add note about metric recorder

[sourcehawk]

No description provided.

[Copilot]

Pull request overview

Adds documentation to highlight the ReconcileContext.Metrics dependency used for condition-metrics recording during component reconciliation.

Changes:

• Documented the Metrics field in docs/component.md and noted the metrics recorder implementation source.
• Updated the README Quick Start ReconcileContext snippet to include Metrics: r.Metrics.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
docs/component.md	Adds a note explaining that a Metrics recorder is required and links to the recommended implementation.
README.md	Updates the Quick Start reconcile snippet to pass a Metrics recorder into ReconcileContext.

[Copilot]

The text says metrics are recorded for every condition state transition, but the current implementation calls the Metrics recorder every time setStatusCondition runs (even when the condition didn’t change). Consider rewording to reflect that the recorder is invoked on each reconciliation/condition set, with transitions reflected via LastTransitionTime rather than being the only time RecordConditionFor is called.

Suggested change

	The `Metrics` field is required. The framework records Prometheus metrics for every condition state transition during
	reconciliation. The recorder implementation is provided by
	[go-crd-condition-metrics](https://github.com/sourcehawk/go-crd-condition-metrics).
	The `Metrics` field is required. The framework invokes the Prometheus metrics recorder whenever it updates a component
	condition during reconciliation; condition state transitions are reflected via each condition's `LastTransitionTime`.
	The recorder implementation is provided by [go-crd-condition-metrics](https://github.com/sourcehawk/go-crd-condition-metrics).

[Copilot]

The Quick Start snippet now references r.Metrics, but README doesn’t explain what this is or how to construct a component.Recorder (e.g., via go-crd-condition-metrics) or what a minimal/no-op implementation looks like for users who don’t want metrics. Adding a short note/link near this snippet would prevent copy/paste confusion.