Trim trailing zeros on qualifying-points values

Display fractional QP with up to 2 decimals and trailing zeros trimmed
(1.50→1.5, 0.50→0.5) in both the Discord embed (formatQPValue) and the web
UI (formatQP) so the two surfaces stay consistent.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011U7mTxDVK2cH8E2BWjCiUv

app/components/__tests__/QualifyingPointsStandings.test.tsx

@@ -14,7 +14,7 @@ const scoringRules = {
 };
 
 describe("QualifyingPointsStandings", () => {
-  it("renders fractional QP to hundredths", () => {
+  it("renders fractional QP to at most hundredths with trailing zeros trimmed", () => {
     render(
       <QualifyingPointsStandings
         standings={[
@@ -52,7 +52,8 @@ describe("QualifyingPointsStandings", () => {
     );
 
     expect(screen.getByText("14.67 QP")).toBeInTheDocument();
-    expect(screen.getByText("0.50 QP")).toBeInTheDocument();
+    // 0.50 trims its trailing zero to 0.5; 14.67 and 0.43 are unaffected.
+    expect(screen.getByText("0.5 QP")).toBeInTheDocument();
     expect(screen.getByText("0.43 QP")).toBeInTheDocument();
   });
 });

app/components/scoring/QualifyingPointsStandings.tsx

@@ -55,7 +55,9 @@ interface QualifyingPointsStandingsProps {
 function formatQP(raw: string): string {
   const n = parseFloat(raw);
   if (isNaN(n)) return "—";
-  return n % 1 === 0 ? n.toString() : n.toFixed(2);
+  // At most 2 decimals, trailing zeros trimmed (1.50→1.5). Mirrors the Discord
+  // embed's formatQPValue (app/services/discord.ts) so the site and Discord agree.
+  return parseFloat(n.toFixed(2)).toString();
 }
 
 export function QualifyingPointsStandings({

app/services/__tests__/discord.test.ts

@@ -857,11 +857,13 @@ describe("sendQualifyingPointsUpdateNotification", () => {
     });
 
     const desc = getDescription();
-    // Mirrors the web UI's formatQP: fractional QP renders with 2 decimals ("1.50"),
-    // never rounded to an integer. The Points Awarded line no longer carries a "+".
-    expect(desc).toContain("• **Novak Djokovic (snarkymcgee)** — 1.50 QP");
+    // Mirrors the web UI's formatQP: fractional QP renders with up to 2 decimals and
+    // trailing zeros trimmed ("1.5"), never rounded to an integer. The Points Awarded
+    // line no longer carries a "+".
+    expect(desc).toContain("• **Novak Djokovic (snarkymcgee)** — 1.5 QP");
     expect(desc).not.toContain("+");
     expect(desc).not.toContain("2 QP");
+    expect(desc).not.toContain("1.50");
   });
 
   it("excludes participants ranked outside the top 8 from the Drafted Participants section", async () => {

app/services/discord.ts

@@ -66,11 +66,12 @@ function escapeMarkdown(text: string): string {
 /**
  * Format a QP value for display. QP is genuinely fractional (e.g. a tennis R16 loser
  * earns 1.5 QP from the 9–16 split), so we must NOT round: show whole numbers plainly
- * and fractional values to 2 decimals. Mirrors the web UI's formatQP
- * (app/components/scoring/QualifyingPointsStandings.tsx) so Discord and the site agree.
+ * and fractional values to at most 2 decimals with trailing zeros trimmed (1.50→1.5).
+ * Mirrors the web UI's formatQP (app/components/scoring/QualifyingPointsStandings.tsx)
+ * so Discord and the site agree.
  */
 function formatQPValue(n: number): string {
-  return n % 1 === 0 ? n.toString() : n.toFixed(2);
+  return parseFloat(n.toFixed(2)).toString();
 }
 
 export interface StandingEntry {