export type RuntimeEvent = {
    type: 'message_delta';
    sessionId: string;
    text: string;
} | {
    type: 'reasoning_delta';
    sessionId: string;
    text: string;
} | {
    type: 'tool_started';
    sessionId: string;
    toolCallId: string;
    title: string;
    kind?: string;
    input?: unknown;
    status?: string;
} | {
    type: 'tool_updated' | 'tool_completed';
    sessionId: string;
    toolCallId: string;
    status?: string;
    output?: unknown;
} | {
    type: 'usage';
    sessionId: string;
    inputTokens: number;
    outputTokens: number;
    totalTokens: number;
    cachedReadTokens?: number;
    thoughtTokens?: number;
} | {
    type: 'diagnostic';
    method: string;
    sessionId?: string;
    data?: unknown;
} | {
    type: 'child_started';
    sessionId: string;
    childRunId: string;
    title: string;
    kind?: string;
    input?: unknown;
} | {
    type: 'child_finished';
    sessionId: string;
    childRunId: string;
    status: 'completed' | 'failed' | 'cancelled';
    output?: unknown;
};