cache static assets
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 7d;
            add_header Cache-Control "public, immutable";
            add_header X-Content-Type-Options "nosniff" always;
        }
    }

    # ================================================================
    # API proxy — /api/* → Hermes Gateway :8644
    # ================================================================

    location /api/ {
        proxy_pass http://127.0.0.1:8644/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # CORS — allow alexanderwhitestone.com origins
        set $cors_origin "";
        if ($http_origin ~* "^https://(www\.)?alexanderwhitestone\.com$") {
            set $cors_origin $http_origin;
        }
        add_header Access-Control-Allow-Origin "$cors_origin" always;
        add_header Access-Control-Allow-Methods "GET, POST, OPTIONS" always;
        add_header Access-Control-Allow-Headers "Authorization, Content-Type" always;
        add_header Access-Control-Allow-Credentials "true" always;

        # Handle OPTIONS preflight
        if ($request_method = OPTIONS) {
            add_header Access-Control-Allow-Origin "$cors_origin";
            add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
            add_header Access-Control-Allow-Headers "Authorization, Content-Type";
            add_header Access-Control-Max-Age 86400;
            return 204;
        }

        # SSE streaming support
        proxy_set_header Connection '';
        proxy_buffering off;
        proxy_cache off;
        chunked_transfer_encoding on;
        proxy_read_timeout 300s;

        # Rate limiting — 10 req/min per IP, burst of 5
        # Zone defined in nginx http block — see deploy/rate-limit.conf
        limit_req zone=the_door_api burst=5 nodelay;
        limit_req_status 429;
    }

    # ================================================================
    # Health check — passthrough to Hermes
    # ================================================================

    location = /health {
        proxy_pass http://127.0.0.1:8644/health;
        proxy_http_version 1.1;
        access_log off;
    }

    # ================================================================
    # Block dotfiles (except .well-known)
    # ================================================================

    location ~ /\.(?!well-known) {
        deny all;
        return 404;
    }
}