S3.6 — Release 0.8.0

Intent

Cut 0.8.0 "Toolchain refresh" on all three registries through the new tokenless publishing paths. Release-please PR #32 (0.7.1, Cargo.toml URL fix) is superseded and folded in.

Acceptance criteria

Tasks

Source

Agreed in the senior-engineer grilling session 2026-10-08 (decisions in repo docs/planning/adr/0003-motion-validation.md, glossary in CONTEXT.md; toolchain research briefs in the same session).