fix: normalize ambience loudness for v0.2.5

tests/browser/game.spec.ts

@@ -41,8 +41,8 @@ test("실제 오디오로 혼합 모드 완주·레이아웃·접근성·외부
   await page.getByRole("button", { name: "게임 시작 · 소리 듣기" }).click();
   await expect.poll(() => audioUrls.length).toBe(2);
   expect(audioUrls.map((url) => url.searchParams.get("v"))).toEqual([
-    "0.2.3",
-    "0.2.3",
+    "0.2.5",
+    "0.2.5",
   ]);
   await expect(page.getByRole("button", { name: /듣는 중/ })).toBeDisabled();
   await expect(page.locator(".sound-wave.active i").first()).toHaveCSS(
@@ -117,7 +117,7 @@ test("실제 오디오로 혼합 모드 완주·레이아웃·접근성·외부
     page.getByRole("button", { name: "게임 시작 · 소리 듣기" }),
   ).toBeVisible();
   expect(new Set(audioUrls.map((url) => url.searchParams.get("v")))).toEqual(
-    new Set(["0.2.3"]),
+    new Set(["0.2.5"]),
   );
   expect(
     audioUrls.filter((url) => url.pathname !== "/audio/intro.wav"),
@@ -150,7 +150,7 @@ for (const failed of ["intro", "target"]) {
       "소리를 재생하지 못했어요",
     );
     expect(missing).toHaveLength(1);
-    expect(new URL(missing[0]!).searchParams.get("v")).toBe("0.2.3");
+    expect(new URL(missing[0]!).searchParams.get("v")).toBe("0.2.5");
     expect(audioUrls).toHaveLength(2);
     await page.unroute(matchesFailure);
     await page.getByRole("button", { name: "다시 시도" }).click();
@@ -162,7 +162,7 @@ for (const failed of ["intro", "target"]) {
     expect(audioUrls.slice(2).sort()).toEqual(audioUrls.slice(0, 2).sort());
     expect(
       new Set(audioUrls.map((url) => new URL(url).searchParams.get("v"))),
-    ).toEqual(new Set(["0.2.3"]));
+    ).toEqual(new Set(["0.2.5"]));
     const targetPath = audioUrls
       .map((url) => new URL(url).pathname)
       .find((path) => path !== "/audio/intro.wav")!;