- convert all test workflows to reusable workflow_call
- add central CI workflow for branches and PRs
- add mark-stable workflow triggered on main pushes
- ensure stable tag updates only after all tests succeed
- remove duplicated triggers from test workflows
`
https://chatgpt.com/share/693aa4a6-7460-800f-ba47-cfc15b1b2236
- Split virgin tests into separate root and user GitHub Actions workflows
(test-virgin-root, test-virgin-user) and adjust Arch container flows
- Introduce scripts/installation/venv-create.sh and reuse it from
scripts/installation/main.sh with separate root/system and user/dev paths
- Add PKGMGR architecture & setup map (assets/map.png) and section in README
with link to the up-to-date master page
- Simplify README by removing outdated Docker quickstart, usage examples,
and AI footer
- Extend .gitignore to exclude src/source artifacts
https://chatgpt.com/share/6939bbfe-5cb0-800f-8ea8-95628dc911f5
