fix(ci): fix upstream fetch depth in agent review (agent)

Co-authored-by: PR0M3TH3AN <[email protected]>

.github/workflows/agent-pr-review.yml

@@ -29,6 +29,11 @@ jobs:
           node-version: 20
           cache: 'npm'
 
+      - name: Add upstream remote
+        run: |
+          git remote add upstream https://github.com/PR0M3TH3AN/bitvid.git || true
+          git fetch upstream
+
       - name: Run Agent Review
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}