audit every operator-backed application for a missing dependsOn edge #3850

Two operator-backed applications shipped without a dependsOn edge to the operator that serves their CRD: etcd, fixed in #3817, and mongodb, fixed in #3845. Both were found by accident while working on something else, not by looking.

The failure is quiet in both directions. At install a tenant can create the application before the CRD exists, and its HelmRelease fails with no matches for kind .... In CI the operator's own package reaches no runnable suite, so every change to it escalates to the full 21-suite run.

Worth walking every *-application source in packages/core/platform/sources/ against the apiVersion its chart actually renders and confirming the edge, rather than waiting for the third one to turn up.