Deployment registry cards show “No deployment” incorrectly

[mmabrouk]

In main, the deployment registry cards show No deployment even though deployments exist.

[linear]

AGE-3694

[dosubot]

The "No deployment" display is controlled by DeploymentCard which shows that tag when env.deployed_variant_name is falsy.

This is likely a regression from recent environment endpoint changes:

1. PR #3627 (Feb 2026) - Migrated the environments endpoints while keeping legacy endpoints. This may have affected how deployed_variant_name is populated in API responses.

2. PR #3679 (Feb 2026) - Modified how environments are represented as deployments, changing how environment revisions are calculated.

I'd suggest checking the API response from /apps/{appId}/environments to see if deployed_variant_name is returning null when it should have a value.

To reply, just mention @dosu.

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