import type { ImportConfig } from "../../platform/config/contract.js";
export type { ImportConfig };
import type { TokenEstimator } from "../../platform/tokens/contract.js";
export type { TokenEstimator };
import type { AgentId, CanonicalSession, CanonicalTurn, HomePath, RepoSnapshot, SessionId, SessionRef, SourceProvenance, TargetProfile, ToolCallRecord, ToolEffect, TurnKind, TurnRole } from "../../session/contract.js";
export type { AgentId, CanonicalSession, CanonicalTurn, HomePath, RepoSnapshot, SessionId, SessionRef, SourceProvenance, TargetProfile, ToolCallRecord, ToolEffect, TurnKind, TurnRole, };
/** Why a turn did not cross over (FR-31, FR-54). */
export type DropReason = "budget" | "broken-tail";
/** Why a turn is kept whatever the budget says (FR-32). */
export type PinReason = "first-request" | "recent-turn" | "summary" | "changed-files";
/** One turn the rules removed. */
export interface TurnDrop {
    /** The turn's index in the source session. */
    index: number;
    reason: DropReason;
}
/** One turn the rules protected. */
export interface TurnPin {
    /** The turn's index in the source session. */
    index: number;
    reason: PinReason;
}
/** The result of applying requirement sections D and E to one source session. */
export interface TransferPlan {
    target: TargetProfile;
    /** The source metadata, unchanged. */
    provenance: SourceProvenance;
    /** Only the turns that cross over, in source order. */
    turns: CanonicalTurn[];
    pins: TurnPin[];
    drops: TurnDrop[];
    keptTurnCount: number;
    droppedTurnCount: number;
    /** Tool result bodies the rules removed (FR-24, FR-25). */
    bodiesDropped: number;
    /** Estimated cost of the kept turns, in tokens. */
    estimatedTokens: number;
    /** budgetShare multiplied by the target window, rounded down (FR-29, FR-30). */
    budgetTokens: number;
    /** True when an incomplete trailing tool call was removed (FR-54, FR-55). */
    brokenTailDropped: boolean;
    /** Set when the pinned content alone exceeds the budget. The import cannot run (FR-33). */
    blockedReason: string | null;
}
/** Applies requirement sections D and E. Pure: the same input always gives the same plan. */
export interface TransferRules {
    apply(session: CanonicalSession, target: TargetProfile, config: ImportConfig, estimator: TokenEstimator): TransferPlan;
}