006 event taps

// Test 310_006: Event Taps (Library Syntax)
// Validates that ~tap() observes and reacts to event transitions

const std = @import("std");
~import "$std/taps"

// Event with a branch to tap (tap_target = test scaffolding name)
~event hello {}
| tap_target {}

~proc hello {
    std.debug.print("Main flow executed\n", .{});
    return .{ .tap_target = .{} };
}

// Void observer event
~event tap_action {}

~proc tap_action {
    std.debug.print("TAP observed!\n", .{});
}

// Tap that observes hello and logs via tap_action
~tap(hello -> *)
| tap_target |> tap_action()

// Main flow that triggers the tap
~hello()
| tap_target |> _