Initial commit: PastPaper Master full stack

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

frontend/nginx.conf

@@ -0,0 +1,27 @@
+server {
+    listen 80;
+    server_name pastpaper.knowit.top;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # SPA fallback
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # API proxy to backend
+    location /api/ {
+        proxy_pass http://backend:8000/api/;
+        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_read_timeout 300s;
+        client_max_body_size 50M;
+    }
+
+    # Health check proxy
+    location /health {
+        proxy_pass http://backend:8000/health;
+    }
+}