Interface UsageTracker

internal/usage/usage.go:9–12

UsageTracker records usage events. Always allows the action (no quota enforcement).

// UsageTracker records usage events. Always allows the action (no quota enforcement).
type UsageTracker interface {
	// RecordAndCheck records a usage event. Always returns true.
	RecordAndCheck(ctx context.Context, userID, agentID, domain, direction string) (allowed bool, err error)
}

// LiveUsageTracker is the real implementation backed by the billing store.
type LiveUsageTracker struct {