fix(netpol): allow external egress (ports 80/443) for API websockets

Data service needs to reach Helius WSS, Solana RPC, Jupiter API,
Hyperliquid — all external. Network policy had no egress rule for
external traffic, so all API/websocket connections were blocked.

apps/base/customer1/trading-platform/network-policies/trading-network-policies.yaml

@@ -135,3 +135,10 @@ spec:
           protocol: TCP
         - port: 8003
           protocol: TCP
+    # Allow external HTTPS/WSS (Helius, Solana, Jupiter, Hyperliquid APIs)
+    - to: []
+      ports:
+        - port: 443
+          protocol: TCP
+        - port: 80
+          protocol: TCP