/**
 * Strips OpenClaw-injected inbound metadata blocks from a user-role message
 * text before it is displayed in any UI surface (TUI, webchat, macOS app).
 *
 * Background: `buildInboundUserContextPrefix` in `inbound-meta.ts` prepends
 * structured metadata blocks (Conversation info, Sender info, reply context,
 * etc.) directly to the stored user message content so the LLM can access
 * them. These blocks are AI-facing only and must never surface in user-visible
 * chat history.
 *
 * Also strips the timestamp prefix injected by `injectTimestamp` so UI surfaces
 * do not show AI-facing envelope metadata as user text.
 */
/**
 * Remove all injected inbound metadata prefix blocks from `text`.
 *
 * Each block has the shape:
 *
 * ```
 * <sentinel-line>
 * ```json
 * { … }
 * ```
 * ```
 *
 * Returns the original string reference unchanged when no metadata is present
 * (fast path — zero allocation).
 */
export declare function stripInboundMetadata(text: string): string;
export declare function stripLeadingInboundMetadata(text: string): string;
export declare function extractInboundSenderLabel(text: string): string | null;