export declare function resolveFinalAssistantText(params: {
    finalText?: string | null;
    streamedText?: string | null;
}): string;
export declare function composeThinkingAndContent(params: {
    thinkingText?: string;
    contentText?: string;
    showThinking?: boolean;
}): string;
/**
 * Extract ONLY thinking blocks from message content.
 * Model-agnostic: returns empty string if no thinking blocks exist.
 */
export declare function extractThinkingFromMessage(message: unknown): string;
/**
 * Extract ONLY text content blocks from message (excludes thinking).
 * Model-agnostic: works for any model with text content blocks.
 */
export declare function extractContentFromMessage(message: unknown): string;
/**
 * Channel inbound DMs collapse into koi:main:main and are stored as user turns
 * carrying the channel envelope ("[WhatsApp +1832… +32s 2026-06-10 22:41 CDT]")
 * and/or the inbound prefix ("[SKYKOI] …"). The owner already gets a clean
 * "📨 WhatsApp · Name: text" heads-up for those, so the raw envelope turn should
 * NOT also clutter their chat. Their OWN typed messages never lead with such a
 * header, so detecting it cleanly tells them apart (display-only — the koi still
 * receives the full message).
 */
/**
 * Strip the runtime's silent-control tokens (NO_REPLY, HEARTBEAT_OK) from text
 * shown to the owner. These are control signals — NO_REPLY tells the runtime to
 * send NOTHING back to a contact, HEARTBEAT_OK acks an internal poll — and must
 * NEVER render in the owner's chat. The koi may emit such a token alongside a
 * natural heads-up meant for the owner; we drop only the token(s) and keep the
 * human text. A turn that is ONLY a token collapses to empty, so the caller (which
 * guards on `if (text)`) renders nothing for it.
 */
export declare function stripSilentControlTokens(text: string): string;
export declare function isChannelInboundEcho(text: string): boolean;
export declare function extractTextFromMessage(message: unknown, opts?: {
    includeThinking?: boolean;
}): string;
export declare function isCommandMessage(message: unknown): boolean;
export declare function formatTokens(total?: number | null, context?: number | null): string;
export declare function formatContextUsageLine(params: {
    total?: number | null;
    context?: number | null;
    remaining?: number | null;
    percent?: number | null;
}): string;
export declare function asString(value: unknown, fallback?: string): string;