Add PROXY_SECRET for IBM i proxy auth

apps/erp-integration/config.json

@@ -88,6 +88,15 @@
       "required": false,
       "default": "",
       "env_variable": "CONTEXT_ROOT"
+    },
+    {
+      "type": "password",
+      "label": "Proxy Auth Secret",
+      "hint": "Shared secret for trusted reverse proxy authentication (X-Proxy-Secret header). Leave empty to allow unauthenticated access.",
+      "required": false,
+      "env_variable": "PROXY_SECRET",
+      "min": 0,
+      "max": 200
     }
   ]
 }

apps/erp-integration/docker-compose.yml

@@ -22,6 +22,7 @@ services:
       - OLLAMA_MODEL=${OLLAMA_MODEL}
       - OLLAMA_API_KEY=${OLLAMA_API_KEY}
       - CONTEXT_ROOT=${CONTEXT_ROOT}
+      - PROXY_SECRET=${PROXY_SECRET}
     healthcheck:
       test: curl --fail http://localhost:8001$${CONTEXT_ROOT}/api/health || exit 1
       interval: 30s