* feat: sync odds-based EV to participants table for draft room ranking
When admin enters futures odds or manual probabilities, the calculated EV
is now synced from participantExpectedValues to participants.expectedValue.
This closes the gap where EVs were calculated but never reflected in the
draft room ranking. Also changes expectedValue from integer to decimal(10,2)
for better precision, and displays "—" for participants with no odds data.
https://claude.ai/code/session_01JWG2zg2EMzCn6RgEufPC1T
* fix: correct expectedValue type to string in participants route
Missed instance of `expectedValue: 0` (number) that failed typecheck
after schema change from integer to decimal.
https://claude.ai/code/session_01JWG2zg2EMzCn6RgEufPC1T
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Co-authored-by: Claude <noreply@anthropic.com>
