confidence

type Facts struct {
	// Cited is how many findings the proposal cited when distilled;
	// Living how many still exist in the store (findings age out with
	// the mining window).
	Cited, Living int
	// Events is the distinct-event count over the LIVING citations,
	// under the same collapse rule as the recurrence bar.
	Events int
	// Sources are the distinct evidence kinds among living citations,
	// fix tiers folded ("review", "fix"), sorted.
	Sources []string
	// NewestAge is the age of the newest living citation; zero when
	// nothing lives. Meaningful only when AgeKnown.
	NewestAge time.Duration
	// AgeKnown is false when no living citation carries a usable
	// timestamp — recency is then unknown, which is not the same as
	// "brand new".
	AgeKnown bool
	// DeadPaths counts living citations whose file no longer exists in
	// the workspace — guidance about deleted code.
	DeadPaths int
}

type Tier int