export type BaselineSlot = "baseline" | "pending";
export interface BaselineStore {
    appDir: string;
    /** Absolute `.git` directory, or null when the app is not in a repo. */
    gitDir: string | null;
    /** Absolute work-tree root, or null when the app is not in a repo. */
    repoRoot: string | null;
    /** Repo-relative posix prefix the app lives at ("" when app === repo root). */
    prefix: string;
    /** Stable id used in ref names and tarball filenames. */
    slug: string;
}
export interface BaselineWriteMeta {
    template: string;
    templateRef: string;
    coreVersion?: string;
}
export interface BaselineWriteResult {
    kind: "git-ref" | "tarball";
    /** Ref name or tarball path. */
    location: string;
    /** Commit sha for git refs. */
    commit?: string;
    configuredRefspecs: string[];
}
export declare function resolveBaselineStore(appDir: string): BaselineStore;
export declare function baselineRefName(store: BaselineStore, slot: BaselineSlot): string;
export declare function baselineTarballPath(store: BaselineStore, slot: BaselineSlot): string;
export declare function baselineExists(store: BaselineStore, slot: BaselineSlot): boolean;
export declare function baselineDescription(store: BaselineStore, slot: BaselineSlot): string | null;
/**
 * Snapshot `sourceDir` into the baseline store. Writes through a temporary
 * index and an out-of-tree work-tree so HEAD, the real index, and the working
 * tree are untouched.
 */
export declare function writeBaseline(store: BaselineStore, sourceDir: string, slot: BaselineSlot, meta: BaselineWriteMeta): BaselineWriteResult;
/** Point `slot` at whatever `from` currently points at. */
export declare function promoteBaseline(store: BaselineStore, from: BaselineSlot, to: BaselineSlot): boolean;
export declare function clearBaseline(store: BaselineStore, slot: BaselineSlot): void;
/**
 * Extract a stored baseline into a fresh temp directory whose root is the app
 * root. Returns null when the slot is empty. Callers own the returned dir.
 */
export declare function materializeBaseline(store: BaselineStore, slot: BaselineSlot): string | null;
/**
 * Teach the repo's remote to carry `refs/agent-native/*` so baselines survive
 * clone and push. Returns the refspecs it actually added.
 */
export declare function ensureBaselineRefspecs(store: BaselineStore): string[];
/** Uncommitted changes under the app dir, as porcelain lines. */
export declare function appDirtyPaths(store: BaselineStore): string[];
/** Make each path segment safe for `git check-ref-format`. */
export declare function sanitizeRefPath(value: string): string;
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