meshbay.git/packages/meshbay-common/src/meshbay_common/keyderive.py, branch main

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

feat: password-based key derivation + operational QUICKSTART

2026-08-09T12:50:22Z

keyderive.py: derive Ed25519+X25519 from username+password via Argon2id. Same credentials → same keys on any device. Encrypt/decrypt keypair bundle (AES-256-GCM) for hub storage (web clients). 7/7 tests. Full suite: 81/81. keyderive.js: browser counterpart using PBKDF2-SHA512 + random keypairs encrypted for hub storage. Avoids algorithm mismatch with Python. hub/models.py + users.py: keypair_bundle field added to User, stored on registration, returned in login response for web client key recovery. QUICKSTART.md: fully rewritten. 3 operational scripts in QE/demo-v1/: setup_demo.py — create accounts, group, distribute GEK run_node.py — start HTTP node (watches shared/ directory) download.py — bob login → GEK fetch → decrypt → save All tested locally end-to-end. No invented URLs. Co-Authored-By: Claude Sonnet 4.6 (1M context)