remove existing release

.github/workflows/planequery-aircraft-daily-release.yaml

@@ -321,6 +321,13 @@ jobs:
           echo "zip_basename=$ZIP_BASENAME" >> "$GITHUB_OUTPUT"
           echo "name=planequery-aircraft snapshot ($DATE)${BRANCH_SUFFIX}" >> "$GITHUB_OUTPUT"
 
+      - name: Delete existing release if exists
+        run: |
+          gh release delete "${{ steps.meta.outputs.tag }}" --yes 2>/dev/null || true
+          git push --delete origin "refs/tags/${{ steps.meta.outputs.tag }}" 2>/dev/null || true
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Create GitHub Release and upload assets
         uses: softprops/action-gh-release@v2
         with: