All five parsers (plex, syslog, servarr, qbittorrent, plaintext) were
using .replace(tzinfo=timezone.utc) on naive datetimes parsed from log
files, which slaps a UTC label on what is actually local-time data.
On a UTC-7 system a 2pm entry was stored as 14:00Z instead of 21:00Z,
causing time-window searches to return zero results.
Fix: use .astimezone(timezone.utc) instead, which treats the naive
datetime as local time and converts correctly.
Tests updated to round-trip back to local time for assertion so they
pass on any timezone, not just UTC.
pyr0ball
0b3d95cd26