Implemented the (first version of the) Recording Live Activity in the Attendi widget target.

Widgets/Attendi/Sources/Intents/DiscardRecordingIntent.swift

@@ -0,0 +1,29 @@
+import Commanding
+import AppIntents
+
+/// The intent behind the discard button of the recording Live Activity, which throws the recording away.
+///
+/// The intent is compiled into both the app and the widget extension: the widget references it from the activity's buttons, and the
+/// system executes it in the app's process — where it sends ``RecordingCommand/discard`` through the process-wide
+/// ``RecordingCommander``, mirroring a press of the feature's discard button.
+struct DiscardRecordingIntent: LiveActivityIntent {
+
+    // MARK: Constants
+
+    static let title: LocalizedStringResource = "Discard Recording"
+    static let description = IntentDescription("Throws the paused recording away.")
+    static let openAppWhenRun = false
+
+    // MARK: Methods
+
+    /// Sends the discard command to the recording flow.
+    ///
+    /// - Returns: An empty result, since the discard ends the Live Activity itself.
+    @MainActor
+    func perform() async throws -> some IntentResult {
+        RecordingCommander.shared.send(.discard)
+
+        return .result()
+    }
+
+}