/**
 * Project-pin routing-URL helpers (design 06 D14 / defect B4). The routing pin is the `/p/<pin>`
 * path segment appended to a hub URL so an agent session launched in a project folder routes strictly
 * to that project's engine instance. The pin is a ROUTING segment only — never part of the OAuth
 * identity resource (decision M8), and never recorded as a credential's `serverTarget`
 * ({@link EngineAdapter.loginServerTarget} strips it).
 */
/**
 * Add (or replace) the `/p/<pin>` routing segment on a URL, preserving scheme/host/port and any
 * non-pin path. An existing trailing `/p/<8-hex>` is replaced (never stacked). Falls back to string
 * surgery for a non-absolute URL. Never returns a trailing slash.
 */
export declare function pinUrl(rawUrl: string, pin: string): string;
/** Remove a trailing `/p/<pin>` routing segment from a URL, leaving the underlying hub URL. */
export declare function stripPinFromUrl(rawUrl: string): string;
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