Fix critical port conflict: move portfolio off Gitea's port 3000

Host port 3000 is Gitea (git.soroushasadi.com proxies to :3000). The
portfolio was publishing 3000:3000 AND the deploy had a "Free Port 3000"
step that force-removed every container on :3000 — which evicted the
Gitea container.

- compose: publish 3020:3000 instead of 3000:3000
- deploy: delete the "Free Port 3000" step entirely; compose recreates
  only our own named container and must never touch other stacks

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -11,8 +11,10 @@ services:
     image: soroushasadi-site:latest
     container_name: soroushasadi-site
     restart: unless-stopped
+    # Host port 3020 → container 3000. Port 3000 on the host is Gitea
+    # (git.soroushasadi.com proxies to :3000) — NEVER publish on 3000.
     ports:
-      - "3000:3000"
+      - "3020:3000"
     environment:
       ASPNETCORE_ENVIRONMENT: Production
       DataDir: /data