feat(dlob): support two sources + per-user switch

- Add "source" column + composite PKs for DLOB tables\n- Filter public Hasura selects by X-Hasura-Dlob-Source\n- Run parallel workers for mevnode + dlob.drift.trade\n- Frontend proxy sets x-hasura-dlob-source from cookie and injects UI switch

kustomize/overlays/staging/dlob-worker-patch.yaml

@@ -1,16 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: dlob-worker
-spec:
-  template:
-    spec:
-      hostNetwork: true
-      dnsPolicy: ClusterFirstWithHostNet
-      containers:
-        - name: worker
-          env:
-            - name: DLOB_HTTP_URL
-              value: https://dlob.drift.trade
-            - name: DLOB_FORCE_IPV6
-              value: "true"

kustomize/overlays/staging/kustomization.yaml

@@ -14,7 +14,6 @@ patchesStrategicMerge:
   - frontend-auth-patch.yaml
   - frontend-graphql-proxy-patch.yaml
   - ingestor-dlob-patch.yaml
-  - dlob-worker-patch.yaml
 
 configMapGenerator:
   - name: trade-dlob-ingestor-script