/**
 * root-guard.ts
 *
 * Pure helpers and constants for WorkspaceCheckpointManager's root-safety
 * guards: deciding whether a resolved workspace root is too broad to snapshot,
 * and building the honest refusal messages used both for automatic-subscription
 * skips and for rejected explicit `create()` calls.
 *
 * Kept separate from manager.ts so the guard policy (and its wording) is
 * unit-testable in isolation and the manager file stays within its line cap.
 */
/** Constructor option (and log-facing name) that opts a manager into snapshotting a broad root (home, fs root, or the daemon state dir). */
export declare const BROAD_ROOT_OVERRIDE = "allowBroadRoot";
/** Constructor option (and log-facing name) that opts a manager into a first snapshot whose sweep exceeds the file-count ceiling. */
export declare const LARGE_FIRST_SNAPSHOT_OVERRIDE = "allowLargeFirstSnapshot";
/**
 * Default ceiling for the first-ever snapshot's file sweep. Deliberately
 * generous: a real source tree (with node_modules/build output gitignored)
 * sits far below this, while a mistaken sweep of a home directory or an
 * over-broad root blows past it, the exact case that produced an orphaned
 * multi-GiB checkpoint store rooted at $HOME.
 */
export declare const DEFAULT_MAX_FIRST_SNAPSHOT_FILES = 50000;
/**
 * Decide whether `root` is too broad to auto-snapshot. Returns a short,
 * human-readable reason when it is (filesystem root, the user's home
 * directory, or the daemon state directory `~/.goodvibes`), or `null` when the
 * root is a normal project directory. Paths are compared by their canonical
 * (realpath-resolved where possible) form so symlinked homes still match.
 */
export declare function broadRootReason(root: string, homeDir: string, daemonStateDir: string): string | null;
/** Honest, override-naming message for a refused broad root. */
export declare function broadRootRefusalMessage(root: string, reason: string): string;
/** Honest, count-and-override-naming message for a refused oversized first snapshot. */
export declare function firstSnapshotTooLargeMessage(root: string, count: number, limit: number): string;
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