platform: preserve GX10 Traefik client source IP

gx10/platform/README.md

@@ -8,7 +8,7 @@ auto-deploy them there. Once ArgoCD is stood up on the GX10, a GX10-only
 ApplicationSet (`apps-gx10/*`) will own these.
 
 - `step-ca-acme.yaml` — cert-manager ClusterIssuer (ACME → noc1 step-ca, in-spec caBundle). APPLIED + Ready.
-- `traefik-helmchart.yaml` — Traefik v3.6.10 (chart 39.0.5) via the RKE2 HelmChart CRD, LoadBalancer VIP 10.0.57.202 (prod-pool; temp parallel-run VIP — canonical .200 reclaimed at cutover). APPLIED.
+- `traefik-helmchart.yaml` — Traefik v3.6.10 (chart 39.0.5) via the RKE2 HelmChart CRD, LoadBalancer VIP 10.0.57.202 (prod-pool; temp parallel-run VIP — canonical .200 reclaimed at cutover), with `externalTrafficPolicy: Local` so tenant IP allowlists see client source IP instead of the GX10 node hop. APPLIED.
 
 cert-manager v1.17.2 was installed separately (upstream static manifest). See
 `docs/ai-agents/gx10-migration-continuation-2026-06-14.md` + memory

gx10/platform/traefik-helmchart.yaml

@@ -27,6 +27,8 @@ spec:
       enabled: true
     service:
       type: LoadBalancer
+      spec:
+        externalTrafficPolicy: Local
       annotations:
         metallb.io/loadBalancerIPs: "10.0.57.202"
         metallb.io/address-pool: "prod-pool"