Composition HIR & macro expansion

Closed 2026-05-20 on superrepo f57377a (v0.2 delivery tip).

Composition collect/graph/pass, mod-host query bridge, macro registry and expand passes, type-check context wiring, and structured api.json signatures in the compiler by May 20.

Workstreams: analysis-pipeline. 3 catalog tasks anchor this deliverable (milestoneId: v02-composition-macros-hir).

Provenance

• efb67a5 (compiler) — feat(compiler): composition, macros, structured API docs, and resolver fixes
• 760098d (compiler) — feat(compiler): extend macro expand and type-check context wiring
• 2518c48 (compiler) — fix(compiler): refine macro substitution implementation

Catalog scope

• Delivery version: v0.2 (Analysis, packages, and platform spec)
• Deliverable: v02-composition-macros-hir — Composition HIR & macro expansion

Relation

Groups the v0.2 seed tasks linked via milestoneId for Composition HIR & macro expansion.