docs(ossa): update README & CHANGELOG for 0.1.8 (services, OrbStack, how-to-run)
• Summary: Updates README with new OssA services and OrbStack commands; adds CHANGELOG.md for 0.1.8 (services, Docker files, tests, how to run). • Validation: Local docker compose smoke tests: • docker compose -f infrastructure/docker/docker-compose.orbstack.yml -p ossa up -d • docker compose -f infrastructure/docker/docker-compose.gateway.yml -p ossa up -d • curl http://127.0.0.1:4003/health → 200 OK • Scope: Docs only; no API/CLI behavior changes. • Follow-ups: Tag/release 0.1.8 after merge; publish images/charts.
Tagging checklist
- Confirm CI green for the docs commit.
- Verify local smoke test (/health 200).
- Ensure CHANGELOG includes services, OrbStack commands, tests/validation.
- Confirm no downstreams consumed old 0.1.8; if unsure, use 0.1.8+rev1 instead of rewriting.