ci(GitHub): auto-commit changes from jobs

* Added stefanzweifel/git-auto-commit-action@v6.0.1 to each job.
* Further added comment steps explaining the auto-commit.

Closes #8

Signed-off-by: Stefan Zimmermann <user@zimmermann.co>

Author: userzimmermann

.github/workflows/linting.yml

@@ -3,28 +3,65 @@ on:
   push:
   pull_request:
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   lint:
+    name: Lint w/ golangci-lint (auto-fix)
     runs-on: ubuntu-latest
-    permissions:
-      contents: write
-
     steps:
     - uses: actions/checkout@v5
       with:
         fetch-depth: 0
+        ref: ${{ github.head_ref || github.ref }}
 
     - name: Setup Go environment
       uses: actions/setup-go@v6
       with:
         go-version: 1.25.1
 
     - name: Run go mod tidy
-      run: go mod tidy
+      run: |
+          go mod tidy
 
     - name: Install & run golangci-lint
       uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8
       with:
         version: latest
         install-mode: "goinstall"
-        args: --fix
+
+        args: --enable godot --fix
+
+    - name: Auto-commit lint fixes
+      id: auto_commit
+      if: github.event_name == 'pull_request'
+      uses: stefanzweifel/git-auto-commit-action@778341af668090896ca464160c2def5d1d1a3eb0 # v6.0.1
+      with:
+        status_options: --untracked-files=no
+
+        commit_message: Auto-fix from ${{ github.workflow }} / ${{ github.job }} job
+        commit_user_name: github-actions[bot]
+        commit_user_email: github-actions[bot]@users.noreply.github.com
+
+    - name: Comment on PR about the auto-commit
+      if: github.event_name == 'pull_request' && steps.auto_commit.outputs.changes_detected == 'true'
+      uses: actions/github-script@v8
+      with:
+        script: |
+            const repositoryUrl = '${{ github.server_url }}/${{ github.repository }}'
+
+            await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body: `
+            **Auto-fix applied from ${{ github.workflow }}** / \`${{ github.job }}\` job
+
+            * Workflow run: ${repositoryUrl}/actions/runs/${{ github.run_id }}
+            * Fix commit: ${repositoryUrl}/commit/${{ steps.auto_commit.outputs.commit_hash }}
+
+            @${{ github.event.pull_request.user.login }}: `
+            + 'Please check the auto-changes, pull them, squash commits, & force-push to continue the PR review ...
+            })

pointer.go

@@ -44,3 +44,7 @@ func NotNilPtr[T any](name string, value *T) *T {
 	lo.Assertf(value != nil, "%s should not be a nil pointer", name)
 	return value
 }
+
+// bla
+func _() {
+}