chore(release): v1.0.1 — vec0 + mimir_actions + self_act hotfix

Bump engine + launcher version to 1.0.1 and document the three
silent-failure fixes shipped in this release:
- engine.cjs: vec0 `id` column + self_act ALLOWED_OPS_BY_TYPE entry
- dashboard.js (private bundle): mimir_actions INSERT in picker success branch

v1.0.0 — first stable OSS release