056 slash resolves qualified event

// Slash namespace resolves a REGULAR qualified event (not just keyword
// transforms like print.ln). `std/io:print` must resolve to the same event as
// `std/io:print` — the qualifier `/` is normalized to the internal `.` form
// (parseQualifiedPath + canonicalize). Member access after `:` keeps `.`.
~import std/io

const msg: []const u8 = "slash ok";

~std/io:print(msg)