Release 0.1.9

[Dkm0315]

Summary

• bump Muster workspace packages from 0.1.8 to 0.1.9
• promote the current integration-readiness and Office artifact changelog into the 2026-06-29 release section
• keep the release diff scoped to metadata/changelog only

Validation

• pnpm install
• pnpm build
• pnpm exec tsx --test packages/core/test/integration-packs.test.ts packages/core/test/qa-pack-readiness.test.ts packages/core/test/capability.test.ts
• pnpm exec tsx --test packages/cli/test/cli.test.ts
• npm pack --dry-run from packages/cli

Publish note

• npm registry publish still requires npm auth on the release machine (npm whoami currently returns ENEEDAUTH).