/** Writes an ownership marker inside a generated host plugin directory. */
export declare function writeManagedPluginMarker(pluginRoot: string, pluginName: string): Promise<void>;
/**
 * Read-only adoption check: throws when `pluginRoot` already exists WITHOUT
 * our ownership marker (a user-owned collision), and otherwise does nothing.
 * Separated from `claimManagedPluginDirectory` so an apply can gate ALL of its
 * plugin roots against collisions FIRST — rejecting on a clean tree with zero
 * side effects — and only then claim (write markers into) each root, when no
 * rejection is possible. Writing a marker into a pre-existing unmarked
 * directory would make reset treat the whole (possibly user-owned) directory
 * as Agent Harness-managed and recursively delete it (review / Greptile P1).
 */
export declare function assertPluginDirectoryAdoptable(pluginRoot: string, pluginName: string): Promise<void>;
/**
 * Claims a host plugin directory for this apply, refusing to adopt a
 * directory that already exists WITHOUT our ownership marker. Writing a
 * marker into a pre-existing unmarked directory would make reset treat the
 * whole (possibly user-owned) directory as Agent Harness-managed and
 * recursively delete it (review / Greptile P1). A directory created this
 * apply (absent before) or one already carrying our marker is safe to claim.
 * Returns whether the marker was written (true when the dir is newly claimed).
 */
export declare function claimManagedPluginDirectory(pluginRoot: string, pluginName: string): Promise<void>;
/** Returns true only for a plugin directory explicitly marked by this adapter. */
export declare function hasManagedPluginMarker(pluginRoot: string, pluginName: string): Promise<boolean>;