Refactor: Reorganize project structure by moving core components into dedicated directories and introducing new configuration and API models.

Audio/AudioRecorder.cs

@@ -0,0 +1,67 @@
+using System.Diagnostics;
+
+using Toak.Core;
+using Toak.IO;
+
+namespace Toak.Audio;
+
+public static class AudioRecorder
+{
+    private static readonly string WavPath = Path.Combine(Path.GetTempPath(), "toak_recording.wav");
+
+    public static string GetWavPath() => WavPath;
+
+    public static void StartRecording()
+    {
+        if (File.Exists(WavPath))
+        {
+            File.Delete(WavPath);
+        }
+
+        var pInfo = new ProcessStartInfo
+        {
+            FileName = "ffmpeg",
+            Arguments = $"-f alsa -i default -y {WavPath}",
+            UseShellExecute = false,
+            CreateNoWindow = true,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true
+        };
+
+        var process = Process.Start(pInfo);
+        if (process != null)
+        {
+            StateTracker.SetRecording(process.Id);
+            Notifications.Notify("Recording Started");
+        }
+    }
+
+    public static void StopRecording()
+    {
+        var pid = StateTracker.GetRecordingPid();
+        if (pid.HasValue)
+        {
+            try
+            {
+                var process = Process.GetProcessById(pid.Value);
+                if (!process.HasExited)
+                {
+                    // Send gracefully? Process.Kill on linux sends SIGKILL by default.
+                    // But ffmpeg can sometimes handle SIGINT or SIGTERM if we use alternative tools or Process.Kill.
+                    // Standard .NET Process.Kill(true) kills the tree. Let's start with basic Kill.
+                    process.Kill();
+                    process.WaitForExit();
+                }
+            }
+            catch (Exception ex)
+            {
+                // Process might already be dead
+                Console.WriteLine($"[AudioRecorder] Error stopping ffmpeg: {ex.Message}");
+            }
+            finally
+            {
+                StateTracker.ClearRecording();
+            }
+        }
+    }
+}