ci: fix dup pr action

.github/workflows/duplicate-prs.yml

@@ -30,8 +30,8 @@ jobs:
       - name: Setup Bun
         uses: ./.github/actions/setup-bun
 
-      - name: Install opencode
-        run: curl -fsSL https://opencode.ai/install | bash
+      - name: Install dependencies
+        run: bun install
 
       - name: Build prompt
         env:
@@ -53,7 +53,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           PR_NUMBER: ${{ github.event.pull_request.number }}
         run: |
-          COMMENT=$(opencode run --agent duplicate-pr --print -f pr_info.txt "Check the attached file for PR details and search for duplicates")
+          COMMENT=$(bun script/duplicate-pr.ts -f pr_info.txt "Check the attached file for PR details and search for duplicates")
 
           gh pr comment "$PR_NUMBER" --body "_The following comment was made by an LLM, it may be inaccurate:_