- mlb.ts: use streakCode alone (the API already returns the full string like
"W3"); appending streakNumber was doubling the digit, causing "L33" display
- Update mlb.test.ts mocks to match real API format (streakCode "W3" not "W")
- RegularSeasonStandings: conditionally hide GB/L10/STK columns when no rows
have data, so pre-season or stats-free sports don't show blank columns
- Mobile two-row layout: GP/PCT/GB/L10 move to a secondary sub-row (sm:hidden)
so all data stays visible without horizontal scroll on small screens; STK and
W/L remain on the primary row; reduce min-w from 740px to 360px
https://claude.ai/code/session_01RADi3LhYMPbRDm5no1ZpdF
cee9469f48