044 metatype multiple observers

// Test 310_044: Multiple metatype observers on same transition
// Both Profile and Transition metatypes should fire on the same event
// This verifies that multiple metatype bindings work together

~import "$std/taps"

~event hello { }
| done { }

~event logger { msg: []const u8 }
| done { }

~[pure]proc hello {
    return .{ .done = .{} };
}

~[pure]proc logger {
    return .{ .done = .{} };
}

// Observe with both Profile and Transition on same event
// Both metatype handlers should fire - note multiple branch handlers in one tap()
~tap(hello -> *)
| Profile p |> logger(msg: p.source)
    | done |> _
| Profile p2 |> logger(msg: p2.source)
    | done |> _

~hello()
| done |> _