perf: harden realtime localization pipeline

tests/unit/acoustics.test.js

@@ -219,6 +219,39 @@ test("마이크 주파수 응답을 dB와 wrapped phase로 보간하고 끝점
   assertEqual(above.phaseDeg, -170, "upper endpoint phase");
 });
 
+test("DAS 역응답은 깊은 notch의 boost를 기본 24 dB로 제한한다", async () => {
+  const arrayDefinition = {
+    microphones: [{
+      id: "notched",
+      position: [0, 0, 0],
+      frequencyResponse: [
+        { frequencyHz: 0, gainDb: -120 },
+        { frequencyHz: 4000, gainDb: -120 },
+      ],
+    }],
+  };
+  const options = {
+    bin: 8,
+    spectrum: { real: Float32Array.of(1), imaginary: Float32Array.of(0) },
+    frameCount: 1,
+    arrayDefinition,
+    pointCount: 1,
+    distances: Float32Array.of(0),
+    sampleRate: 8000,
+    fftSize: 256,
+    speedOfSound: 343,
+    compensateFrequencyResponse: true,
+    pointBatchSize: 64,
+  };
+  const limited = await computeBinMap(options);
+  const noBoost = await computeBinMap({ ...options, maxCompensationDb: 0 });
+  const explicitLegacyLimit = await computeBinMap({ ...options, maxCompensationDb: 120 });
+
+  assertNear(limited[0], dbToLinear(24) ** 2, 1e-3, "default limited power");
+  assertNear(noBoost[0], 1, 1e-9, "zero boost limit");
+  assert(explicitLegacyLimit[0] > 1e11, "explicit 120 dB limit permits legacy boost");
+});
+
 test("index 기반 noise가 seed에 대해 결정적이다", () => {
   const first = Array.from({ length: 16 }, (_, index) => whiteNoiseAt(42, index));
   const second = Array.from({ length: 16 }, (_, index) => whiteNoiseAt(42, index));