038 tap terminal void

// Test 310_038: Tap Terminal Void Event
// Validates that void events with NO continuation can be tapped
//
// This is critical for full program profiling - we must be able to observe
// ALL events, including terminal void events that don't continue anywhere.
//
// Pattern: ~std/io:print.ln("Hello")  <-- nothing after this
// The tap should still fire on the transition from println to nowhere.

const std = @import("std");

~import std/io
~import std/taps

// Logger to observe taps
~event log { msg: []const u8 }

~proc log|zig {
    std.debug.print("TAP observed: {s}\n", .{msg});
}

// Tap all std/io:print* events, even terminal ones
~tap(std/io:print* -> *)
| Profile p |> log(msg: p.source)

// Terminal void event - NO continuation after this
~std/io:print.ln("Hello from terminal void")