026 destination scoping

// Test 624: Destination Scoping with Wildcards
// Validates that destination patterns match visible events in scope
// Pattern ~tap(* -> file.write) observes ALL sources calling file.write

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

~event file.read {}

~proc file.read|zig {
}

~event file.write {}

~proc file.write|zig {
    std.debug.print("Writing\n", .{});
}

~event network.fetch {}

~proc network.fetch|zig {
}

~event logger { caller: []const u8 }

~proc logger|zig {
    std.debug.print("write called from: {s}\n", .{caller});
}

// Observe ALL sources calling file.write
~tap(* -> file.write)
| Profile p |> logger(caller: p.source)

~file.read() |> file.write() |> network.fetch() |> file.write()