this is a big slop that might backfire lol... new config system and UI!

server/src/services/audioLevelsService/configuration.js

@@ -0,0 +1,15 @@
+// Audio-Level Configuration
+// Purpose: Defines server base gains and the permitted personal adjustment range.
+// Scope: Exports only defaults and validation metadata.
+const { strictObject, number, integer } = require('../../configuration/schemaHelpers');
+
+module.exports = {
+  key: 'audioLevels',
+  defaultValue: { hornGain: 1, ttsGain: 1, forwardGain: 1, maxPersonalAdjustmentPercent: 50 },
+  schema: strictObject({
+    hornGain: number({ minimum: 0, maximum: 4 }),
+    ttsGain: number({ title: 'TTS gain', minimum: 0, maximum: 4 }),
+    forwardGain: number({ minimum: 0, maximum: 4 }),
+    maxPersonalAdjustmentPercent: integer({ minimum: 0, maximum: 100 }),
+  }, { title: 'Audio levels', required: ['hornGain', 'ttsGain', 'forwardGain', 'maxPersonalAdjustmentPercent'] }),
+};