feat: Implement Phase 1 & 2 - Full monorepo architecture

## Backend API (apps/api)
- Express.js server with TypeScript
- JWT authentication with access/refresh tokens
- Multi-tenant middleware (schema per tenant)
- Complete CRUD routes: auth, cfdis, transactions, contacts, categories, metrics, alerts
- SAT integration: CFDI 4.0 XML parser, FIEL authentication
- Metrics engine: 50+ financial metrics (Core, Startup, Enterprise)
- Rate limiting, CORS, Helmet security

## Frontend Web (apps/web)
- Next.js 14 with App Router
- Authentication pages: login, register, forgot-password
- Dashboard layout with Sidebar and Header
- Dashboard pages: overview, cash-flow, revenue, expenses, metrics
- Zustand stores for auth and UI state
- Theme support with flash prevention

## Database Package (packages/database)
- PostgreSQL migrations with multi-tenant architecture
- Public schema: plans, tenants, users, sessions, subscriptions
- Tenant schema: sat_credentials, cfdis, transactions, contacts, accounts, alerts
- Tenant management functions
- Seed data for plans and super admin

## Shared Package (packages/shared)
- TypeScript types: auth, tenant, financial, metrics, reports
- Zod validation schemas for all entities
- Utility functions for formatting

## UI Package (packages/ui)
- Chart components: LineChart, BarChart, AreaChart, PieChart
- Data components: DataTable, MetricCard, KPICard, AlertBadge
- PeriodSelector and Skeleton components

## Infrastructure
- Docker Compose: PostgreSQL 15, Redis 7, MinIO, Mailhog
- Makefile with 25+ development commands
- Development scripts: dev-setup.sh, dev-down.sh
- Complete .env.example template

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/shared/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "@horux/shared",
+  "version": "0.1.0",
+  "private": true,
+  "description": "Shared types and utilities for Horux Strategy",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "scripts": {
+    "build": "tsc",
+    "dev": "tsc --watch",
+    "lint": "eslint src --ext .ts",
+    "typecheck": "tsc --noEmit",
+    "clean": "rm -rf dist node_modules"
+  },
+  "dependencies": {
+    "zod": "^3.22.4"
+  },
+  "devDependencies": {
+    "@types/node": "^20.11.0",
+    "eslint": "^8.56.0",
+    "typescript": "^5.3.3"
+  }
+}