node condtion remediation

[runzhen]

• check the node condition, and reboot the node if needed.
• merge the remediation code with the existing drift remediation loop.

[Copilot]

Pull request overview

This PR adds “node reboot required” detection/remediation by surfacing a reboot-needed signal in the status snapshot, turning it into a drift finding, and introducing a reboot remediation action.

Changes:

• Extend status.NodeStatus with a NeedReboot flag and populate it during status collection by inspecting the node’s KernelDeadlock condition.
• Add a new drift detector (RebootDetector) that emits a reboot finding when NeedReboot is true.
• Add a new drift remediation action (reboot) that triggers a system reboot via systemctl, plus unit tests for the detector.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
pkg/status/types.go	Adds NeedReboot to the persisted node status schema.
pkg/status/collector.go	Computes NeedReboot by reading boot time and querying node conditions.
pkg/drift/detector.go	Introduces RemediationActionReboot.
pkg/drift/defaults.go	Registers RebootDetector in default detector set.
pkg/drift/node_reboot.go	New detector that converts NeedReboot into a drift finding/remediation plan.
pkg/drift/node_reboot_test.go	Unit tests for reboot detector behavior.
pkg/drift/remediation.go	Adds reboot remediation runner that invokes systemctl reboot.

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 6 comments.

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

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[Copilot]

@runzhen I've opened a new pull request, #134, to work on those changes. Once the pull request is ready, I'll request review from you.