docs: state current behaviour without change-log wording

docs/integrations/matrix.md

@@ -220,7 +220,7 @@ appearing; the sweep then overwrites the per-hive file, no boot
 required.
 
 <!-- vale write-good.Passive = NO -->
-- **Room membership follows the account the sweep currently uses.**
+- **Room membership is per account.**
   `ensure_hive_space` takes the stored room id first: if a different
   account than the room's member created that id, the sweep's invite
   comes back refused (a non-member can't invite), and the sweep logs it
@@ -228,27 +228,25 @@ required.
   operator-chosen: invite `@hive-<hive>:` into the existing Space and
   chat room from a client, which keeps the history; or delete the
   hive's stored room-id files, after which the next sweep creates a
-  Space and chat room owned by the current account and invites every
+  Space and chat room owned by the hive's sender account and invites every
   agent into them. Leaving it unresolved gives a hive that provisions
   no rooms.
 <!-- vale write-good.Passive = YES -->
 
 </details>
 
-<details><summary>Appservice identity, not the registration token</summary>
+<details><summary>Appservice identity</summary>
 
 The activation script mints the appservice token and renders the
 registration before the homeserver restarts, so every boot has both
-halves. `registrationTokenFile` is a removed option: a config that
-still sets it fails to evaluate with a message naming the appservice.
+halves.
 
 <!-- vale write-good.Passive = NO -->
 - **Access tokens live on the device that minted them.**
   `login_with_password` stays on, so the password fallback works
   too.
 - **The homeserver's `admin_execute` promotes only `@swarm` at boot**
-  (above); a hive's sender account is never promoted, regardless of
-  when it was created.
+  (above); a hive's sender account is never promoted.
 - **The value that matters lives at `matrix/appservice-token`.**
   `swarm-secret-publish` on the authelia host mints and `put`s it
   there; the hive uses its locally minted token only until the first