Add explicit Suno handoff action

Tests/MusicAssistantCoreTests/SunoHandoffDestinationTests.swift

@@ -0,0 +1,12 @@
+import MusicAssistantCore
+import XCTest
+
+final class SunoHandoffDestinationTests: XCTestCase {
+    func testCreatePageUsesTheOfficialSunoCreateURL() {
+        let url = SunoHandoffDestination.createPageURL
+
+        XCTAssertEqual(url.scheme, "https")
+        XCTAssertEqual(url.host, "suno.com")
+        XCTAssertEqual(url.path, "/create")
+    }
+}