velero: Add backup coverage panels (Phase 1)

[Pragati5-DEBUG]

Introduce a read-only Velero plugin that shows schedule coverage on Deployment, StatefulSet, PVC, and Namespace detail views, with install detection, plugin settings, tests, and manual-test fixtures.

Tracks kubernetes-sigs/headlamp#5198.

[itvi-1234]

Could you please break down the commits ?

[itvi-1234]

Could you please take a look?

[Pragati5-DEBUG]

@itvi-1234 Thanks for the review!

Documentation: Added JSDoc to the coverage types/helpers and useVeleroData / VeleroDataState.

Testing: npm test passes (13 unit tests). Manually verified on minikube with Velero + fixtures from velero/test-files/ — covered (nginx-demo, web StatefulSet) and not-covered cases. Details in velero/test-files/README.md.

[itvi-1234]

@Pragati5-DEBUG , I think we can also document other files too and add some details

[Pragati5-DEBUG]

@itvi-1234 Thanks — want to make sure I match what you have in mind:

1. package.json description — expand to describe the full Velero plugin (coverage panels on Deployment/STS/PVC/Namespace detail views, read-only Phase 1). OK?

2. Other file docs — planning JSDoc on the remaining public modules:

   • resources/velero.ts (Schedule/Backup wrappers)
   • useVeleroInstalled.ts
   • config.ts
   • cron.ts

   Anything else you had in mind (e.g. index.tsx, panel components, README)?

Happy to push once you confirm scope. Thanks!

[Pragati5-DEBUG]

@itvi-1234 Done — pushed an update:

• package.json description now describes the full Velero plugin (coverage on Deployment/STS/PVC/Namespace detail views, read-only).
• JSDoc added on resources/velero.ts, config.ts, useVeleroInstalled.ts, cron.ts, index.tsx, BackupCoveragePanelPure, and settings.tsx (in addition to the earlier coverage.ts / useVeleroData.ts docs).

Please take another look when you have time. Thanks!