feat(pitch-deck): HTTPS via Nginx reverse proxy on port 3012

- Add Nginx SSL server block for pitch-deck on port 3012
- Route through Nginx instead of direct container port
- Restore secure cookie flag (requires HTTPS)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

nginx/conf.d/default.conf

@@ -760,3 +760,33 @@ server {
         try_files $uri $uri/ /index.html;
     }
 }
+
+# =========================================================
+# PITCH DECK: Investor Presentation on port 3012
+# =========================================================
+server {
+    listen 3012 ssl;
+    http2 on;
+    server_name macmini localhost;
+
+    ssl_certificate /etc/nginx/certs/macmini.crt;
+    ssl_certificate_key /etc/nginx/certs/macmini.key;
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256;
+    ssl_prefer_server_ciphers off;
+
+    location / {
+        set $upstream_pitch bp-core-pitch-deck:3000;
+        proxy_pass http://$upstream_pitch;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        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 https;
+        proxy_read_timeout 300s;
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 300s;
+    }
+}