/**
 * ollama_log_tail — structured tail of the NDJSON observability log (no-LLM).
 *
 * Reads the last N lines of ~/.ollama-intern/log.ndjson (override via
 * INTERN_LOG_PATH), parses each line as JSON, applies optional filters, and
 * returns a stable array of structured events. Truncated final lines are
 * skipped silently (the log is append-only and a concurrent writer can
 * leave a partial line at the tail).
 *
 * Missing log file is a soft-empty case: the tool returns 0 events without
 * an error — there's nothing wrong with "no activity yet."
 */
import { z } from "zod";
import type { Envelope } from "../envelope.js";
import type { RunContext } from "../runContext.js";
export declare const logTailSchema: z.ZodObject<{
    limit: z.ZodOptional<z.ZodNumber>;
    filter_kind: z.ZodOptional<z.ZodString>;
    filter_tool: z.ZodOptional<z.ZodString>;
    since: z.ZodOptional<z.ZodString>;
}, z.core.$strip>;
export type LogTailInput = z.infer<typeof logTailSchema>;
export interface LogTailResult {
    events: Array<Record<string, unknown>>;
    total_returned: number;
    log_path: string;
    log_present: boolean;
}
export declare function handleLogTail(input: LogTailInput, ctx: RunContext): Promise<Envelope<LogTailResult>>;
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