style: ruff's own fixes, mechanically applied

`ruff check .` had gone unrun long enough to report 568 errors, which is the
same as having no linter: the next real finding would have been invisible in the
noise. This is the 521 it fixes by itself, in 173 files, and nothing else — the
98 it cannot fix are the next commit.

What actually changed: import sorting (225), imports nobody used (87, none of
them a re-export — no `__init__.py` is touched, which was the one way this could
have broken an import elsewhere), `datetime.timezone.utc` to `datetime.UTC` (69)
and `asyncio.TimeoutError` to `TimeoutError` (18), both plain aliases on the 3.12
this project requires, `Optional[X]` to `X | None` (24), and f-strings with
nothing to interpolate (19).

Checked rather than assumed: every module in the three packages still imports,
and the suite is 2893 passed — the same count, test for test, as the merge
before it.

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

1 files changed, 6 insertions, 4 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/ops.py b/packages/meshbay-node/src/meshbay_node/ops.py
index ca1b87d..baea365 100644
--- a/packages/meshbay-node/src/meshbay_node/ops.py
+++ b/packages/meshbay-node/src/meshbay_node/ops.py
@@ -24,8 +24,8 @@ from __future__ import annotations
 
 import asyncio
 import logging
-import time as _time
 import re
+import time as _time
 from dataclasses import asdict
 from pathlib import Path
 from typing import Any
@@ -37,8 +37,9 @@ from meshbay_common.crypto import (
     unwrap_gek_aes,
     wrap_gek_aes,
 )
-from meshbay_node.config import DEFAULT_CONFIG_PATH
 from meshbay_common.join import ROLE_MEMBER, ROLE_OPERATOR
+
+from meshbay_node.config import DEFAULT_CONFIG_PATH
 from meshbay_node.roots import RootError, RootSet, off_disk
 from meshbay_node.roster import Roster
 
@@ -951,6 +952,7 @@ async def remove_root(state: dict, group_id: str, root_name: str) -> dict:
         raise OpError("Group not configured on this node", status=404)
 
     from meshbay_common.paths import fold
+
     from meshbay_node.roots import derive_name
     target = fold(root_name)
     match_idx = None
@@ -1001,6 +1003,7 @@ async def update_root(state: dict, group_id: str, root_name: str, *,
         raise OpError("Group not configured on this node", status=404)
 
     from meshbay_common.paths import fold
+
     from meshbay_node.roots import RootSet
     target = fold(root_name)
     match = None
@@ -1462,8 +1465,7 @@ async def list_transfers(state: dict) -> dict:
     ctx = getattr(webrtc, "_ctx", {}) if webrtc else {}
     slots = ctx.get("_transfer_slots")
     if slots is None:
-        from meshbay_node.transfers import (
-            DEFAULT_MAX_CONCURRENT, DEFAULT_MAX_PER_MEMBER, KINDS)
+        from meshbay_node.transfers import DEFAULT_MAX_CONCURRENT, DEFAULT_MAX_PER_MEMBER, KINDS
         # No pool built means nothing has transferred since the daemon started,
         # which is a real answer and not an error.
         #