meta event taps

// ============================================================================
// Test 507: Meta-event taps (koru:start and koru:end)
// ============================================================================
// Tests that synthesized meta-events can be tapped for program lifecycle
// observation. The compiler injects koru:start at program begin and koru:end
// at program end.

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

// Simple event to prove main program runs
~event greet { name: []const u8 }

~proc greet {
    std.debug.print("Hello, {s}!\n", .{name});
}

const std = @import("std");

// Tap program start
~tap(koru:start -> *)
| done |> std.io:println(text: "START: Program beginning")

// Tap program end
~tap(koru:end -> *)
| done |> std.io:println(text: "END: Program finishing")

// Main flow
~greet(name: "World")