fix: normalize ambience loudness for v0.2.5

tests/browser/audio.spec.ts

@@ -24,14 +24,14 @@ test("음성·현장음 109개 versioned WAV를 실제 Chrome에서 해시·디
   page.on("requestfailed", (request) => failed.push(request.url()));
   page.on("pageerror", (error) => errors.push(error.message));
   await page.goto("/");
-  await expect(page).toHaveTitle("단어를 맞춰라 · Find-Word v0.2.3");
-  await expect(page.locator(".version")).toHaveText("v0.2.3");
+  await expect(page).toHaveTitle("단어를 맞춰라 · Find-Word v0.2.5");
+  await expect(page.locator(".version")).toHaveText("v0.2.5");
   const plan = JSON.parse(
     readFileSync(".agent/AMBIENCE-SOURCES-v0.2.3.json", "utf8"),
   );
   const published = await page.evaluate(async () => ({
-    manifest: await (await fetch("/ambience/manifest.json?v=0.2.3")).json(),
-    notice: await (await fetch("/ambience/AMBIENCE_NOTICES.md?v=0.2.3")).text(),
+    manifest: await (await fetch("/ambience/manifest.json?v=0.2.5")).json(),
+    notice: await (await fetch("/ambience/AMBIENCE_NOTICES.md?v=0.2.5")).text(),
   }));
   expect(published.manifest).toEqual(
     JSON.parse(readFileSync("public/ambience/manifest.json", "utf8")),
@@ -80,13 +80,13 @@ test("음성·현장음 109개 versioned WAV를 실제 Chrome에서 해시·디
     introUrl,
     ...ambience.files.map(
       (entry: { file: string }) =>
-        new URL(`/ambience/${entry.file}?v=0.2.3`, page.url()).href,
+        new URL(`/ambience/${entry.file}?v=0.2.5`, page.url()).href,
     ),
     ...targetUrls.map((url) => new URL(url, page.url()).href),
   ];
   expect(
     new Set(urls.map((url) => new URL(url).searchParams.get("v"))),
-  ).toEqual(new Set(["0.2.3"]));
+  ).toEqual(new Set(["0.2.5"]));
   expect(
     urls.every((url) => new URL(url).origin === new URL(page.url()).origin),
   ).toBe(true);
@@ -96,7 +96,7 @@ test("음성·현장음 109개 versioned WAV를 실제 Chrome에서 해시·디
     version: string;
     files: { file: string; sha256: string; bytes: number; duration: number }[];
   };
-  expect(manifest.version).toBe("0.2.3");
+  expect(manifest.version).toBe("0.2.5");
   // 두 manifest의 파일명 충돌 없이 경로를 명시해 109개 응답을 독립 대조한다.
   const entries = [
     ...manifest.files.map((entry) => ({