/** At most this many dirty paths are stat-ed when the walk asks whether a lane still writes. */
export declare const MAX_ACTIVITY_STAT_PATHS = 500;
/** Do two readings hold the same dirty paths with the same status? */
export declare function sameTree(a: TreeSnapshot, b: TreeSnapshot): boolean;
/**
 * The newest modification time among a reading's dirty paths, or null when none can be read. This
 * catches a lane that keeps editing a file whose STATUS does not change (`M` stays `M`). A deleted
 * path cannot be read and is skipped; `sameTree` catches a deletion.
 */
export declare function newestChangeMs(cwd: string, snapshot: TreeSnapshot, stat?: (path: string) => {
    mtimeMs: number;
}): number | null;
/** One `git status` reading: the cwd's path inside the repository, and each dirty path's status. */
export interface TreeSnapshot {
    /** `git rev-parse --show-prefix`: "" at the repository root, else `sub/dir/`. */
    prefix: string;
    /** Repository-relative path → the two-letter porcelain status. */
    entries: Map<string, string>;
}
/** Null when `cwd` is not inside a git work tree, or git failed. */
export type TreeSnapshotReader = (cwd: string) => Promise<TreeSnapshot | null>;
/** At most this many delta lines are rendered; the rest are counted. */
export declare const MAX_TREE_DELTA_LINES = 50;
/**
 * Parse `git status --porcelain=v1 -z` output. A rename or copy entry carries its ORIGINAL path in
 * the next NUL-separated field, which is consumed here and not reported as a path of its own.
 */
export declare function parsePorcelainZ(text: string): Map<string, string>;
/**
 * The real reader. ⚠ Under vitest it reads nothing — returns null — unless a test injects its own
 * reader: a suite run inside a real checkout would otherwise append that checkout's live status to
 * every dispatch answer it asserts on. The `winenv.ts` guard, applied to a read.
 */
export declare const defaultTreeSnapshot: TreeSnapshotReader;
/**
 * Render the difference between two readings as the block `jobAnswer` appends. `scope` (paths or
 * globs relative to `cwd`) marks every path outside it `OUT OF SCOPE`; a path outside `cwd` itself is
 * always outside a declared scope. Without a scope nothing is marked.
 */
export declare function renderTreeDelta(cwd: string, before: TreeSnapshot, after: TreeSnapshot | null, scope: readonly string[] | undefined): string;