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|zig {
    std.debug.print("Hello, {s}!\n", .{name});
}

const std = @import("std");

// Tap program start - match the `done` branch explicitly
~tap(koru:start -> *)
| done |> std/io:print.ln("START: Program beginning")

// Tap program end - match the `done` branch explicitly
~tap(koru:end -> *)
| done |> std/io:print.ln("END: Program finishing")

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