import type { BehaviorEvent } from '../../application/behavior/behavior-event-emitter.js';
export type SignalType = 'event' | 'metric' | 'state' | 'replay';
export interface SignalMessage {
    readonly type: SignalType;
    readonly channel: string;
    readonly payload: Readonly<Record<string, unknown>>;
    readonly timestamp: string;
    readonly sequenceId: number;
}
export interface MetricSnapshot {
    readonly name: string;
    readonly value: number;
    readonly unit: string;
    readonly window: string;
    readonly timestamp: string;
}
export type EnforcementLevelId = 'guidance' | 'defaults' | 'nudge' | 'enforcement';
export type CompactionLevelId = 'none' | 'trim' | 'summarize' | 'rollup' | 'rollover';
export interface BudgetThresholds {
    readonly evaluateAt: number;
    readonly trimAt: number;
    readonly summarizeAt: number;
    readonly rollupAt: number;
    readonly rolloverAt: number;
}
export interface RuntimeStateSnapshot {
    readonly enforcement: EnforcementLevelId;
    readonly compaction: CompactionLevelId;
    readonly memoryTokens: number;
    readonly budgetPercent: number;
    readonly budgetThresholds: BudgetThresholds;
}
export interface SystemInitPayload {
    readonly version: string;
    readonly sessionId: string;
    readonly totalEvents: number;
    readonly currentBudget: Readonly<Record<string, unknown>> | null;
    readonly currentEnforcement: EnforcementLevelId;
    readonly currentCompactionLevel: CompactionLevelId;
    readonly memoryTokens: number;
    readonly budgetThresholds: BudgetThresholds;
}
export interface HeartbeatPayload {
    readonly uptime: number;
    readonly totalEvents: number;
    readonly state: RuntimeStateSnapshot;
}
export type SignalAggregation = 'none' | 'counter' | 'rate' | 'gauge';
export interface SignalChannelDefinition {
    readonly name: string;
    readonly category: string;
    readonly sourceEventTypes: readonly string[];
    readonly aggregation: SignalAggregation;
}
export type EventListener = (event: BehaviorEvent) => void;
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