Revert duplicate issue checker to text-based matching

.github/workflows/check_duplicate_issues.yml

@@ -2,47 +2,28 @@ name: Check Duplicate Issues
 
 on:
   issues:
-    types: [opened]
+    types: [opened, edited]
 
 jobs:
-  check-duplicates:
-    if: github.event.action == 'opened'
+  check-duplicate:
     runs-on: ubuntu-latest
     permissions:
-      contents: read
       issues: write
+      contents: read
     steps:
-      - name: Install Claude Code
-        run: npm install -g @anthropic-ai/claude-code
-
-      - name: Check duplicates
-        env:
-          ANTHROPIC_API_KEY: ${{ secrets.LITELLM_VIRTUAL_KEY }}
-          ANTHROPIC_BASE_URL: ${{ secrets.LITELLM_BASE_URL }}
+      - name: Check for potential duplicates
+        uses: wow-actions/potential-duplicates@v1
+        with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PROMPT: |
-            A new issue has been created in the ${{ github.repository }} repository.
-
-            Issue number: ${{ github.event.issue.number }}
-
-            Lookup this issue with gh issue view ${{ github.event.issue.number }} --repo ${{ github.repository }}.
-
-            Search through existing issues (excluding #${{ github.event.issue.number }}) to find potential duplicates.
-
-            Use gh issue list --repo ${{ github.repository }} with relevant search terms from the new issue's title and description. Try multiple keyword combinations to search broadly. Check both open and recently closed issues.
-
-            Consider:
-            1. Similar titles or descriptions
-            2. Same error messages or symptoms
-            3. Related functionality or components
-            4. Similar feature requests
-
-            If you find potential duplicates, post a SINGLE comment on issue #${{ github.event.issue.number }} using gh issue comment ${{ github.event.issue.number }} --repo ${{ github.repository }} with this format:
-
-            _This comment was generated by an LLM and may be inaccurate._
-
-            This issue might be a duplicate of existing issues. Please check:
-            - #[issue_number]: [brief description of similarity]
-
-            If you find NO duplicates, do NOT post any comment. Stay silent.
-        run: claude -p "$PROMPT" --model sonnet --max-turns 10 --allowedTools "Bash(gh issue *)"
+          label: potential-duplicate
+          threshold: 0.6
+          reaction: eyes
+          comment: |
+            **⚠️ Potential duplicate detected**
+
+            This issue appears similar to existing issue(s):
+            {{#issues}}
+            - [#{{number}}]({{html_url}}) - {{title}} ({{accuracy}}% similar)
+            {{/issues}}
+
+            Please review the linked issue(s) to see if they address your concern. If this is not a duplicate, please provide additional context to help us understand the difference.