feat(admin): show moves and hints used on the user card

The admin user-detail stats panel listed wins/losses/draws/best game/best move
but not the two new lifetime counters. Surface them as raw operator-facing
numbers (Moves, Hints used) next to the rest.

Audit follow-up (no code needed elsewhere): the load-test harness uses the
shared pkg/fbs codec and only checks result codes / reads a StateView subset, so
the trailing StatsView/StateView/HintResult fields are backward-compatible there;
the game-detail per-seat "hints used" already reflects the true total via the
repurposed counter.

backend/internal/server/handlers_admin_console.go

@@ -348,7 +348,7 @@ func (s *Server) consoleUserDetail(c *gin.Context) {
 	}
 	if view.HasStats {
 		if st, err := s.accounts.GetStats(ctx, id); err == nil {
-			view.Stats = adminconsole.StatsRow{Wins: st.Wins, Losses: st.Losses, Draws: st.Draws, MaxGamePoints: st.MaxGamePoints, MaxWordPoints: st.MaxWordPoints}
+			view.Stats = adminconsole.StatsRow{Wins: st.Wins, Losses: st.Losses, Draws: st.Draws, MaxGamePoints: st.MaxGamePoints, MaxWordPoints: st.MaxWordPoints, Moves: st.Moves, HintsUsed: st.HintsUsed}
 		}
 	}
 	if ids, err := s.accounts.Identities(ctx, id); err == nil {