/**
 * Build the shell command string for the opencode-cli provider.
 * Accepts a pre-combined file written by the dispatcher and passes it as a
 * single `@file` reference so opencode reads it directly.
 */
export declare function buildOpenCodeCliCommand(combinedFile: string, sessionId?: string, model?: string, sessionName?: string): string;
/**
 * List all OpenCode sessions for this workspace directory (newest first, capped at 20).
 * Uses `opencode session list --format json`. Returns empty array on timeout/error.
 */
export declare function listOpenCodeSessions(cwd: string): Promise<Array<{
    id: string;
    mtime: number;
}>>;
/**
 * Get the latest OpenCode session ID for this workspace directory by querying
 * `opencode session list`. No tokens consumed — purely a metadata read.
 *
 * @param notBefore  Epoch-ms timestamp — ignore sessions created before this
 *                   time (used after "New Session" to skip the old session).
 */
export declare function getLatestOpenCodeSessionId(cwd: string, log: (msg: string) => void, notBefore?: number): Promise<string | undefined>;
/**
 * Run `/compact` on an existing OpenCode session to summarise conversation
 * history and free up context window space.  Returns a promise that resolves
 * when the compact command exits (success or failure — caller decides whether
 * to treat an error as fatal).
 */
export declare function runOpenCodeCompact(sessionId: string, cwd: string, log: (msg: string) => void): Promise<void>;