ci: replace Scrutinizer with Codecov; fix README badges

- Remove .scrutinizer.yml
- Add PCOV coverage + codecov/codecov-action@v4 to CI workflow
- Fix broken GitHub Actions badge (was pointing to old repo/workflow)
- Drop 3 Scrutinizer badges, add CI + Codecov badges

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ikidnapmyself

.github/workflows/ci.yml

@@ -38,6 +38,7 @@ jobs:
         with:
           php-version: '8.3'
           extensions: mbstring, pdo, pdo_mysql, xml, curl
+          coverage: pcov
 
       - name: Copy .env
         run: php -r "file_exists('.env') || copy('.env.example', '.env');"
@@ -65,4 +66,10 @@ jobs:
         run: php artisan passport:install --no-interaction
 
       - name: Run Tests
-        run: vendor/bin/phpunit
+        run: vendor/bin/phpunit --coverage-clover coverage.xml
+
+      - name: Upload Coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          files: coverage.xml
+          fail_ci_if_error: false

.scrutinizer.yml

@@ -1,9 +1,7 @@
-![Laravel](https://github.com/ikidnapmyself/pp-api/workflows/Laravel/badge.svg?branch=master)
-[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/swinn-io/server/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/swinn-io/server/?branch=master)
-[![Code Coverage](https://scrutinizer-ci.com/g/swinn-io/server/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/swinn-io/server/?branch=master)
-[![Build Status](https://scrutinizer-ci.com/g/swinn-io/server/badges/build.png?b=master)](https://scrutinizer-ci.com/g/swinn-io/server/build-status/master)
+[![CI](https://github.com/swinn-io/server/actions/workflows/ci.yml/badge.svg)](https://github.com/swinn-io/server/actions/workflows/ci.yml)
+[![codecov](https://codecov.io/gh/swinn-io/server/branch/master/graph/badge.svg)](https://codecov.io/gh/swinn-io/server)
 [![StyleCI](https://github.styleci.io/repos/276172517/shield?branch=master)](https://github.styleci.io/repos/276172517?branch=master)
- [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 ## About Swinn
 
 @todo