Fix Traefik routing: only handle subdomains

- Use unique router name 'rspace-canvas' to avoid conflict with rspace-prod
- Only match subdomains, explicitly exclude main domain
- rspace-prod handles rspace.online landing page
- rspace-online handles *.rspace.online canvas

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.yml

@@ -11,14 +11,12 @@ services:
       - PORT=3000
     labels:
       - "traefik.enable=true"
-      # Main domain (use web entrypoint - Cloudflare handles SSL)
-      - "traefik.http.routers.rspace.rule=Host(`rspace.online`) || Host(`www.rspace.online`)"
-      - "traefik.http.routers.rspace.entrypoints=web"
-      # Wildcard subdomain routing
-      - "traefik.http.routers.rspace-wildcard.rule=HostRegexp(`{subdomain:[a-z0-9-]+}.rspace.online`)"
-      - "traefik.http.routers.rspace-wildcard.entrypoints=web"
+      # Only handle subdomains (rspace-prod handles main domain)
+      - "traefik.http.routers.rspace-canvas.rule=HostRegexp(`{subdomain:[a-z0-9-]+}.rspace.online`) && !Host(`rspace.online`) && !Host(`www.rspace.online`)"
+      - "traefik.http.routers.rspace-canvas.entrypoints=web"
+      - "traefik.http.routers.rspace-canvas.priority=100"
       # Service configuration
-      - "traefik.http.services.rspace.loadbalancer.server.port=3000"
+      - "traefik.http.services.rspace-canvas.loadbalancer.server.port=3000"
       - "traefik.docker.network=traefik-public"
     networks:
       - traefik-public