78ef2ea3d8
Route EVERY write of type_alias_map / module_const_map / global_names (and
their *_by_source analogues) through one helper per map
(putTypeAlias/putModuleConst/putGlobal/dropModuleConst). The global put and the
by-source put are now inseparable, so no write-site can mirror one side and
miss the other — the dual-write drift that leaked ns-only aliases past the
source-aware bare-TYPE gate. Grep-clean: no raw .put/.remove to the three maps
outside the helpers (mirrors the no-raw-TypeTable.update discipline).
The generic-struct instantiation alias sites (Secret :: Box(s32), both the
.call and .parameterized_type_expr branches) previously registered only a named
struct in the TypeTable and never reached type_aliases_by_source, so
moduleTypeAuthor missed them and a bare ns-only use leaked (exit 42, no
diagnostic). Routing those writes through the unified putTypeAlias lands the
alias in the per-source cache and the leak closes BY CONSTRUCTION — a flat use
still resolves to the same TypeId findByName would, a ns-only use is rejected.
Regression 0749 (ns-only Secret :: Box(s32) bare -> "type 'Secret' is not
visible"): fail-before on daf4bbc exit 42 no diagnostic, pass-after exit 1.
Single-author resolution byte-identical (486 passed / 0 failed). resolver.zig
single graph-walk untouched; generic/param-protocol/Vector/type-fn stay legacy.
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