Replaces the phase-3 zero stub. Real progression math now lands in the
response body (rank / after_battle_point / after_master_point /
battle_point / master_point). Format is authored by URL (not derived from
BattleContext) so /finish still works when hit without a prior
/do_matching — mirrors the client's URL-per-format Wizard/RankBattleFinishTask
dispatch (decompile lines 12-35).
3 existing tests updated with real progression assertions; 3 new tests
cover D-tier floor loss, format separation, and AI-variant persistence.
Full solution suite: 1583/1583 pass.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
7ff8a7bd92