Add auto-fix GitHub workflow for V3 validation

.github/workflows/auto-fix.yml

@@ -0,0 +1,93 @@
+name: Auto-fix V3 Validation Errors
+
+on:
+  pull_request_target:
+    branches:
+      - main
+    paths:
+      - '**.md'
+      - '**.yaml'
+      - 'ci/**'
+
+jobs:
+  auto-fix:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+
+    steps:
+      - name: Checkout PR branch
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r ci/requirements.txt
+
+      - name: Generate code blocks
+        run: python ci/copy_code_blocks.py
+        continue-on-error: true
+
+      - name: Run auto-fix validation
+        run: python -m ci.auto_fix_validation --apply
+        continue-on-error: true
+
+      - name: Check for changes
+        id: check_changes
+        run: |
+          if [[ -n $(git status --porcelain) ]]; then
+            echo "has_changes=true" >> $GITHUB_OUTPUT
+            echo "Changes detected:"
+            git status --short
+          else
+            echo "has_changes=false" >> $GITHUB_OUTPUT
+            echo "No changes detected"
+          fi
+
+      - name: Commit and push changes
+        if: steps.check_changes.outputs.has_changes == 'true'
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git add .
+          git commit -m "Auto-fix V3 validation errors [bot]"
+          git push
+
+      - name: Comment on PR
+        if: steps.check_changes.outputs.has_changes == 'true'
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const issue_number = context.issue.number;
+            const comment_body = `🤖 **Auto-fix Applied**
+
+            I've automatically fixed common V3 validation errors in this PR:
+            - Generated code blocks from markdown files
+            - Fixed purple_chat_link URLs
+            - Fixed slug format issues
+            - Updated agent_capabilities
+            - Added missing solution_tags
+            - Removed invalid fields
+
+            The changes have been committed and pushed. Please review the auto-fixes and ensure they're correct.
+
+            The validation workflow will run separately to verify all fixes.`;
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue_number,
+              body: comment_body
+            });