style(mac): hud glass voice overlay

apps/macos/Sources/Clawdis/VisualEffectView.swift

@@ -0,0 +1,38 @@
+import AppKit
+import SwiftUI
+
+struct VisualEffectView: NSViewRepresentable {
+    var material: NSVisualEffectView.Material
+    var blendingMode: NSVisualEffectView.BlendingMode
+    var state: NSVisualEffectView.State
+    var emphasized: Bool
+
+    init(
+        material: NSVisualEffectView.Material,
+        blendingMode: NSVisualEffectView.BlendingMode = .behindWindow,
+        state: NSVisualEffectView.State = .active,
+        emphasized: Bool = false)
+    {
+        self.material = material
+        self.blendingMode = blendingMode
+        self.state = state
+        self.emphasized = emphasized
+    }
+
+    func makeNSView(context _: Context) -> NSVisualEffectView {
+        let view = NSVisualEffectView()
+        view.material = self.material
+        view.blendingMode = self.blendingMode
+        view.state = self.state
+        view.isEmphasized = self.emphasized
+        return view
+    }
+
+    func updateNSView(_ nsView: NSVisualEffectView, context _: Context) {
+        nsView.material = self.material
+        nsView.blendingMode = self.blendingMode
+        nsView.state = self.state
+        nsView.isEmphasized = self.emphasized
+    }
+}
+