Deep linking not opening by default.

Despite a correctly configured and verified assetlinks.json (confirmed
matching package name and SHA-256 fingerprint via your own validator, and
confirmed served correctly across regions), multiple test devices show
"0 verified links" in Android's Open by default settings after fresh
installs. This requires manual "Add link" intervention on every device
to work. Is there a known issue with how Median's Android build triggers
or supports Android's automatic domain verification (Digital Asset
Links)? What can we check on the build side?