Add Test-Coverage Reporting and Badge

[N-thnI]

Description

Implementation work for: Add test-coverage reporting and a coverage badge, within the vero-audit-guard tooling track.

Problem Statement

CI runs tests but does not report coverage anywhere, so there is no visibility into which parts of the codebase remain untested (relevant given the many untested modules already identified).

Proposed Changes

• Enable --coverage in jest configs and publish a coverage summary in CI logs
• Add a coverage badge to the README (via CI artifact or a badge service)
• Set a minimum coverage threshold in CI to prevent regressions

Technical Implementation Scaffolding

• Target Repository: vero-audit-guard
• Target Path: .github/workflows/, root/README.md
• Branch Naming: chore/issue--add-coverage-reporting-badge
• Authority Context: Tooling / non-code

Acceptance Criteria

• CI reports coverage percentage on every run
• README displays an up-to-date coverage badge

Definition of Done

• Reviewed by lead maintainer
• Pull request merged via verified status check

[emmyokolo2525-cyber]

Am a full-Stack Engineer focused on frontend, backend, APIs, automation, and modern web technologies. Passionate about solving real-world problems, contributing to open source, and delivering clean, scalable, review-ready solutions.

[Yasir-TechGuy]

Hi Maintainer, will like to work on this issue, have on work on your project before. will do a great job aganin

[ayaanoncrypto]

I have experience with TypeScript, Jest, CI workflows, and test coverage tooling. I reviewed this issue and can configure the audit-guard CI workflow to publish coverage on every run, add a maintained README coverage badge, and enforce a minimum threshold to prevent regressions. I will keep the change focused on the existing Jest setup, verify the workflow configuration, and submit a review-ready pull request with passing checks.