fix: harden SeaweedFS storage and fix Drive presigned uploads

- SeaweedFS filer: Recreate strategy (prevents LevelDB lock contention),
  60s termination grace period, memory 256Mi→2Gi limit
- SeaweedFS volume: 60s termination grace period, memory 256Mi→1Gi limit
- Drive: add AWS_S3_DOMAIN_REPLACE so presigned upload URLs use
  s3.sunbeam.pt instead of internal cluster DNS
- Drive: relax liveness/readiness probes (failureThreshold 1→3,
  period 1s→10s, timeout 1s→5s) to prevent crash loops under load

base/storage/seaweedfs-volume.yaml

@@ -14,6 +14,7 @@ spec:
       labels:
         app: seaweedfs-volume
     spec:
+      terminationGracePeriodSeconds: 60
       containers:
         - name: volume
           image: chrislusf/seaweedfs:latest
@@ -35,9 +36,9 @@ spec:
               mountPath: /data
           resources:
             limits:
-              memory: 256Mi
+              memory: 1Gi
             requests:
-              memory: 128Mi
+              memory: 256Mi
               cpu: 50m
   volumeClaimTemplates:
     - metadata: