fix(node): name members admitted without an invitation name

A member who joined by link, by a new device or into an open group was
pinned in the roster with no name, so the audit log showed only the
first characters of their id. The hub's MNP token now carries the
account's username, and after the handshake the node writes it into the
roster for an account whose name is empty. An invitation's name is never
overwritten; the name is a label, authority stays on `sub`.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/transport/webrtc/admission.py b/packages/meshbay-node/src/meshbay_node/transport/webrtc/admission.py
index 20ebc79..fd9c756 100644
--- a/packages/meshbay-node/src/meshbay_node/transport/webrtc/admission.py
+++ b/packages/meshbay-node/src/meshbay_node/transport/webrtc/admission.py
@@ -380,9 +380,8 @@ class AdmissionMixin:
             return
 
         await self._pin_and_admit(
-            # The name comes from the invitation, not from the token: the hub does
-            # not put a username claim in a JWT, so pinning from the session alone
-            # left the roster nameless and `member revoke <name>` unable to match.
+            # The invitation's name first: it is the person the operator meant.
+            # The token's name covers an invitation that carries none.
             roster, user_id, invite["username"] or username, pk_ed_b64, pk_x_b64,
             group_id=invite["group_id"], role=invite["role"],
             approved_by=invite["created_by"],