feat: add Node.js/Express API with real data from Desk CRM

- ✅ API completa em /api com TypeScript
- ✅ Google Calendar integration (pessoal + profissional)
- ✅ Queries diretas à BD: tasks, leads, projectos, billing, pipeline
- ✅ Endpoints: /api/dashboard, /api/monitor, /api/health
- ✅ Vite proxy configurado (/api → localhost:3001)
- ✅ App.tsx usa /api/dashboard (não mais dados mock)
- ✅ Migração completa do PHP (index.php + monitor.php)
- ✅ CHANGELOG.md criado para tracking
- ✅ Scripts npm: dev (paralelo), dev:api, dev:ui, start

Dependencies:
- express, cors, mysql2, googleapis
- concurrently, tsx (dev)

Breaking: PHP backend será descontinuado
See: CHANGELOG.md, api/README.md

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

api/services/monitoring.ts

@@ -0,0 +1,85 @@
+/**
+ * Monitoring Queries Service
+ * @author Descomplicar® | @link descomplicar.pt | @copyright 2026
+ */
+import db from '../db.js'
+import type { RowDataPacket } from 'mysql2'
+
+interface MonitoringItem {
+  id: number
+  name: string
+  category: string
+  type: string
+  status: string
+  details: any
+  last_check: string
+  created_at: string
+  updated_at: string
+}
+
+interface CategorySummary {
+  category: string
+  total: number
+  ok: number
+  warning: number
+  critical: number
+}
+
+export async function getMonitoringData() {
+  // Get all items
+  const [items] = await db.query<RowDataPacket[]>(`
+    SELECT * FROM tbl_eal_monitoring
+    ORDER BY category, name
+  `)
+
+  // Get summary by category
+  const [summary] = await db.query<RowDataPacket[]>(`
+    SELECT
+      category,
+      COUNT(*) as total,
+      SUM(CASE WHEN status IN ('ok','up') THEN 1 ELSE 0 END) as ok,
+      SUM(CASE WHEN status = 'warning' THEN 1 ELSE 0 END) as warning,
+      SUM(CASE WHEN status IN ('failed','down') THEN 1 ELSE 0 END) as critical
+    FROM tbl_eal_monitoring
+    GROUP BY category
+  `)
+
+  // Parse details JSON
+  const itemsParsed = items.map(item => ({
+    ...item,
+    details: typeof item.details === 'string' ? JSON.parse(item.details) : item.details
+  }))
+
+  // Organize by category
+  const data: Record<string, MonitoringItem[]> = {}
+  for (const item of itemsParsed) {
+    if (!data[item.category]) {
+      data[item.category] = []
+    }
+    data[item.category].push(item)
+  }
+
+  // Calculate overall status
+  let overall: 'ok' | 'warning' | 'critical' = 'ok'
+  let total_critical = 0
+  let total_warning = 0
+
+  for (const s of summary as CategorySummary[]) {
+    total_critical += s.critical
+    total_warning += s.warning
+  }
+
+  if (total_critical > 0) overall = 'critical'
+  else if (total_warning > 0) overall = 'warning'
+
+  return {
+    items: data,
+    summary,
+    overall,
+    stats: {
+      total_critical,
+      total_warning,
+      total_ok: items.length - total_critical - total_warning
+    }
+  }
+}