feat: The Other Dude v9.0.1 — full-featured email system

ci: add GitHub Pages deployment workflow for docs site

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

infrastructure/docker/nginx-spa.conf

@@ -0,0 +1,56 @@
+server {
+    listen 80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Security headers (server-level -- inherited by all locations unless overridden)
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "0" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
+
+    # CSP for React SPA with Tailwind CSS and Leaflet maps
+    # worker-src required for SRP key derivation Web Worker (Safari won't fall back to script-src)
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https://*.tile.openstreetmap.org; font-src 'self'; connect-src 'self'; worker-src 'self'; frame-ancestors 'none'; base-uri 'self'; form-action 'self';" always;
+
+    # Proxy API requests to the backend service
+    # The api container is reachable via Docker internal DNS as "api" on port 8000
+    location /api/ {
+        proxy_pass http://api:8000/api/;
+        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 $scheme;
+        # Disable buffering for streaming/SSE endpoints
+        proxy_buffering off;
+        proxy_read_timeout 300s;
+        # Hide nginx server-level CSP — backend sets its own CSP on API responses
+        proxy_hide_header Content-Security-Policy;
+    }
+
+    # Serve static assets with long cache headers
+    # Note: add_header in a location block clears parent-block headers,
+    # so we re-add the essential security header for static assets.
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable" always;
+        add_header X-Content-Type-Options "nosniff" always;
+        try_files $uri =404;
+    }
+
+    # SPA routing: all other requests serve index.html
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Health check endpoint for container probes
+    location /nginx-health {
+        access_log off;
+        return 200 "OK\n";
+        add_header Content-Type text/plain;
+    }
+}