drop the hive-side matrix code: sweep, hivectl matrix and the apiUrl option

docs/tools/hivectl.md

@@ -10,8 +10,8 @@ login user in `services.hyperhive.c0re.adminUsers` (adds you to the
 Available via the `hive-c0re` package in the host NixOS config.
 
 Unlike the `hive-c0re` daemon subcommands (which go through the broker),
-`hivectl` covers direct host-side administration: manual provisioning of
-matrix accounts, container lifecycle shortcuts, and interactive agent shell access.
+`hivectl` covers direct host-side administration: container lifecycle
+shortcuts and interactive agent shell access.
 
 This page is the curated guide. For the exhaustive flag-by-flag
 reference autogenerated from the binary's own command tree, see
@@ -42,26 +42,6 @@ hivectl forge reconcile-config iris --verbose      # include the full diff, not
   supported yet (forge `main` is branch-protected; resolve via a config
   PR). With no `--from` it prompts for the direction after the diff.
 
-## Matrix
-
-Manual invites into a room. Requires the `hive-matrix` container to be
-running (`services.hyperhive.deploy.matrix.enable = true`).
-
-```bash
-hivectl matrix invite mara --room '#some-room:server'   # a room alias
-hivectl matrix invite @mara:server --room '!abc:server' # ...or a room id
-```
-
-Human matrix accounts come from SSO, not `hivectl`; matrix homeserver
-admin should eventually come from membership in authelia's `admins`
-group; nobody has built that sync yet.
-
-- `invite`: invites a matrix user (full `@user:server` or a bare
-  localpart, qualified with the homeserver's `server_name`) to the
-  `--room` id / `#alias`. Uses the sender token; the account must be a
-  member of the target room with invite power.
-  Idempotent — already-member / already-invited is a no-op.
-
 ## Agents
 
 Container lifecycle shortcuts that go through the host admin socket.