Report the latest deal check timestamp from Singularity as `LastVerified`

[masih]

Singularity periodically scans the deals snapshot data from the S3 endpoint; report the latest timestamp at which the check was performed as LastVerified in Motion.

Eventually, checks in Singularity should become more sophisticated to include latest timestamp of proof of replicaiton on chain. However, from Motion perspective reporting the date remains the same: the check timestamp comes from singularity and what the check means is dictated by Singularity.

Relates to #66

[elijaharita]

is this info already exposed by singularity or is it going to take a change there first?

[xinaxu]

Singularity will need to add a column for this timestamp first.
@masih

Eventually, checks in Singularity should become more sophisticated to include latest timestamp of proof of replicaiton on chain.

Are we thinking about including the proof of replication as the response from the same call or as part of a separate diagnose API

[masih]

@xinaxu Thank you for folagging.

I think the Deal entity in Singularity already has a UpdatedAt field which is also updated as part of deal tracking. Right?

I understand that the UpdatedAt timestamp does not directly represent verification timestamp, but it is a good first iteration considering we return zero-value time right now.

Once checks in signularity get more sophisticated and that timestamp gets separated then it should be a straightforward change in motion: we would simply return a different field instead of UpdatedAt.

I'll capture separate issues for refining this in Signularity.

In the meantime is there anything else that is blocking this issue @elijaharita @xinaxu ?

[xinaxu]

Makes sense to me