Update dashboard community links to use env vars, add deploy configs

- Dashboard community links now use .env values like community page
- Removed hardcoded social media URLs from dashboard
- Added deploy folder with nginx and systemd service configs
- Moved linktree page to public route
- Various backend and auth context updates

deploy/front-end_nginx.conf

@@ -0,0 +1,90 @@
+# ============================================================
+# Spanglish Community - Frontend
+# spanglishcommunity.com / www
+# ============================================================
+
+server {
+    listen 80;
+    server_name spanglishcommunity.com www.spanglishcommunity.com;
+
+    # ACME
+    location /.well-known/acme-challenge/ {
+        root /var/www/html;
+    }
+
+    # Force HTTPS
+    location / {
+        return 301 https://spanglishcommunity.com$request_uri;
+    }
+}
+
+server {
+    listen 443 ssl;
+    http2 on;
+
+    server_name spanglishcommunity.com www.spanglishcommunity.com;
+
+    # SSL
+    ssl_certificate /etc/letsencrypt/live/spanglishcommunity.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/spanglishcommunity.com/privkey.pem;
+
+    include /etc/letsencrypt/options-ssl-nginx.conf;
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
+
+    # Security
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
+    # Logs
+    access_log /var/log/nginx/spanglish_frontend_access.log;
+    error_log  /var/log/nginx/spanglish_frontend_error.log;
+
+    # Proxy /api to backend
+    location /api {
+        proxy_pass http://spanglish_backend;
+        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;
+
+        proxy_read_timeout 300s;
+        proxy_connect_timeout 300s;
+    }
+
+    # Proxy /uploads to backend
+    location /uploads {
+        proxy_pass http://spanglish_backend;
+        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;
+
+        # Cache static files
+        proxy_cache_valid 200 1d;
+        expires 1d;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # Frontend App
+    location / {
+        proxy_pass http://spanglish_frontend;
+        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;
+
+        # WebSocket / HMR
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+
+        proxy_read_timeout 60s;
+        proxy_connect_timeout 60s;
+    }
+}