Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.
Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).
Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.
zig build test: 426/426; examples suite: 595/595.
A self / forward / mutual reference inside a same-name struct shadow bound to
the FIRST same-name author (another module's struct) instead of its own nominal
TypeId: registerStructDecl resolved a shadow's field types BEFORE registering its
decl key in type_decl_tids, so namedRefTid fell through to the name-only
findByName first-author fallback (F1).
Fix: a genuine same-name struct shadow (≥2 DISTINCT struct decls author the name
in the scanned decl set) reserves ALL its authors' distinct nominal slots up-front
in scanDecls — the first at id 0, the rest at fresh nonzero ids — BEFORE any field
resolves. Every self / forward / mutual ref to the shadow name then resolves via
type_decl_tids to its OWN nominal TypeId.
Gating on the scanned decls, not nameHasMultipleTypeAuthors (the raw import facts
over-count a single file reached via two un-normalized import spellings, e.g.
math/matrix44), keeps single-real-decl names on the legacy id-0 post-field path —
byte-identical (494 prior markers unchanged, single-author old==new).
internNamedTypeDecl now takes the precomputed nominal_id; no-drift + single
graph-walk invariants untouched; generics / enum / union / error-set stay legacy.
Regressions: 0757 (self-ref *Box → reads B's own field), 0758 (forward + mutual
*Node/*Box between two shadows). Fail-before on d98ad5c
("field 'y'/'m' not found"), pass-after.
