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 <[email protected]>

apps/api/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "@cfdm/api",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "dev:legacy": "node index.js",
+    "build": "tsc -p tsconfig.json",
+    "start": "node dist/index.js",
+    "start:legacy": "node index.js",
+    "test": "vitest run"
+  },
+  "dependencies": {
+    "@cfdm/db": "workspace:*",
+    "@cfdm/shared": "workspace:*",
+    "@fastify/cors": "^11.0.1",
+    "@fastify/sensible": "^6.0.3",
+    "@fastify/static": "^8.2.0",
+    "fastify": "^5.6.1",
+    "better-sqlite3": "^11.10.0",
+    "drizzle-orm": "^0.40.0",
+    "express": "^4.21.1",
+    "cors": "^2.8.5",
+    "sql.js": "^1.14.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.10.0",
+    "@types/express": "^5.0.0",
+    "@types/cors": "^2.8.17",
+    "tsx": "^4.19.0",
+    "typescript": "^5.9.2",
+    "vitest": "^3.0.0"
+  }
+}