pytest-cov report for src/

[askmy-stack]

Background

Identified during OSS audit v2 of meridian.

Problem Statement

No coverage report.

Proposed Solution

Coverage in CI.

Acceptance Criteria

• Implementation complete
• Tests pass
• Documented in README or docs/

Files / Modules Affected

.github/workflows/ci-cd.yml

---

Suggested labels: priority:low, good first issue, category:testing
Milestone: v2.0-features
OSS Audit: Master Backlog v2