Function predictBudgetPressure

Returns {
    budgetConfigured: boolean;
    daily: {
        llmCostUsd: { limit: number; ratio: number; used: number };
        llmRequests: { limit: number; ratio: number; used: number };
        llmTokens: { limit: number; ratio: number; used: number };
    };
    exceeded: boolean;
    perMinute: {
        llmRequests: { limit: number; ratio: number; used: number };
        llmTokens: { limit: number; ratio: number; used: number };
    };
    reasons: string[];
    signatureValid: boolean;
}