style: the 98 ruff could not fix, so the linter is a signal again

The pass before this applied ruff's own fixes. These are the ones needing a
decision, and the point of doing them is that `ruff check .` now passes: a
linter reporting 98 known-acceptable findings reports nothing, because the next
real one arrives invisible.

**Lines over 100 (70).** Mostly wrapped where they stood. Two exceptions: the
aligned trailing comments in `protocol.py`'s message table were shortened rather
than wrapped, because wrapping one row of a table breaks the table; and in
`models.py` the column comments moved above their columns for the same reason.

**Imports below the first statement (14).** `csam.py` kept its FastAPI imports
under a section header halfway down the file; two node tests had a constant and
a `pytestmark` wedged between two import blocks. Moved, not suppressed.

**Bindings nothing reads (4).** Three in tests, where the call stays and only the
name goes — `_user(client, "listener")` is there to create the user, not to
return one. The fourth was in `revocation.py` and was not a lint finding at all:
`_connect_and_listen` opened an httpx stream to the WebSocket URL, did `pass`,
and then opened the real connection through the `websockets` library. One
pointless request per connect, left over from before that library was used
directly. Removed, and `httpx` with it.

**`l` as a name (4)**, **semicolons (6)** in the POC spikes, and the rest.

2893 passed, the same count as the two commits before it.

`meshbay_node/revocation.py` is worth a decision separately: 154 lines that
nothing imports, superseded by `hub_client.maintain_ws`'s `on_revocation`. This
commit only stopped it failing the linter.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 9 insertions, 10 deletions

diff --git a/packages/meshbay-node/tests/test_webrtc_transport.py b/packages/meshbay-node/tests/test_webrtc_transport.py
index 4aba99f..91a6e1c 100644
--- a/packages/meshbay-node/tests/test_webrtc_transport.py
+++ b/packages/meshbay-node/tests/test_webrtc_transport.py
@@ -26,6 +26,11 @@ from cryptography.hazmat.primitives.asymmetric.ed25519 import (
     Ed25519PublicKey,
 )
 from meshbay_common import MNP_VERSION
+from meshbay_common.adminop import (
+    OP_FILE_DELETE,
+    OP_INVITE_CREATE,
+    admin_transcript,
+)
 from meshbay_common.crypto import (
     generate_gek,
     pk_to_b64,
@@ -35,16 +40,6 @@ from meshbay_common.crypto import (
     wrap_gek_aes,
 )
 from meshbay_common.groupbox import PURPOSE_ACK, PURPOSE_INDEX, unseal
-from meshbay_common.protocol import MNP
-from meshbay_common.webcrypto import chunk_key_aes, decrypt_chunk_aes
-
-TEST_GROUP = "g"
-
-from meshbay_common.adminop import (
-    OP_FILE_DELETE,
-    OP_INVITE_CREATE,
-    admin_transcript,
-)
 from meshbay_common.handshake import (
     NONCE_LEN,
     ROLE_CLIENT,
@@ -55,6 +50,8 @@ from meshbay_common.handshake import (
     webrtc_binding,
 )
 from meshbay_common.join import ROLE_MEMBER, ROLE_OPERATOR, join_transcript
+from meshbay_common.protocol import MNP
+from meshbay_common.webcrypto import chunk_key_aes, decrypt_chunk_aes
 from meshbay_node.bundle_store import BundleStore
 from meshbay_node.indexer import DirectoryIndexer
 from meshbay_node.roster import Roster
@@ -62,6 +59,8 @@ from meshbay_node.transport.webrtc_server import WebRTCTransport
 
 from conftest import one_root
 
+TEST_GROUP = "g"
+
 
 @pytest.fixture
 def sk_node():