matrix, docs: describe promotion/reset as rehomed, not as a pending fix

Both spots hedged the swarm-level framing with a temporal qualifier
("until then", "today") that read as future work awaiting a fix, on
top of the framing itself. Drops the qualifiers; the operations are
swarm-level and rehomed there now, not pending anything from the hive.

docs/tools/hivectl.md

@@ -79,12 +79,13 @@ hivectl matrix invite @mara:server --room '#hive-chat:server'  # ...or to a spec
   access token path. Safe to run again — idempotent.
 - `promote-user`: promotes an already-registered user to homeserver
   admin by an `!admin` command in `#admins`. ⚠️ Needs an admin **sender**,
-  which `@hive:` isn't — this operation is being rehomed at swarm level
-  and doesn't work from the hive today.
+  which `@hive:` isn't — promotion is a swarm-level operation, rehomed to
+  the swarm tier rather than granted here, so it has no admin sender to
+  call it with from the hive.
 - `reset-password`: asks the admin room to set a new random
-  password and prints it to stdout. ⚠️ Needs an admin **sender** too, so
-  it doesn't work from the hive today either. Useful if an agent or human lost
-  credentials.
+  password and prints it to stdout. ⚠️ Same admin-**sender** requirement,
+  and the same swarm-level rehoming, so it's unavailable from the hive
+  too. Useful if an agent or human lost credentials.
 - `invite`: invites a matrix user (full `@user:server` or a bare
   localpart, qualified with the homeserver's `server_name`) to the hive
   Space by default, or to a `--room` id / `#alias`. Uses the sender