⚠️ improve capi provider

[guilhem]

Description

• Refactors the CAPI provider to be constructed without a manager and configured via an explicit SetupWithManager.
• Adds kubeconfig hashing to detect changes and re-engage clusters when configs rotate.
• Improves cluster lifecycle management (cache sync, removal, indexers) and simplifies the startup flow.

Key changes

• Updates the example to build the provider first, then create the multi-cluster manager, and start a single manager instance.
• The provider now:
  • reads raw kubeconfig bytes and parses locally,
  • detects kubeconfig changes via SHA-256,
  • re-engages clusters when kubeconfig changes,
  • tracks engaged clusters with RW locks and exposes list functionality.
• Field indexers apply to existing and future clusters without holding locks during indexing.

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[embik]

Hey @guilhem, this is a great set of changes, thank you for bringing the CAPI provider more in line with the remaining providers in this repository. I have two comments.

In addition, I have a question: Your description has references (?) like F30844c7L94R94. What is that?

[guilhem]

Hey @guilhem, this is a great set of changes, thank you for bringing the CAPI provider more in line with the remaining providers in this repository. I have two comments.

Thanks :)

I jsut how to fix tests.

In addition, I have a question: Your description has references (?) like F30844c7L94R94. What is that?

Copilot "tried" to generate a description
I changed to another

[embik]

/approve

Looks great, thanks for the contribution! It's applying all of our learnings from other providers to the CAPI one, so apologies to users who this breaks for. But it's necessary before it diverges even more.

[k8s-ci-robot]

LGTM label has been added.

Details

Git tree hash: 8d1195cca751376c6c099c66924def2792ce063d

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: embik, guilhem

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Details

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• OWNERS [embik]

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[embik]

Note to release manager: This is a breaking change and should not go out in a patch release.