/trade add-player hardcoded from_roster=MAJOR_LEAGUE for all players,
causing incorrect transaction records when trading MiL/IL players. This
cascaded into false roster validation errors for other teams' /dropadd
commands because pre-existing transaction processing misidentified which
roster a player was leaving from.
Now looks up the player's actual team and calls roster_type() to determine
the correct source roster. Same fix applied to /trade supplementary.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
58043c996d