Fix: Missing Database icon import in ProjectDetail.tsx (Phase 8 UI Polish)

frontend/src/components/ProjectDetail.tsx

@@ -1,5 +1,5 @@
 import React, { useCallback, useEffect, useMemo, useState } from 'react';
-import { ArrowLeft, Bot, CheckCircle2, Download, FilePenLine, FileText, ListTodo, Map as MapIcon, PlayCircle, PlusCircle, RefreshCw, Trash2, X } from 'lucide-react';
+import { ArrowLeft, Bot, CheckCircle2, Database, Download, FilePenLine, FileText, ListTodo, Map as MapIcon, PlayCircle, PlusCircle, RefreshCw, Trash2, X } from 'lucide-react';
 import { motion } from 'framer-motion';
 import { supabase } from '../services/supabase';
 import { useAuth } from '../context/useAuth';