fix: importar ícone Brain para MiroFlow card

Erro: ReferenceError: Brain is not defined
Solução: Adicionar Brain aos imports de lucide-react

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

client/src/pages/DevelopmentModule.tsx

@@ -16,7 +16,7 @@ import {
   Plus, Settings, Play, Zap, Layers, Puzzle, Palette,
   Terminal, Box, Workflow, PanelLeft, Table2, FormInput,
   ListChecks, PieChart, LineChart, Gauge, Bot, Code, Trash2, Save,
-  Sparkles, Rocket, PenTool
+  Sparkles, Rocket, PenTool, Brain
 } from "lucide-react";
 import { useLocation } from "wouter";