Simple Challenge Roulette

Added
- Per-item records. The mod now keeps the best time for every target item separately, plus the number of runs on that item. Items with a record get a thin accent bar in the item selection grid, and the hover tooltip shows the record and the run count.
- Run history. The last 50 runs are stored: item, modifiers, time, date and result (win / fail / abandoned). File: challengeroulette-history.json in the game directory.
- "History" tab on the statistics screen, switchable with the two buttons at the top.
- Record line on the victory screen: the per-item record plus a golden "New record!" label when the time was improved.
- "Items with a record" counter in the statistics card.
- New strings localized for all 6 languages: EN, RU, DE, ES, PL, ZH.
Fixed
- A failed run no longer counts as a win. Previously a challenge failed by Soulbound, No Second Chances or Time Bomb was recorded as a completion: it increased the completion counter and the best time. Now failures only go to the history and never affect progression or unlocks.
- Re-entering a world with an already completed challenge no longer records the same result twice (deduplication by completion timestamp).
- The "Wins" counter no longer shows 0 on the title screen; the duplicated heading on the History tab is gone.
Compatibility
- The old challengeroulette-stats.json (format 2 and 1) is read automatically and upgraded to format 3 on the first save. Per-item records start collecting from this run onward — old times were never stored and cannot be restored.