explain

type Topic struct {
	// Key is the lookup token, e.g. "node-health", "version-skew", "fleet-score".
	Key string
	// Aliases are additional tokens that resolve to this entry.
	Aliases []string
	// Title is the human-readable heading.
	Title string
	// Summary is a single-paragraph plain-English explanation.
	Summary string
	// Severity describes how Fleetsweeper assigns critical/warning/info.
	Severity string
	// HowComputed describes the data path that produces the finding.
	HowComputed string
	// Remediation lists the recommended fixes, in priority order.
	Remediation []string
	// Probes lists kubectl-or-similar commands to investigate locally.
	Probes []string
	// Related lists other topic keys an operator may want to read next.
	Related []string
}