feat(validation): v2 frontend — pages, components, stores, i18n
Frontend implementation for v2 LLM dashboard validation:
- validation-tasks/ pages (list, create, edit, detail, runs, history)
- ValidationTaskForm with 5-step wizard, LLM provider selector
- ValidationTaskReport with collapsible dashboard issue cards
- WebSocket task drawer with progress tracking and reconnect logic
- Dashboard page integration with validation status, history, health
- API layer: fetchApi/requestApi wrappers with trace_id propagation
- CoT logger (frontend) for structured JSON logging
- i18n: validation.json with 117 keys each for en/ru
- Settings refactor: consolidated admin settings, provider bindings
- ScheduleAtAGlance health widget, sidebar navigation update
busya
328496fde0