/**
 * A resumed cline turn over ACP (`cline --acp --auto-approve true`; scoped
 * `--auto-approve false`, refusing what needs approval — see
 * cline-runner-scoped.ts).
 *
 * Why ACP: `cline --id <session>` cannot be combined with `--json` (it forces
 * the interactive UI and drops the prompt), so the one headless way to add a
 * turn to an existing session is ACP `session/load` + `session/prompt`.
 * Verified live against cline 3.0.65 with an OpenRouter free model
 * (2026-09-29): the loaded session kept its earlier context.
 *
 * Wire (JSON-RPC 2.0, one object per line): initialize → session/load
 * {sessionId, cwd, mcpServers: []} → session/prompt. `session/load` REPLAYS
 * the stored conversation as `session/update` notifications before it
 * answers, so every update before the load response is ignored.
 *
 * Auth: ACP only restores stored credentials of cline's own sign-ins (cline,
 * cline-pass, openai-codex). Any other provider needs `CLINE_API_KEY` — which
 * ACP passes to the provider as its key — so the runner fills it from the
 * provider's own key variable (OPENROUTER_API_KEY, ...) when unset, and
 * names the fix when there is none. `CLINE_PROVIDER` / `CLINE_MODEL` pick the
 * provider and model (the session's own, from `cline history`, by default).
 *
 * Gaps ACP has (cline's acp/session-updates.ts drops them): no usage and no
 * iteration events, and `--thinking` does not exist there (ACP runs with
 * thinking off). Usage and cost come from the session's cumulative
 * `metadata.usage` in `cline history --json`, read before and after the turn.
 * Max turns is approximated: a model step starts at the first message,
 * thought or tool call after tool results; past the cap the runner sends
 * `session/cancel` (stopReason `cancelled`), and kills the process if the
 * prompt has not ended EXIT_GRACE_MS later.
 */
import type { AgentRunArgs } from './agent-runner.js';
import type { ClineSetup } from './cline-runner-host.js';
import type { ClineEvent, ClineHistoryRow, ClineHost, ClineTurnOutcome, ClineUsage } from './cline-runner-types.js';
/** The key variable cline's provider catalog names for a provider
 *  (`apiKeyEnv`); the common ones, else `<PROVIDER>_API_KEY`. */
export declare function providerKeyEnv(provider: string): string[];
/** The ACP env for one resumed turn, or the reason it cannot authenticate. */
export declare function acpEnv(base: Record<string, string>, provider: string | undefined, model: string | undefined): {
    env: Record<string, string>;
} | {
    error: string;
};
/** Session-cumulative usage of a history row. */
export declare function rowUsage(row: ClineHistoryRow | undefined): ClineUsage | undefined;
export declare function streamAcpTurn(setup: ClineSetup, sessionId: string, prompt: string, args: AgentRunArgs, host: ClineHost, outcome: ClineTurnOutcome, known: {
    provider?: string;
    model?: string;
}): AsyncGenerator<ClineEvent>;
//# sourceMappingURL=cline-runner-acp.d.ts.map