Improve operator CRM flows and UI

gateway/app.py

@@ -157,6 +157,13 @@ SERVICE_URLS = {
 }
 
 
+def _env_flag(name: str, default: bool = False) -> bool:
+    value = os.getenv(name)
+    if value is None:
+        return default
+    return value.strip().lower() in {"1", "true", "yes", "on"}
+
+
 @app.get("/health", response_model=HealthResponse)
 def health() -> HealthResponse:
     return HealthResponse(status="ok", service="api-gateway")
@@ -179,6 +186,15 @@ def registry() -> dict:
     return {"services": SERVICE_URLS}
 
 
+@app.get("/operator/config")
+def operator_ui_config() -> dict[str, Any]:
+    return {
+        "features": {
+            "whatsapp": _env_flag("OPERATOR_WHATSAPP_ENABLED", default=False),
+        }
+    }
+
+
 @app.get("/contracts")
 def contracts() -> dict:
     return {