agra d2eb4c2af4 fix(lower): source-aware initial scan registration for identifier-RHS aliases [stdlib E1.5 attempt-2] ...

E1.5 attempt-1 made the forward-alias FIXPOINT source-aware but left the
EARLIER path — the `scanDecls` identifier-RHS alias branch — resolving the
RHS through the GLOBAL `type_alias_map` / global `findByName` (last-wins
across modules). When a namespaced import is scanned BEFORE a forward alias
`A :: B; B :: u64;`, dep's same-name `B :: u8` already sits in the global map,
so the early scan bound `A` to dep's `u8` and the per-source fixpoint guard
(`aliasResolvedInSource`) then skipped `A` — re-opening 0105 one layer down
(reviewer R1).

Cut the scan registration over to `selectNominalLeaf(rhs, src, is_raw)`,
resolving `B` AS SEEN FROM the alias's OWN source. Only the `.resolved`
outcome is written via the unified `putTypeAlias`; `.pending` / `.undeclared`
/ `.not_visible` leave `A` UNWRITTEN so the source-aware fixpoint re-tries it
once the local `B` registers. No raw `type_alias_map.put` / global `findByName`
selection reintroduced (E1 no-drift invariant). resolver.zig untouched
(single graph-walk invariant).

Also thread the backtick raw flag (`identifier.is_raw`) into BOTH the scan
registration and the fixpoint `selectNominalLeaf` calls, so a raw-RHS alias
(`` RawAlias :: `s2 ``) resolves to the nominal `` `s2 `` author, not the
builtin `s2` spelling (fixes 0154 under the new scan path; closes the same
latent hardcode in the fixpoint).

Regression: examples/0751-modules-forward-alias-ns-before — the reviewer's
exact ordering (ns import with `B :: u8` BEFORE `A :: B; B :: u64;`). Fails
on 2d34993 (`forward A` = 44, dep's u8) and passes after (= 300, local u64).
0750 + 0132/0133 + the full suite stay byte-identical (488/0).

2026-06-07 21:12:33 +03:00

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