Root README.md:
- Replace 2-line stub with proper project overview
- Add quick start, requirements, documentation index, testing section
PRD.md:
- Change status from Draft to Final, version 1.0 to 2.0
- Fix test script name from test-stack.sh to demo-test.sh
- Fix impossible NFRs: deployment <60s to <5min, setup <30s to <2min
(Elasticsearch alone needs 60s start_period)
💘 Generated with Crush
Assisted-by: GLM-5.1 via Crush <crush@charm.land>
