feat(mail): enforce owned profile self-service

README.md

@@ -11,7 +11,7 @@ GovOPlaN Mail is the mail transport module. It owns reusable SMTP/IMAP profile m
 This repository owns:
 
 - backend module manifest `mail`
-- mail permissions such as `mail:profile:read`, `mail:profile:write`, `mail:profile:use`, `mail:profile:test`, and `mail:mailbox:read`
+- mail permissions such as `mail:profile:read`, `mail:profile:write_own`, `mail:profile:write`, `mail:profile:use`, `mail:profile:test`, and `mail:mailbox:read`
 - SMTP/IMAP profile models, policy checks, encrypted credential storage, and profile resolution
 - SMTP send and IMAP append adapters, including mock transports for development
 - development mock mailbox endpoints used by test-send flows
@@ -55,6 +55,16 @@ a non-secret audit event. Destructive module retirement applies the same rule
 to every remaining profile before any Mail table is dropped; a scrub or audit
 failure blocks retirement.
 
+Personal profile self-service is a distinct authorization path. An actor with
+`mail:profile:write_own` can mutate only a user-scoped profile whose scope id is
+their current tenant membership id; `mail:secret:manage_own` applies the same
+ownership check to credentials. Neither scope permits profile-policy changes or
+management of tenant, group, campaign, system, or another user's profiles.
+Changing an SMTP/IMAP endpoint while a stored password remains is a secret
+operation and requires the matching credential permission. Deactivating a
+credential-free profile needs only profile-write authority; if a password will
+be scrubbed, credential authority is required and the deletion is audited.
+
 ## Development
 
 Install through the core environment: