042 metatype binding scope

// Test: Metatype bindings must be in scope
// BUG: Metatype bindings (Profile p, Audit a, Transition t) aren't added to scope
// so string interpolation {{p.source}} fails with "undeclared identifier 'p'"

~import "$std/taps"
~import "$std/io"

~event work {}
| done {}

~proc work {
    return .{ .done = .{} };
}

// This should work - 'p' binding should be in scope for string interpolation
~tap(work -> *)
| Profile p |> std.io:print.ln("Profile: {{p.source:s}}.{{p.branch:s}}")

~work()
| done |> _