#40: ScorecardTracker cached data in memory at startup — background task never
saw newly published scorecards. Fixed by reloading from disk on every read.
#39: Win percentage defaulted to 50% when unavailable, showing a misleading
50/50 bar. Now defaults to None with "unavailable" message in embed. Parsing
handles decimal (0.75), percentage string, and empty values. Also fixed
orientation bug where win% was always shown as home team's even when the
sheet reports the away team as the leader.
Additionally: live scorebug tracker now distinguishes between "all games
confirmed final" and "sheet read failures" — transient Google Sheets errors
no longer hide the live scores channel.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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