fix(node): a removal made at the machine is in audit.db

The Node page and the CLI remove access through the loopback API, and
revoke and unpin there wrote nothing to audit.db; only the signed MNP door
did. A removed person's next connection then showed an auth_failed with
nothing before it to explain it. Both routes now record member_revoke and
member_unpin once the operation has succeeded, with the node's own account
as the actor and 127.0.0.1 as the address, which tells the two doors apart.
A refusal changes nothing and records nothing.

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

1 files changed, 27 insertions, 0 deletions

diff --git a/packages/meshbay-node/tests/test_roster_pairing.py b/packages/meshbay-node/tests/test_roster_pairing.py
index b2799e9..e2180ba 100644
--- a/packages/meshbay-node/tests/test_roster_pairing.py
+++ b/packages/meshbay-node/tests/test_roster_pairing.py
@@ -845,6 +845,33 @@ async def test_unpin_endpoint_allows_repairing(tmp_path, roster):
     assert client.post("/api/members/bob/unpin?t=tok").status_code == 404
 
 
+async def test_a_removal_at_the_machine_is_in_the_audit_log(tmp_path, roster):
+    """The Node page and the CLI remove through here; the signed WebRTC door
+    already wrote its own row, this one wrote none."""
+    from meshbay_node.audit import AuditStore
+
+    audit = AuditStore(db_path=tmp_path / "audit.db")
+    await audit.open()
+    try:
+        client, _ = _ui_client(tmp_path, roster, audit_store=audit)
+        _, pk_ed_b64, pk_x_b64 = _keypair()
+        await roster.pin_identity("bob", "bob", pk_ed_b64, pk_x_b64, "code")
+        await roster.set_member(GROUP, "bob", ROLE_MEMBER, "active", "grenet")
+
+        assert client.post(f"/api/members/bob/revoke?group_id={GROUP}&t=tok").status_code == 200
+        assert client.post("/api/members/bob/unpin?t=tok").status_code == 200
+        # A refusal changed nothing, so it records nothing.
+        assert client.post("/api/members/bob/unpin?t=tok").status_code == 404
+
+        rows = sorted(await audit.get_entries(), key=lambda e: e.id)
+        assert [(e.event, e.user_id, e.ip, e.group_id, e.detail) for e in rows] == [
+            ("member_revoke", "grenet", "127.0.0.1", GROUP, "bob"),
+            ("member_unpin", "grenet", "127.0.0.1", "", "bob"),
+        ]
+    finally:
+        await audit.close()
+
+
 async def test_operator_surface_needs_the_session_token(tmp_path, roster):
     """11.5.3 applies to every one of these: they change who may hold the key."""
     client, _ = _ui_client(tmp_path, roster)