/** Fixed per-UID short temp base (never ambient $TMPDIR). */
export declare function shortTempRoot(uid?: number): string;
export interface ShortTempAllocation {
    /** The allocated per-agent short TMPDIR (exists, mode 0700). */
    dir: string;
}
/**
 * Allocate the per-agent short temp dir. Throws when the mux-socket length
 * preflight fails or the base cannot be created safely.
 */
export declare function allocateShortTempDir(agentId: string, uid?: number): ShortTempAllocation;
export interface ShortTempRemoval {
    removed: boolean;
    /** Present when the path was refused (never for a merely-missing dir). */
    refusedReason?: string;
}
/**
 * Idempotent, exactly-gated removal. Only a path of the exact shape
 * `/tmp/tp-<uid>/<component>` (component matching the allocator's grammar,
 * no traversal) is ever recursively deleted; ancestors, siblings, and forged
 * paths are refused with a diagnostic. A missing dir counts as removed.
 */
export declare function removeShortTempDir(dir: string): ShortTempRemoval;
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