Gao Mingfei 29817c3b34

fix(backend): use timezone-aware UTC in memory modules (fix pytest DeprecationWarnings) (#1992) ...

* fix(backend): use timezone-aware UTC in memory modules

Replace datetime.utcnow() with datetime.now(timezone.utc) and a shared
utc_now_iso_z() helper so persisted ISO timestamps keep the trailing Z
suffix without triggering Python 3.12+ deprecation warnings.

Made-with: Cursor

* refactor(backend): use removesuffix for utc_now_iso_z suffix

Makes the +00:00 -> Z transform explicit for the trailing offset only
(Copilot review on PR #1992).

Made-with: Cursor

* style(backend): satisfy ruff UP017 with datetime.UTC in memory queue

Made-with: Cursor

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Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

2026-04-08 16:28:00 +08:00

..

harness

fix(backend): use timezone-aware UTC in memory modules (fix pytest DeprecationWarnings) (#1992)

2026-04-08 16:28:00 +08:00