import { Type, type Static } from "typebox";
export declare const TODO_SCHEMA_VERSION: 1;
export declare const TODO_STATE_ENTRY = "pi-todo-state-v1";
export declare const TODO_STATE_EVENT = "pi-todo:state";
export declare const TODO_STATE_REQUEST_EVENT = "pi-todo:request-state";
export declare const LEGACY_MIGRATION_EVENT = "pi-goal-todo:migrated";
export declare const TODO_MAX_TASKS = 200;
export declare const TODO_TASK_KEY_MAX_LENGTH = 256;
export declare const TODO_TASK_SUBJECT_MAX_LENGTH = 2048;
export declare const TODO_TASK_DESCRIPTION_MAX_LENGTH = 16384;
export declare const TODO_TASK_MAX_DEPENDENCIES = 100;
export declare const TODO_PLAN_MAX_BYTES: number;
export declare const TodoTaskSchema: Type.TObject<{
    key: Type.TString;
    subject: Type.TString;
    description: Type.TOptional<Type.TString>;
    status: Type.TUnion<[Type.TLiteral<"pending">, Type.TLiteral<"in_progress">, Type.TLiteral<"completed">]>;
    dependsOn: Type.TOptional<Type.TArray<Type.TString>>;
}>;
export declare const TodoStateSchema: Type.TObject<{
    schemaVersion: Type.TLiteral<1>;
    revision: Type.TInteger;
    tasks: Type.TArray<Type.TObject<{
        key: Type.TString;
        subject: Type.TString;
        description: Type.TOptional<Type.TString>;
        status: Type.TUnion<[Type.TLiteral<"pending">, Type.TLiteral<"in_progress">, Type.TLiteral<"completed">]>;
        dependsOn: Type.TOptional<Type.TArray<Type.TString>>;
    }>>;
}>;
export declare const TodoRemovalSchema: Type.TObject<{
    key: Type.TString;
    reason: Type.TString;
}>;
export type TodoTask = Static<typeof TodoTaskSchema>;
export type TodoState = Static<typeof TodoStateSchema>;
export type TodoRemoval = Static<typeof TodoRemovalSchema>;
export declare function todoPlanUtf8Bytes(state: TodoState): number;
export declare function isTodoTask(value: unknown): value is TodoTask;
export declare function isTodoState(value: unknown): value is TodoState;
export declare function parseTodoState(value: unknown): TodoState | null;