Remove redundant commit extraction step from workflow

### 🔧 Improvements
- Deleted unnecessary step for collecting commits manually in the `version-and-publish` workflow
- Relied on Claude action for streamlined changelog generation
- Updated API key naming for compatibility with new Claude token system

.github/workflows/version-and-publish.yml

@@ -97,22 +97,6 @@ jobs:
           echo "source-version=$SOURCE_VERSION" >> $GITHUB_OUTPUT
           echo "target-version=$TARGET_VERSION" >> $GITHUB_OUTPUT
 
-      - name: Get commit information for Claude
-        id: commits
-        run: |
-          # Get commits since last tag
-          LAST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
-          if [ -z "$LAST_TAG" ]; then
-            COMMITS=$(git log --oneline --no-merges --since="1 week ago" || echo "No recent commits")
-            echo "📝 Getting commits since 1 week ago (no previous tags found)"
-          else
-            COMMITS=$(git log --oneline --no-merges ${LAST_TAG}..HEAD || echo "No new commits")
-            echo "📝 Getting commits since tag: $LAST_TAG"
-          fi
-
-          echo "Commits found:"
-          echo "$COMMITS"
-
       - name: Generate changelog with Claude
         uses: anthropics/claude-code-action@v1
         with:
@@ -145,7 +129,7 @@ jobs:
             The recent commits to analyze are visible in the git history. Please examine them and create a comprehensive changelog entry.
 
             If CHANGELOG.md doesn't exist, create it with a proper header and the new release section.
-          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
 
       - name: Read generated changelog
         id: changelog