chore(devops): patient web app in docker compose — the jury needs only Docker

Requirement: no extra software beyond the regulated set. The web app is built in a Node stage and served by
nginx (:8080, /api → app, SSE unbuffered); the server override keeps it off (host nginx serves the bundle).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/nginx.conf

@@ -0,0 +1,18 @@
+# Same-origin API: the app calls /api/v1/... — proxied to the FastAPI container (SSE streaming unbuffered).
+server {
+    listen 80;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    location /api/ {
+        proxy_pass http://app:8000;
+        proxy_set_header Host $host;
+        proxy_http_version 1.1;
+        proxy_buffering off;
+        proxy_read_timeout 120s;
+    }
+}