[codeforester]

Summary

• align README, versioning policy, and v2 quickstart with the published v2.1.0 commit
• correct annotated-tag wording and process-module guidance
• make the README current-release pin a tested tag/commit contract

Validation

• git diff --check
• bash -n tests/docs-contract.sh
• tests/docs-contract.sh

Fixes #552

[codeforester]

Review at the current head: the pins, commit (36fec50, verified against the v2.1.0 tag), "annotated" wording, quickstart note, and the release-process step are all correct, and CI is green. Ready to merge. One non-blocking note:

• The new check in tests/docs-contract.sh resolves the release tag with git rev-parse --verify "${readme_current_release}^{commit}", so it fails in a checkout that has no tags (for example a shallow clone or a source tarball). CI passes today, so the hosted checkout fetches tags. Consider skipping that last comparison with a clear message when the tag is absent, so contributors on tag-less clones are not blocked.