refactor(repo): переход на pnpm monorepo с shadcn/ui и Fastify+Drizzle

Frontend:
- apps/web (Vite+TS, TanStack Router/Query, shadcn/ui @cfdm/ui base-nova)
- 10 страниц в routes/_auth/, Recharts через shadcn Chart, lucide-react
- формы на RHF + Zod (FormSheet/FormField)
- удалены Tabler, Chart.js, react-router-dom

Backend (параллельный трек):
- apps/api (Fastify 5 + Drizzle + better-sqlite3)
- packages/db: Drizzle-схема и repositories по сущностям
- packages/shared: Zod-контракты
- роуты с валидацией и единым форматом ошибок { error: { code, message } }
- sync/backup — заглушки 501 (billmanager-адаптеры переносятся отдельно)
- legacy Express оставлен как runtime по умолчанию (RUNTIME=express)

Infra:
- Dockerfile multi-stage под pnpm workspaces
- .dockerignore и docker-compose обновлены под monorepo

Rules:
- удалены нерелевантные правила (rust, cloudflare, server/frontend-conventions)
- project-structure.mdc и AGENTS.md переписаны под monorepo
- frontend-shadcn.mdc, shadcn-ui-production.mdc, sqlite.mdc обновлены

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/web/src/queries/snapshot.ts

@@ -0,0 +1,47 @@
+import { queryClient } from '../lib/queryClient'
+import { api } from '../lib/api-client'
+
+export const snapshotKeys = {
+  all: ['snapshot'] as const,
+}
+
+export const snapshotQueryOptions = () => ({
+  queryKey: snapshotKeys.all,
+  queryFn: () => api.fetchData(),
+  staleTime: 30_000,
+})
+
+export const ratesKeys = {
+  all: ['rates'] as const,
+}
+
+export const ratesQueryOptions = (ratesUrl?: string) => ({
+  queryKey: ratesKeys.all,
+  queryFn: async () => {
+    if (!ratesUrl) return null
+    const proxyUrl = `/api/rates-proxy?url=${encodeURIComponent(ratesUrl)}`
+    try {
+      const res = await fetch(proxyUrl)
+      if (!res.ok) throw new Error(`HTTP ${res.status}`)
+      return await res.json()
+    } catch {
+      const direct = await fetch(ratesUrl)
+      if (!direct.ok) throw new Error(`HTTP ${direct.status}`)
+      return await direct.json()
+    }
+  },
+  enabled: Boolean(ratesUrl),
+})
+
+export const projectsKeys = {
+  suggest: (q: string) => ['projects', 'suggest', q] as const,
+}
+
+export const projectsSuggestQueryOptions = (q: string) => ({
+  queryKey: projectsKeys.suggest(q),
+  queryFn: () => api.fetchProjectSuggestions(q),
+  enabled: q.length >= 2,
+})
+
+export type SnapshotFromQuery = Awaited<ReturnType<typeof api.fetchData>>
+export { queryClient }