Add dynamic CodeCov badge to README

[Copilot]

Description

Replace static coverage badge with dynamic CodeCov badge. The CI/CD pipeline already uploads coverage to CodeCov—this adds the missing badge to display it.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🎨 Code style update (formatting, renaming)
• ♻️ Refactoring (no functional changes)
• ⚡ Performance improvement
• ✅ Test update
• 🔧 Build/config update
• 🔒 Security fix

Related Issues

Closes #10

Changes Made

• Replace hardcoded coverage badge with dynamic CodeCov badge in README.md

# Before
![Coverage](https://img.shields.io/badge/coverage-90.66%25-brightgreen)

# After  
[![codecov](https://codecov.io/gh/Smart-AI-Memory/empathy-framework/branch/main/graph/badge.svg)](https://codecov.io/gh/Smart-AI-Memory/empathy-framework)

Note: The following infrastructure was already in place:

• codecov/codecov-action@v4 in .github/workflows/tests.yml
• codecov.yml with PR comment and threshold config

Testing

• All existing tests pass
• Added new tests for new functionality
• Tested on multiple Python versions (3.10, 3.11, 3.12)
• Tested on multiple platforms (Linux, macOS, Windows)
• Manual testing performed

Test Commands Run

# No test commands needed - documentation-only change

Checklist

• My code follows the project's code style (Black, Ruff)
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published
• I have updated the CHANGELOG.md (if applicable)
• Pre-commit hooks pass without errors

Screenshots (if applicable)

N/A - Badge will render after CODECOV_TOKEN secret is added to repository settings.

Additional Context

Remaining setup (user responsibility):

1. Create CodeCov account at https://codecov.io
2. Add CODECOV_TOKEN to GitHub repository secrets

License Acknowledgment

• I confirm that my contributions are made under the Fair Source License 0.9 and will automatically convert to Apache 2.0 on January 1, 2029
• I have read and agree to the Contributing Guidelines

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For Reviewers:

• Code quality and style
• Test coverage
• Documentation updates
• Breaking changes identified
• Security considerations reviewed
• Performance impact assessed

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Set up CodeCov integration for test coverage badge</issue_title>
<issue_description>## 📊 Enhancement: CodeCov Integration

Priority: Medium
Type: Enhancement
Timeline: Week 2-3

Goal

Add CodeCov integration to display test coverage badge and track coverage over time.

Benefits

• Visual test coverage indicator on README
• Coverage tracking across commits
• Pull request coverage reports
• Coverage trends over time

Implementation Steps

• Create CodeCov account at https://codecov.io
• Add CODECOV_TOKEN to GitHub repository secrets
• Update .github/workflows/tests.yml to upload coverage
• Add codecov badge to README.md
• Verify badge displays correctly
• Test coverage report on a PR

GitHub Actions Changes

Add to .github/workflows/tests.yml:

```yaml

• name: Upload coverage to Codecov
  uses: codecov/codecov-action@v3
  with:
  token: ${{ secrets.CODECOV_TOKEN }}
  files: ./coverage.xml
  fail_ci_if_error: true
  ```

Badge Markdown

```markdown

```

Resources

• CodeCov Docs: https://docs.codecov.com/docs/quick-start
• GitHub Action: https://github.com/codecov/codecov-action

Current Coverage

Package already generates coverage reports (coverage.xml). Just need to upload them.

Current coverage: 83.13% (per PyPI listing)</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Set up CodeCov integration for test coverage badge #5

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