Add browser start page for all hosted projects.

Static nginx site with grouped links, search filter, and 0012.de-inspired styling.

Co-authored-by: Cursor <cursoragent@cursor.com>

compose.yml

@@ -0,0 +1,20 @@
+services:
+
+  startschwenkonline:
+    image: nginx
+    restart: unless-stopped
+    volumes:
+      - .:/usr/share/nginx/html:ro
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+    container_name: startschwenkonline
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.startschwenkonline.rule=Host(`start.schwenk.online`)"
+      - "traefik.http.routers.startschwenkonline.entrypoints=websecure"
+      - "traefik.http.routers.startschwenkonline.tls.certresolver=myresolver"
+    networks:
+      - traefik
+
+networks:
+  traefik:
+    external: true