Improve phase trail and correlation controls

www/core/audio.js

@@ -1,7 +1,12 @@
 // core/audio.js — Phoenix Audio-Init, Metrics-WS, Waveform/Spectrogram buffers
 // Wird von main.js mit `initAudio(env)` gestartet. Nutzt env.config (CONFIG) und env.meters.
 
-import { applyPhoenixGlobalConfig, buildPhoenixGlobalConfigPayload, saveConfig } from './config.js';
+import {
+  applyPhoenixGlobalConfig,
+  buildPhoenixGlobalConfigPayload,
+  normalizeCorrelationResponseSeconds,
+  saveConfig,
+} from './config.js';
 import { decodePhoenixSpectroBuffer, decodePhoenixVisualsBuffer } from './binary_protocol.js';
 import { getRtwCenters } from './rtw_centers.js';
 
@@ -943,7 +948,10 @@ export function buildRtaRuntimeConfig(CONFIG = {}) {
     ppmEbuDecayDbPerS: 24 / 2.8,
     lufsIWindowMin: Number.isFinite(CONFIG.LUFS_I_WINDOW_MIN) ? CONFIG.LUFS_I_WINDOW_MIN : 4,
     lufsINormEnabled: !!CONFIG.LUFS_I_NORM_ENABLED,
-    correlationResponseS: Number(CONFIG.CORR_RESPONSE_S) >= 1.75 ? 2.5 : 1.0,
+    correlationResponseS: normalizeCorrelationResponseSeconds(CONFIG.CORR_RESPONSE_S),
+    correlationSilenceThresholdRmsDbfs: Number.isFinite(CONFIG.CORR_SILENCE_THRESHOLD_RMS_DBFS)
+      ? Math.max(-90, Math.min(-40, CONFIG.CORR_SILENCE_THRESHOLD_RMS_DBFS))
+      : -75,
     correlationResetToken: Math.max(0, Math.floor(Number(CONFIG.CORR_RESET_TOKEN) || 0)),
     xyPoints: [128, 256, 512, 1024, 2048].includes(Number(CONFIG.XY_POINTS))
       ? Number(CONFIG.XY_POINTS)