chore: migrate from Coveralls to CodeClimate for coverage reporting

- Replace Coveralls GitHub action with CodeClimate coverage reporter
- Add fetch-depth: 0 to checkout action for proper git history comparison
- Enable debug mode in CodeClimate action for better visibility
- Update README badges to use CodeClimate instead of Coveralls

Note: After merging, CC_TEST_REPORTER_ID secret needs to be added to the
repository settings from CodeClimate.

.github/workflows/test-code.yml

@@ -15,6 +15,8 @@ jobs:
     steps:
       - name: "Checkout source code"
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: "Install Poetry"
         run: pipx install poetry
@@ -41,13 +43,11 @@ jobs:
         run: |
           poetry run pytest --cov=src --cov-report=xml --cov-report=term-missing
 
-      - name: Upload coverage to Coveralls
-        uses: coverallsapp/github-action@v2
+      - name: Upload coverage to Code Climate
+        uses: paambaati/[email protected]
+        env:
+          CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          file: coverage.xml
-          flag-name: Unit Tests
-          fail-on-error: false
-          base-path: ${{ github.workspace }}
-          compare-ref: ${{ github.event.pull_request.base.ref || github.base_ref || 'main' }}
-          github-write-mode: true
+          coverageLocations: |
+            ${{github.workspace}}/coverage.xml:coverage.py
+          debug: true

README.md

@@ -1,7 +1,8 @@
 # Disability Max Ratings API
 
 [![Tests](https://github.com/department-of-veterans-affairs/disability-max-ratings-api/actions/workflows/test-code.yml/badge.svg)](https://github.com/department-of-veterans-affairs/disability-max-ratings-api/actions/workflows/test-code.yml)
-[![Coverage Status](https://coveralls.io/repos/github/department-of-veterans-affairs/disability-max-ratings-api/badge.svg?branch=ci-code-coverage)](https://coveralls.io/github/department-of-veterans-affairs/disability-max-ratings-api?branch=ci-code-coverage)
+[![Maintainability](https://api.codeclimate.com/v1/badges/YOUR_REPO_ID/maintainability)](https://codeclimate.com/github/department-of-veterans-affairs/disability-max-ratings-api/maintainability)
+[![Test Coverage](https://api.codeclimate.com/v1/badges/YOUR_REPO_ID/test_coverage)](https://codeclimate.com/github/department-of-veterans-affairs/disability-max-ratings-api/test_coverage)
 [![Poetry](https://img.shields.io/endpoint?url=https://python-poetry.org/badge/v0.json)](https://python-poetry.org/)
 ![Python Version from PEP 621 TOML](https://img.shields.io/badge/Python-3.12-blue)
 [![security: bandit](https://img.shields.io/badge/security-bandit-yellow.svg)](https://github.com/PyCQA/bandit)