e9c13ae5f4
RankProgressResult gains a TierAdvanced bool (defaulted false so the 7-arg positional-constructor sites don't break). Set true iff the grant is a win AND RankTier.Name resolves both pre-grant and post-grant to distinct strings — i.e. a promotion crossed a tier boundary. Explicitly guards on isWin so a demotion (in principle possible after a loss below a tier floor, though the current floor rules prevent it) never fires the achievement backward. Three new tests: no-cross win, beginner→d cross, loss stays false. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>