Fix nginx config for certbot workflow

- Remove SSL block that referenced non-existent certificates
- HTTP-only config passes nginx -t before certbot
- Certbot --nginx will add SSL configuration automatically

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deploy/nginx/hub.conf

@@ -1,45 +1,13 @@
 # LetsBe Hub - Nginx Configuration
 # Place this in /etc/nginx/sites-available/hub.conf
 # Then: ln -s /etc/nginx/sites-available/hub.conf /etc/nginx/sites-enabled/
-# And: nginx -t && systemctl reload nginx
+# Then: nginx -t && systemctl reload nginx
+# Then: certbot --nginx -d hub.letsbe.solutions
 
-# Redirect HTTP to HTTPS
 server {
     listen 80;
     listen [::]:80;
-    server_name hub.yourdomain.com;
+    server_name hub.letsbe.solutions;
-
-    location /.well-known/acme-challenge/ {
-        root /var/www/certbot;
-    }
-
-    location / {
-        return 301 https://$host$request_uri;
-    }
-}
-
-# HTTPS server
-server {
-    listen 443 ssl http2;
-    listen [::]:443 ssl http2;
-    server_name hub.yourdomain.com;
-
-    # SSL certificates (Let's Encrypt)
-    ssl_certificate /etc/letsencrypt/live/hub.yourdomain.com/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/hub.yourdomain.com/privkey.pem;
-
-    # 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;
-    ssl_prefer_server_ciphers off;
-    ssl_session_cache shared:SSL:10m;
-    ssl_session_timeout 1d;
-
-    # Security headers
-    add_header X-Frame-Options "SAMEORIGIN" always;
-    add_header X-Content-Type-Options "nosniff" always;
-    add_header X-XSS-Protection "1; mode=block" always;
-    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
 
     # Logging
     access_log /var/log/nginx/hub.access.log;
@@ -64,13 +32,13 @@ server {
         # Timeouts (longer for SSE streams)
         proxy_connect_timeout 60s;
         proxy_send_timeout 60s;
-        proxy_read_timeout 300s;  # 5 min for SSE log streaming
+        proxy_read_timeout 300s;
 
         # Buffering (disable for SSE)
         proxy_buffering off;
         proxy_cache off;
 
-        # Max body size (for file uploads if needed)
+        # Max body size
         client_max_body_size 50M;
     }
 }