Store the hints a player used in each game, and add two lifetime tiles —
Moves and Hint share — to the statistics screen.
- per-game: game_players.hints_used now counts EVERY hint (allowance + wallet),
not just the free allowance, so it is the seat's true total hints used this
game. The allowance decision (used < HintsPerPlayer) and the hint badge values
(hints_remaining / wallet_balance) are unchanged — the lobby hint-count fix does
NOT regress; only the admin "hints used" column, which silently under-counted
wallet hints, becomes accurate.
- account_stats gains two summed counters: moves (the player's plays — passes and
exchanges excluded) and hints_used (every hint). Computed at game finish in
buildStats over the same non-guest, non-honest-AI games as the rest of the stats.
- wire: StatsView gains moves + hints_used (trailing); gateway + UI codec + model;
regen.
- ui: two tiles (Moves, Hint share = hints_used/moves, one-decimal % in the active
locale); card order games·wins·draws·losses·moves·hint-share·best game·win-rate.
- docs: ARCHITECTURE §9 + baseline comment, FUNCTIONAL (+ru), UI_DESIGN.
Tests: TestHintPolicy (hints_used counts the wallet hint), TestGameLifecycleAndStats
(moves>0, hints=0), gateway stats round-trip, UI hintShare unit + codec + e2e.