Audit-harness probe registry + Finding schema v1

## Что это ## Контекст audit-harness-design R1+R3: probe registry с ranker + ticket-gen. Finding schema v1 с vdiImpact, confidence, evidence. ## Модель данных ```ts type Finding = { id: string; probe: string; surface: string; phase: 'static'|'runtime'|'visual'|'flow'; severity: 'low'|'medium'|'high'|'critical'; rule: string; location?: { file: string; line: number }; message: string; evidence: string; suggestedFix?: string; confidence: number; // 0..1 vdiImpact: number; // visual-design-impact, 0..1 firstSeen: string; lastSeen: string; }; ``` ## Критерии приёмки - [ ] ProbeContext + ProbeResult interfaces - [ ] Registry register/list/runAll - [ ] Error-isolation per-probe (R10) - [ ] Top-K=50 cap (R9) ## Статус Это задача из текущего backlog'а ROX.ONE (Linear). Текущий статус в Linear: `Triage`. Метки: `История` / `Story`, `Аудит` / `Audit`. ## 🔗 Linear - [PZD-176](https://linear.app/kuhjie/issue/PZD-176/istoriya-audit-harness-probe-registry-finding-schema-v1) — backing ticket - Parent epic: [PZD-118](https://linear.app/kuhjie/issue/PZD-118)