import type { ModelRuntime } from "@earendil-works/pi-coding-agent";
import type { SessionTitleConfig } from "./config.js";
type SessionEntryLike = {
    type?: string;
    message?: {
        role?: string;
        content?: unknown;
    };
};
type TitleModelRuntime = Pick<ModelRuntime, "getModel" | "completeSimple">;
export declare const TITLE_SYSTEM_PROMPT: string;
export declare function parseTitleModelRef(modelRef: string): {
    provider: string;
    modelId: string;
} | undefined;
export declare function firstUserMessageText(entries: readonly SessionEntryLike[]): string | undefined;
export declare function fallbackSessionTitleFromInput(input: string, maxTitleChars: number): string | undefined;
export declare function buildTitlePrompt(input: string, maxTitleChars: number): string;
export declare function titleResponseText(response: {
    content: Array<{
        type: string;
        text?: string;
    }>;
}): string;
export declare function sanitizeSessionTitle(raw: string, maxTitleChars: number): string | undefined;
export declare function sessionTitleModelRefs(config: SessionTitleConfig): string[];
/** Host-side title generation through the canonical SDK ModelRuntime. */
export declare function generateSessionTitleWithRuntime(input: string, modelRuntime: TitleModelRuntime, config: SessionTitleConfig, modelRef: string, signal: AbortSignal, onWarning?: (message: string) => void): Promise<string | undefined>;
export {};