style: ruff's own fixes, mechanically applied

2026-09-19T12:24:13Z

`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

chore(node): finish Phase 3 — CLI deprecations, Windows shapes, docs

2026-09-06T22:58:37Z

`member upload` reached the generic usage line for the other `member` verbs — "usage: meshbay-node member upload " — which advertises a removed feature and sends the operator looking for a username it would then reject. It names `root set --writable` now, and the man page carries the same. Three lines between an operator finding the replacement and concluding the CLI is broken. `--upload-dir` still works, so an existing script keeps working, but its help and the man page say it is the old spelling and name what replaced it. The Windows pass (§4.4) is what can be checked from here, made checkable: drive letters and UNC through `as_posix()` into TOML, a drive root having no basename to derive a name from — sharing a whole drive is ordinary there — and a case-insensitive collision, which on NTFS and exFAT is one directory indexed as two roots. `PureWindowsPath` throughout, for the reason the backslash test earlier this branch got wrong. What it cannot check is written down rather than glossed: ReadDirectoryChangesW dropping events, MAX_PATH, and whether an eject actually lets a drive be removed. §7d says so, along with two things the plan never considered — the RO/RW asymmetry in `_do_dir_delete`, and `index_delta` carrying roots but not `dirs`. Co-Authored-By: Claude Opus 5 Claude-Session: https://claude.ai/code/session_011pvMdvLBG92jyhvD5pD6us

meshbay.git/packages/meshbay-node/tests/test_windows_root_shapes.py, branch 0.15

style: ruff's own fixes, mechanically applied

chore(node): finish Phase 3 — CLI deprecations, Windows shapes, docs