Fix minio healthcheck and remove rollupcreator sequencer dependency

- minio healthcheck: replace curl (not in image) with mc ready local
- rollupcreator: remove depends_on sequencer (service_healthy) — the
  sequencer config doesn't exist yet during init, and rollupcreator
  only needs L1 (geth) to deploy contracts

Both found during integration testing with --l2-tx-filtering.

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

Author: joshuacolvin0

docker-compose.yaml

@@ -462,8 +462,6 @@ services:
     depends_on:
       geth:
         condition: service_healthy
-      sequencer:
-        condition: service_healthy
     pid: host
     build:
       context: rollupcreator/
@@ -603,7 +601,8 @@ services:
       MINIO_ROOT_PASSWORD: minioadmin
     command: server /data --console-address ":9001"
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
+      # minio image ships mc (not curl)
+      test: ["CMD", "mc", "ready", "local"]
       interval: 5s
       timeout: 5s
       retries: 5