* Fix flex spot count in draft room Teams Drafted view
The flexSpots column in the database defaults to 0 and was never
populated, causing the Teams Drafted grid to always show "0 of 0 flex".
Calculate numFlexPicks dynamically in the loader as
max(0, draftRounds - seasonSports.length) so teams see the correct
flex count (e.g. 7 rounds - 5 sports = 2 flex).
https://claude.ai/code/session_01CSzF4aWuyppGBDqM4MJmhc
* Clean up draft room flex calculation area
- Fix bug: force pick dialog now uses its own isolated search/sport
filter state so it no longer mutates the main participants tab filters
- TeamsDraftedGrid: remove dead first pass in flexPicksByTeam memo,
trim season prop to numFlexPicks only, drop unused type field from
picks sport shape
- Loader: derive userAutodraftSettings from already-loaded
autodraftSettings list, eliminating a redundant DB query
- Extract shared transformedPicks, transformedParticipants, and
seasonSportsData into their own useMemos so both eligibility memos
reuse them instead of duplicating the work
- Memoize draftGrid, draftedParticipantIds, and uniqueSports which
were being recomputed on every render
https://claude.ai/code/session_01CSzF4aWuyppGBDqM4MJmhc
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Co-authored-by: Claude <noreply@anthropic.com>