import type { SpecRequirement, SpecScenario, SprintFile, Task } from '../types';
declare const TASK_FIELDS: readonly ["title", "description", "context", "acceptance_criteria", "files_to_touch", "depends_on", "scenario_refs"];
type TaskField = typeof TASK_FIELDS[number];
type TaskUpdate = Pick<Task, 'id'> & (Partial<Pick<Task, TaskField>> | {
    action: 'cancel';
    reason: string;
});
type RequirementUpdate = SpecRequirement | {
    id: string;
    action: 'remove';
};
export interface ActivePlanInput {
    scope?: string;
    sprint: {
        n: number;
        slug: string;
    };
    reason: string;
    tasks: TaskUpdate[];
    requirements: RequirementUpdate[];
    scenarios: SpecScenario[];
}
export interface ActivePlanChange {
    target: string;
    field: string;
    before: unknown;
    after: unknown;
}
export interface ActivePlanPreview {
    scope: string;
    sprint: {
        n: number;
        slug: string;
    };
    digest: string;
    reason: string;
    changes: ActivePlanChange[];
    affectedTaskIds: string[];
    invalidatedTaskIds: string[];
    changedRequirementIds: string[];
    changedScenarioIds: string[];
    /** Why each affected task must be revalidated; one row per affectedTaskIds entry. */
    taskImpact: ActivePlanTaskImpact[];
    /** Affected tasks whose recorded evidence stays as reference material, not renewed approval. */
    retainedEvidenceTaskIds: string[];
    projected: SprintFile;
}
/** edited: definition changed or cancelled; scenario: consumes a changed scenario; dependency: depends on an affected task. */
export interface ActivePlanTaskImpact {
    taskId: string;
    cause: 'edited' | 'scenario' | 'dependency';
    via: string[];
}
/** Closed input surface: task field updates and full requirement/scenario definitions, never JSON paths. */
export declare function parseActivePlanInput(raw: unknown): ActivePlanInput;
/** Read-only preparation; includes state, input, policy and inspected history in the decision digest. */
export declare function prepareActivePlan(scope: string, input: ActivePlanInput): ActivePlanPreview;
/** Single-file transaction: contract changes and invalidation commit together, never via the ordinary multi-write plan. */
export declare function applyActivePlan(scope: string, input: ActivePlanInput, digest: string): ActivePlanPreview;
export {};
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