app.logger.info("message", key=value) appends the keyword arguments as
JSON encoded fields, so callers no longer format the values themselves.
All log calls use fixed messages and put variable values into fields.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Anonymous users must not get cookies or session store entries, so a
CSRF token for /login is not possible. Instead, every unsafe request is
checked statelessly via Sec-Fetch-Site, falling back to Origin. Requests
without both headers are not from a browser and are accepted. The
expected origin comes from the new MAX_ORIGIN setting, which is required
outside of debug mode.
Further CSRF changes:
- Do not delete the CSRF token on a failed check. It added no security,
but invalidated forms in open tabs and could be triggered cross-site.
- Treat HEAD and OPTIONS as safe methods.
Keep the login page free of sessions:
- Show login messages via ?msg=login_required|logout (fixed keys only)
and the login error via the template context instead of flash().
- Only send the session deletion cookie if the client sent a cookie.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
isort's lines_after_imports = 2 conflicted with black, so run-cleanup
reverted black's changes. Use isort's black profile instead and apply the
resulting formatting. Also fix the flake8 errors in check_email_mixin and
drop a leftover debug print.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>