fixed matches fee calc

src/components/match-history-battle-card.tsx

@@ -4,6 +4,40 @@ import Link from "next/link";
 import { ClickableUserId } from "@/components/clickable-user-id";
 import { formatRcLabelFromCoinsBigInt } from "@/lib/coins-rc";
 
+/** Ledger rows are per player; both players pay → show `1.0 RC x 2 = 2.0 RC`. */
+function rcPerPlayerTimesTwoLine(coinStr: string | null): string {
+  if (coinStr == null || String(coinStr).trim() === "") return "—";
+  try {
+    const perPlayer = BigInt(String(coinStr).trim());
+    const bothPlayers = perPlayer * BigInt(2);
+    return `${formatRcLabelFromCoinsBigInt(perPlayer)} x 2 = ${formatRcLabelFromCoinsBigInt(bothPlayers)}`;
+  } catch {
+    return "—";
+  }
+}
+
+function entryCombinedPerPlayerTimesTwoLine(
+  feeCoins: string | null,
+  holdCoins: string | null,
+): string {
+  if (
+    feeCoins == null ||
+    holdCoins == null ||
+    String(feeCoins).trim() === "" ||
+    String(holdCoins).trim() === ""
+  ) {
+    return "—";
+  }
+  try {
+    const perPlayer =
+      BigInt(String(feeCoins).trim()) + BigInt(String(holdCoins).trim());
+    const bothPlayers = perPlayer * BigInt(2);
+    return `${formatRcLabelFromCoinsBigInt(perPlayer)} x 2 = ${formatRcLabelFromCoinsBigInt(bothPlayers)}`;
+  } catch {
+    return "—";
+  }
+}
+
 type PlayerSide = {
   id: number | null;
   username: string | null;
@@ -16,7 +50,7 @@ type Props = {
   matchId: number;
   statusLabel: string;
   createdAtLabel: string;
-  /** `matches.entry_fee` as coin string (bigint); RC shown in footer. */
+  /** Ledger `entry_fee` / player as coin string; null if unknown. */
   entryFeeCoins: string | null;
   /** Ledger `entry_hold` / player as coin string; null if unknown. */
   entryHoldPerPlayerCoins: string | null;
@@ -28,35 +62,6 @@ type Props = {
   winnerId: number | string | null;
 };
 
-function rcLabelFromCoinString(s: string | null): string {
-  if (s == null || String(s).trim() === "") return "—";
-  try {
-    return formatRcLabelFromCoinsBigInt(BigInt(String(s).trim()));
-  } catch {
-    return "—";
-  }
-}
-
-function entryTotalRcLabel(
-  feeCoins: string | null,
-  holdCoins: string | null,
-): string {
-  if (
-    feeCoins == null ||
-    holdCoins == null ||
-    String(feeCoins).trim() === "" ||
-    String(holdCoins).trim() === ""
-  ) {
-    return "—";
-  }
-  try {
-    const sum = BigInt(String(feeCoins).trim()) + BigInt(String(holdCoins).trim());
-    return formatRcLabelFromCoinsBigInt(sum);
-  } catch {
-    return "—";
-  }
-}
-
 function idsMatch(
   a: number | string | null | undefined,
   b: number | string | null | undefined,
@@ -185,9 +190,12 @@ export function MatchHistoryBattleCard({
   right,
   winnerId,
 }: Props) {
-  const entryRc = entryTotalRcLabel(entryFeeCoins, entryHoldPerPlayerCoins);
-  const entryFeeRc = rcLabelFromCoinString(entryFeeCoins);
-  const entryHoldRc = rcLabelFromCoinString(entryHoldPerPlayerCoins);
+  const entryLine = entryCombinedPerPlayerTimesTwoLine(
+    entryFeeCoins,
+    entryHoldPerPlayerCoins,
+  );
+  const entryHoldLine = rcPerPlayerTimesTwoLine(entryHoldPerPlayerCoins);
+  const entryFeeLine = rcPerPlayerTimesTwoLine(entryFeeCoins);
   const prizeCcDisplay = prizeCcLabel.trim() === "" ? "—" : prizeCcLabel;
   const hasWinner =
     winnerId != null &&
@@ -238,16 +246,16 @@ export function MatchHistoryBattleCard({
             Time {createdAtLabel}
           </span>
           <span className="rounded bg-zinc-900/10 px-2 py-1 dark:bg-zinc-100/10">
-            Entry {entryRc}
+            Entry {entryLine}
           </span>
           <span className="rounded bg-zinc-900/10 px-2 py-1 dark:bg-zinc-100/10">
-            Entry hold {entryHoldRc}
+            Entry hold {entryHoldLine}
           </span>
           <span className="rounded bg-zinc-900/10 px-2 py-1 dark:bg-zinc-100/10">
             Prize {prizeCcDisplay} CC
           </span>
-          <span className="rounded-md border border-emerald-200/90 bg-emerald-50 px-2 py-1 text-[11px] font-medium text-emerald-600 dark:border-emerald-300/35 dark:bg-emerald-400/15 dark:text-emerald-200">
-            Entry fee {entryFeeRc}
+          <span className="rounded-md border border-emerald-200/90 bg-emerald-50 px-2 py-1 text-[11px] font-medium text-emerald-600 tabular-nums dark:border-emerald-300/35 dark:bg-emerald-400/15 dark:text-emerald-200">
+            Entry fee {entryFeeLine}
           </span>
         </div>
         <Link