🔧 Add CHANGELOG and release workflow for versioning

.github/workflows/release.yml

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+name: 📝Release
+
+on:
+    push:
+        tags:
+            - 'v*'
+
+jobs:
+    release:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+              with:
+                  fetch-depth: 0
+
+            - name: Verify tag is on master
+              run: |
+                  git fetch origin master
+                  if ! git merge-base --is-ancestor "${{ github.sha }}" origin/master; then
+                    echo "::error::Tag is not on master — skipping release"
+                    exit 1
+                  fi
+
+            - name: Extract release notes from CHANGELOG
+              id: changelog
+              run: |
+                  VERSION="${{ github.ref_name }}"
+                  VERSION_NUMBER="${VERSION#v}"
+
+                  RELEASE_NOTES=$(awk -v ver="$VERSION_NUMBER" '
+                    $0 ~ "^## " ver "$" || $0 ~ "^## \\[" ver "\\]" { found=1; next }
+                    found && /^## / { exit }
+                    found { print }
+                  ' CHANGELOG.md | sed '/^[[:space:]]*$/{ /./!d }')
+
+                  if [ -z "$RELEASE_NOTES" ]; then
+                    RELEASE_NOTES="Release ${VERSION_NUMBER}"
+                  fi
+
+                  # Use multiline output via environment file
+                  {
+                    echo "notes<<EOF"
+                    echo "$RELEASE_NOTES"
+                    echo "EOF"
+                  } >> "$GITHUB_OUTPUT"
+
+            - name: Create GitHub Release
+              env:
+                  GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+              run: |
+                  VERSION="${{ github.ref_name }}"
+                  gh release create "$VERSION" \
+                    --title "$VERSION" \
+                    --notes "${{ steps.changelog.outputs.notes }}"

CHANGELOG.md

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+# Changelog
+
+## 4.2.0 — 2026-02-26
+
+- Updated `squizlabs/php_codesniffer` to version 3.13.5.
+
+## 4.1.1 — 2024-12-05
+
+- Added fix for missing array key in the yoda sniff for the do-while check.
+
+## 4.1.0 — 2024-02-21
+
+- Remove obsolete `bin/php-code-validator` from composer.
+
+## 4.0.0 — 2023-07-20
+
+- Removed binary executable as it added maintenance overhead (dependency to composer internals) without enough benefits.
+
+## 3.2.4 — 2023-07-18
+
+- Fixed shell interpreter for non-bash environments.
+
+## 3.2.3 — 2023-03-24
+
+- Add sniff to make and CI to apply code style check on self.
+
+## 3.2.2 — 2023-03-23
+
+- Remove `ReturnTypeSniff` with tests and from rulesets as it was too restrictive; use phpstan instead.
+- Add GitHub workflow for testing in CI.
+
+## 3.2.1 — 2022-08-29
+
+- Fixed issue with path on Composer 2.
+- Updated Composer to 2.4.1.
+
+## 3.2.0 — 2020-10-15
+
+- Added support for `implements` when checking for fully qualified class names.
+- Added support for PHP 7.4 by updating shipped `composer.phar`.
+
+## 3.1.0 — 2020-10-14
+
+- Improvements to `FullyQualifiedSniff`.
+
+## 3.0.0 — 2020-10-05
+
+- Updated from PSR-2 to PSR-12.
+
+## 2.3.0 — 2020-10-02
+
+- No release notes.
+
+## 2.1.0 — 2017-10-13
+
+- Allow execution of tests on Windows machines.
+- Switch preferred way of usage from shell script to using phpcs directly.
+- Allow usage of simple data type `resource` as return type.
+
+## 1.0.1 — 2017-09-08
+
+- No release notes.
+
+## 1.0.0 — 2017-09-08
+
+- Initial release.