/**
 * OpenTelemetry Logs bridge for Photon.
 *
 * Zero-dep no-op that upgrades gracefully when
 * `@opentelemetry/api-logs` is installed. Mirrors the dynamic-import
 * pattern used in otel.ts and metrics.ts so the runtime stays
 * dependency-free by default and production deployments can wire up
 * any OTLP-compatible log backend by installing the SDK.
 *
 * The photon Logger pushes each emitted record through `emitOtelLog`
 * after writing to its local stream. When the SDK is present the
 * record is forwarded to the OTel logs bridge with severity mapped
 * to the standard scale and ambient trace context auto-attached.
 */
export interface OtelLogRecord {
    level: 'debug' | 'info' | 'warn' | 'error';
    message: string;
    attributes?: Record<string, unknown>;
}
/**
 * Emit a log record to OpenTelemetry if the SDK is installed. No-op otherwise.
 * The ambient request context (photon/tool/traceId/callerId) is pulled lazily
 * so callers do not have to thread it through.
 */
export declare function emitOtelLog(record: OtelLogRecord): void;
/**
 * Returns true if the OTel logs SDK is available.
 */
export declare function isOtelLogsEnabled(): boolean;
/**
 * Wait for the initial probe. For tests.
 */
export declare function waitForLogsProbe(): Promise<void>;
/**
 * Reset cached state. For tests only.
 */
export declare function _resetLogsCache(): void;
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