Files
plm-lottery/app/api
davideandClaude Sonnet 5 bb8b71278a Stamp UTC on naive API timestamps before serializing (B-35)
SQLite/aiosqlite returns DateTime columns as naive even though every
value is written in UTC, so a bare .isoformat() dropped the offset and
the frontend's new Date() parsed it as local time. Add a shared
isoformat_utc() helper and use it at every call site that was missing
the fix already applied ad hoc in rounds.py.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-27 12:20:22 +02:00
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