feat: webowa wersja Video & Sound Downloader Pro (NestJS + React)

Odwzorowanie desktopowego v6.5.6: tryby MP3/MP4/PLAYLISTA/FACEBOOK,
jakość/format, napisy, log na żywo (SSE), STOP. Docker + Gitea CI/CD,
deploy na videodownloader.naurecki.pl.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/web/nginx.conf

@@ -0,0 +1,25 @@
+server {
+    listen 80;
+    server_name _;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # API + SSE (strumień logów) — bez buforowania, długie timeouty na pobieranie
+    location /api/ {
+        proxy_pass http://api:3000;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header Connection '';
+        proxy_buffering off;
+        proxy_cache off;
+        proxy_read_timeout 3600s;
+        proxy_send_timeout 3600s;
+        chunked_transfer_encoding off;
+    }
+
+    # SPA fallback
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}