Remove internal notification caller tokens

backend/notifications/interface/README.md

@@ -20,14 +20,14 @@ Internal Go consumers use the module
 `git.sendico.io/tech/sxchnge/notifications/interface/notifications/v1`. Within this
 checkout, use a local replace to this directory and generate before building.
 
-Calls require TLS and `authorization: Bearer <service-token>` metadata. The service
-maps tokens to configured caller identities. Callers authorize user/destination
+Calls use the trusted private network without caller authentication. The service
+uses the existing product storage namespace. Callers authorize user/destination
 ownership and preferences before sending; this contract is not a public user API.
 
 Parameters are string values keyed by template parameter name. The entire request
 is validated before persistence. An identical idempotency key/request returns the
 original resource, even after completion or expiry. A changed request conflicts.
-Keys are scoped to the authenticated caller and retained at least seven days;
+Keys are scoped to the product namespace and retained at least seven days;
 Mongo TTL deletion is asynchronous. Expiry defaults to 24 hours and cannot exceed
 24 hours. One email target is accepted; other declared channels return UNIMPLEMENTED.