feat: add AppSettings with API key, shortcut, output mode, delay

MyVoxtral/MyVoxtral/Models/AppSettings.swift

@@ -0,0 +1,45 @@
+import SwiftUI
+import Carbon.HIToolbox
+
+enum OutputMode: String, CaseIterable {
+    case textBox = "Text Window"
+    case cursorInjection = "Type at Cursor"
+}
+
+final class AppSettings: ObservableObject {
+    static let shared = AppSettings()
+
+    @AppStorage("apiKey") var apiKey: String = ""
+    @AppStorage("outputMode") var outputMode: OutputMode = .textBox
+    @AppStorage("streamingDelayMs") var streamingDelayMs: Int = 480
+    @AppStorage("shortcutKeyCode") private var shortcutKeyCodeStorage: Int = 0
+    @AppStorage("shortcutModifiers") private var shortcutModifiersStorage: Int = 0
+
+    var shortcutKeyCode: UInt16 {
+        get { UInt16(shortcutKeyCodeStorage) }
+        set { shortcutKeyCodeStorage = Int(newValue) }
+    }
+
+    var shortcutModifiers: UInt {
+        get { UInt(bitPattern: shortcutModifiersStorage) }
+        set { shortcutModifiersStorage = Int(bitPattern: newValue) }
+    }
+
+    var hasAPIKey: Bool { !apiKey.isEmpty }
+
+    var hasShortcut: Bool { shortcutKeyCode != 0 || shortcutModifiers != 0 }
+
+    var shortcutDisplayString: String {
+        guard hasShortcut else { return "Not Set" }
+        var parts: [String] = []
+        let mods = NSEvent.ModifierFlags(rawValue: shortcutModifiers)
+        if mods.contains(.control) { parts.append("⌃") }
+        if mods.contains(.option) { parts.append("⌥") }
+        if mods.contains(.shift) { parts.append("⇧") }
+        if mods.contains(.command) { parts.append("⌘") }
+        if let scalar = Unicode.Scalar(shortcutKeyCode) {
+            parts.append(String(Character(scalar)).uppercased())
+        }
+        return parts.joined()
+    }
+}