[WIP] Fix documentation for workflow names and version state

[Codex]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

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This section details on the original issue you should resolve

<issue_title>bug: docs reference nonexistent workflow names and outdated branch/version state</issue_title>
<issue_description>## Summary
Core documentation still references a nonexistent claude-code-review.yml, describes dev as the default branch, and shows stale version metadata.

Evidence

• README.md:14 still shows version 1.2.4.
• VERSION and CHANGELOG.md disagree on the current release.
• README.md, CLAUDE.md, documentation/ARCHITECTURE.md, and documentation/operator/CICD.md reference claude-code-review.yml, but the repo contains .github/workflows/code-review.yml.
• documentation/dev/CONTRIBUTING.md still describes dev as the default development branch.

Impact

• Contributors and operators get incorrect workflow and branch guidance.
• Release/version state is ambiguous.

Expected outcome

Normalize workflow references, branch model documentation, and version metadata across README, docs, and supporting files.</issue_description>

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