load_existing_transactions only queried for the base team abbreviation
(e.g. "POR"), missing trades involving MiL/IL affiliates ("PORMIL",
"PORIL"). This caused false "too many players" errors when a pending
trade would have cleared a roster spot.
- get_team_transactions now accepts Union[str, List[str]] for team_abbrev
- load_existing_transactions queries all org affiliates [BASE, BASEMiL, BASEIL]
- Added 5 tests covering the fix and backwards compatibility
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
