Function getRiskTierProfile

Returns {
    assurancePacks: "core" | "security" | "all" | "minimal";
    evaluationTimeoutMs: number;
    evidenceDepth: "standard" | "light" | "full";
    maxQuestions: number;
    reportDetail: "standard" | "summary" | "comprehensive";
    requireSignature: boolean;
    tier: "low" | "med" | "high" | "critical";
}