046 ast name type home backfill

const std = @import("std");

// A user module type sharing an ast name. `std.compiler`'s host block
// declares `const Item = ast.Item` at column 0, so the first-wins
// host_type_homes map registers `Item` under std.compiler whenever the
// injected import walks first — which is always, since the bootstrap
// import lands at line 1. A bare `*Item` in a resolved signature then
// backfilled the whole compiler module — its processTestFlow body emits
// `log.verbose` with no `log` binding in the program unit and the
// emitted Zig fails to compile. The field's split-out module_path names
// the real home directly; a bare name inside a module's own signature
// is module-local by 220_031.
pub const Item = struct { n: f64 };

~pub tor thing.make {} -> *Item<live!>
~proc thing.make|zig {
    const i = std.heap.page_allocator.create(Item) catch unreachable;
    i.* = .{ .n = 1 };
    return i;
}