fix: refactor

app/static/js/services/audioEngine.js

@@ -0,0 +1,42 @@
+// SonicForge Studio Audio Engine Service
+(function() {
+    let audioCtx = null;
+
+    function getAudioContext() {
+        if (!audioCtx) {
+            audioCtx = new (window.AudioContext || window.webkitAudioContext)();
+        }
+        if (audioCtx.state === 'suspended') {
+            audioCtx.resume();
+        }
+        return audioCtx;
+    }
+
+    function analyzeAudioBufferChannels(audioBuffer) {
+        if (!audioBuffer) return { channels: 1, isStereo: false, label: 'MONO' };
+        const numChannels = audioBuffer.numberOfChannels;
+        const isStereo = numChannels >= 2;
+        return {
+            channels: numChannels,
+            isStereo: isStereo,
+            label: isStereo ? 'STEREO' : 'MONO',
+            sampleRate: audioBuffer.sampleRate,
+            duration: audioBuffer.duration,
+            length: audioBuffer.length
+        };
+    }
+
+    async function decodeAudioFile(file) {
+        const ctx = getAudioContext();
+        const arrayBuffer = await file.arrayBuffer();
+        const audioBuffer = await ctx.decodeAudioData(arrayBuffer);
+        const channelInfo = analyzeAudioBufferChannels(audioBuffer);
+        return { audioBuffer, channelInfo };
+    }
+
+    window.SonicAudio = {
+        getAudioContext,
+        analyzeAudioBufferChannels,
+        decodeAudioFile
+    };
+})();