refactor: extract git identity config into a reusable composite action

Agent-Logs-Url: https://github.com/petesramek/polyline-algorithm-csharp/sessions/c4363748-3a51-4b83-9c29-575de1199116

Co-authored-by: petesramek <2333452+petesramek@users.noreply.github.com>

Author: Copilot

.github/actions/git/configure-identity/action.yml

@@ -0,0 +1,12 @@
+name: 'Configure git identity'
+author: 'Pete Sramek'
+description: 'Configures git user name and email from the last commit.'
+
+runs:
+  using: composite
+  steps:
+    - name: 'Configure git identity'
+      shell: bash
+      run: |
+        git config user.name "$(git log -n 1 --pretty=format:%an)"
+        git config user.email "$(git log -n 1 --pretty=format:%ae)"

.github/actions/git/push-changes/action.yml

@@ -87,12 +87,14 @@ runs:
         set -e
       working-directory: ${{ inputs.working-directory }}
 
+    - name: Configure git identity
+      if: ${{ fromJSON(steps.validate.outputs.has-changes) == '1' }}
+      uses: './.github/actions/git/configure-identity'
+
     - name: Push changes to ${{ github.head_ref || github.ref }}
       if: ${{ fromJSON(steps.validate.outputs.has-changes) == '1' }}
       shell: bash
       run: |
-        git config user.name "$(git log -n 1 --pretty=format:%an)"
-        git config user.email "$(git log -n 1 --pretty=format:%ae)"
         git commit -m '${{ inputs.commit-message }}'
         git pull --rebase origin ${{ github.head_ref || github.ref }}
         git push

.github/actions/github/create-release/action.yml

@@ -26,10 +26,7 @@ runs:
         echo "notes-start-tag-argument=${{ inputs.notes-start-tag != '' && format('--notes-start-tag {0}', inputs.notes-start-tag) || '' }}"
       shell: bash
     - name: 'Configure git identity'
-      shell: bash
-      run: |
-        git config user.name "$(git log -n 1 --pretty=format:%an)"
-        git config user.email "$(git log -n 1 --pretty=format:%ae)"
+      uses: './.github/actions/git/configure-identity'
     - name: 'Create git tag ${{ inputs.release-version }}'
       shell: bash
       run: |

.github/workflows/backtrack.yml

@@ -30,9 +30,7 @@ jobs:
           token: ${{ secrets.GH_ADMIN_TOKEN }}
 
       - name: 'Configure git'
-        run: |
-          git config user.name "$(git log -n 1 --pretty=format:%an)"
-          git config user.email "$(git log -n 1 --pretty=format:%ae)"
+        uses: './.github/actions/git/configure-identity'
 
       - name: 'Resolve backtrack targets'
         id: targets

.github/workflows/bump-version.yml

@@ -113,9 +113,7 @@ jobs:
           dotnet-version: ${{ env.dotnet-sdk-version }}
 
       - name: 'Configure git'
-        run: |
-          git config user.name "$(git log -n 1 --pretty=format:%an)"
-          git config user.email "$(git log -n 1 --pretty=format:%ae)"
+        uses: './.github/actions/git/configure-identity'
 
       - name: 'Create develop branch from main'
         run: |

.github/workflows/release.yml

@@ -358,11 +358,13 @@ jobs:
             echo "support-branch-exists=false" >> $GITHUB_OUTPUT
           fi
 
+      - name: 'Configure git identity'
+        if: ${{ steps.check-support-branch.outputs.support-branch-exists == 'false' }}
+        uses: './.github/actions/git/configure-identity'
+
       - name: 'Create support branch'
         if: ${{ steps.check-support-branch.outputs.support-branch-exists == 'false' }}
         run: |
-          git config user.name "$(git log -n 1 --pretty=format:%an)"
-          git config user.email "$(git log -n 1 --pretty=format:%ae)"
           git checkout -b "${{ steps.resolve-support-branch.outputs.support-branch }}"
           git push --set-upstream origin "${{ steps.resolve-support-branch.outputs.support-branch }}"