test(vpn): use port 8080 (avoid home 1197 return-path conflict), live servers

Co-Authored-By: Claude Opus 4.8 <[email protected]>

platform/vpn-egress/gluetun-gateway.yaml

@@ -53,6 +53,10 @@ spec:
               value: "private internet access"
             - name: VPN_TYPE
               value: "openvpn"               # OpenVPN-UDP — satisfies "protocol != TCP" (R-NET); ADR-0013 amended
+            - name: OPENVPN_ENDPOINT_PORT
+              value: "8080"                  # NOT 1197: with live servers, PIA's replies FROM src-port 1197 get
+                                             # no return here — the home OpenVPN server / port-forward on 1197
+                                             # appears to swallow them. 8080 avoids that (PIA serves it too).
             # Fresh server list comes from the update-servers initContainer (see above). UPDATER_PERIOD then
             # keeps it fresh for long-running pods (gluetun docs: >=360h to be nice to the provider API):
             - name: UPDATER_PERIOD