015 bare event impl needs switch

// PIN (GREEN — lint): implementing a DECLARED event with a bare `IDENT = ...`
// in a host-embedded `.kz` (no `~`) is a forgotten switch, not a host const.
// Previously this silently became a host_line, the event had no impl, and
// the failure surfaced as inscrutable Zig. Now: PARSE003 with the `~` hint.
// Found 2026-09-06 while smelting the void-reraise ladder (220_030).
~import std/io
~tor outer { s: string }
outer = std/io:print.ln("OUTER {{ s:s }}")