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>
Reads RankInfoEntry.LowerLimitPoint from ranks.csv (via IGlobalsRepository)
for main-tier floors — no hardcoded thresholds. Master (Point=50000) and
Grand Master (MP-based, floor 5000) branch handles the post-Master path.
GetAsync is a read-only snapshot used later by AI-start's SelfInfo.
13 unit tests cover first-win, loss floors (0, Beginner→D, D→D0), win
crossing 50000, MP awards at Master, GM promotion at MP≥5000, GM floor
protecting against Master demotion, format separation, Crossover throw.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
