curate

type Agent struct {
	Passes []Pass
	Log    *slog.Logger
}

type ClosedPRLister interface {
	ListClosedUnmergedPRsByLabel(ctx context.Context, label string) ([]providers.CuratedIssue, error)
}

type ClosedPRSuppression struct {
	Forge ClosedPRLister
}

type Dedup struct {
	Forge     Forge
	Threshold float64 // title-Jaccard fallback threshold for markerless PRs; default 0.6 when 0
	Log       *slog.Logger
}

type Forge interface {
	ListPRsByLabel(ctx context.Context, label string) ([]providers.CuratedIssue, error)
	ListIssuesByLabel(ctx context.Context, label string) ([]providers.CuratedIssue, error)
	Comment(ctx context.Context, number int, body string) error
	ReplaceLabel(ctx context.Context, number int, remove, add string) error
	Close(ctx context.Context, number int) error
	OpenIssue(ctx context.Context, inv providers.Investigation) (providers.Ref, error)
}

type LedgerResolutionChecker struct {
	Ledger interface {
		Episodes() ([]outcome.Episode, error)
	}
}

type Lifecycle struct {
	Forge      Forge
	StaleAfter time.Duration    // 0 disables the sweep
	Now        func() time.Time // injectable clock; nil ⇒ time.Now
	Log        *slog.Logger
}

type Pass interface {
	Run(ctx context.Context) error
}

type Queue struct {
	Forge   Forge
	Checker ResolutionChecker
	Log     *slog.Logger
}

type Recurrence struct {
	Forge  Forge
	Ledger interface {
		Episodes() ([]outcome.Episode, error)
	}
	Threshold int // default 3 when 0
	// Suppressed, when set, is the set of KB entries a human closed WITHOUT merging
	// (keyed by DupFingerprint). Their episodes are counted SEPARATELY — silently,
	// keyed on the fingerprint — and, past the threshold, escalate via a knowledge-gap
	// issue that LINKS the closed PR ("closed unmerged but recurred N times —
	// reconsider?") instead of the plain gap message. A close-without-merge is a
	// deliberate "no": we respect it and never reopen the PR. Nil disables the branch
	// (behaviour is then identical to the pre-suppression pass).
	Suppressed SuppressionSource
	Log        *slog.Logger
}

type ResolutionChecker interface {
	IsResolved(ctx context.Context, pr providers.CuratedIssue) (bool, error)
}

type SuppressedEntry struct {
	Fingerprint string // curator DupFingerprint (resource+cause); the join key against ledger episodes
	PRNumber    int    // the closed-unmerged KB PR to reference in the escalation
	Reason      string // the close-reason label, when one distinguishes it (e.g. "wontfix"); "" otherwise
}

type SuppressionSource interface {
	Suppressed(ctx context.Context) (map[string]SuppressedEntry, error)
}