feat(pre-matricula): add metadata preview image upload and deletion UI

manager/components/PreMatricula.tsx

@@ -4,7 +4,7 @@ import {
   Plus, Trash2, Save, Eye, EyeOff, Download, GripVertical, Link2,
   ClipboardPen, Copy, Check, ChevronDown, ChevronRight, Users, RefreshCw,
   FileText, X, Settings2, ArrowLeft, ExternalLink, AlertCircle, UserCheck, Edit, Upload,
-  MessageSquare, Paperclip, Smile
+  MessageSquare, Paperclip, Smile, Image
 } from 'lucide-react';
 import { useDialog } from '../DialogContext';
 
@@ -502,6 +502,63 @@ const PreMatricula: React.FC<Props> = ({ data, onConvert }) => {
                 <textarea className="w-full px-4 py-3 bg-slate-50 border border-slate-200 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:outline-none text-sm font-medium resize-none" rows={2}
                   value={config?.mensagemSucesso || ''} onChange={e => setConfig(prev => prev ? { ...prev, mensagemSucesso: e.target.value } : prev)} />
               </div>
+              <div>
+                <label className="block text-[10px] font-bold text-slate-500 uppercase mb-1">Imagem de Pré-Visualização (WhatsApp/Social)</label>
+                <div className="space-y-3">
+                  {config?.logoUrl ? (
+                    <div className="relative group border border-slate-200 rounded-xl overflow-hidden bg-slate-50 p-2 flex items-center justify-between shadow-sm">
+                      <div className="flex items-center gap-3">
+                        <img src={config.logoUrl} alt="Preview" className="w-12 h-12 object-contain rounded-lg border border-slate-200 bg-white" />
+                        <span className="text-[10px] text-slate-400 font-mono truncate max-w-[140px]" title={config.logoUrl}>
+                          {config.logoUrl.split('/').pop()}
+                        </span>
+                      </div>
+                      <button
+                        type="button"
+                        onClick={() => setConfig(prev => prev ? { ...prev, logoUrl: '' } : prev)}
+                        className="p-2 bg-red-50 hover:bg-red-100 text-red-600 rounded-lg transition-colors"
+                        title="Remover Imagem"
+                      >
+                        <Trash2 size={16} />
+                      </button>
+                    </div>
+                  ) : (
+                    <div className="flex items-center justify-center border-2 border-dashed border-slate-200 hover:border-indigo-400 rounded-xl p-5 bg-slate-50 hover:bg-indigo-50/20 transition-all cursor-pointer relative">
+                      <input
+                        type="file"
+                        accept="image/*"
+                        className="absolute inset-0 opacity-0 cursor-pointer"
+                        onChange={async (e) => {
+                          const file = e.target.files?.[0];
+                          if (!file) return;
+                          const formData = new FormData();
+                          formData.append('file', file);
+                          try {
+                            const res = await fetch('/api/prematricula/upload', {
+                              method: 'POST',
+                              body: formData
+                            });
+                            if (res.ok) {
+                              const resData = await res.json();
+                              setConfig(prev => prev ? { ...prev, logoUrl: resData.url } : prev);
+                              showAlert('Sucesso', 'Imagem de visualização carregada!', 'success');
+                            } else {
+                              showAlert('Erro', 'Falha ao carregar imagem.', 'error');
+                            }
+                          } catch (err) {
+                            showAlert('Erro', 'Erro de conexão ao enviar imagem.', 'error');
+                          }
+                        }}
+                      />
+                      <div className="text-center space-y-1">
+                        <Image size={24} className="mx-auto text-slate-400 animate-pulse" />
+                        <p className="text-xs font-bold text-slate-600">Fazer Upload da Imagem</p>
+                        <p className="text-[9px] text-slate-400">JPG, PNG ou WebP até 5MB</p>
+                      </div>
+                    </div>
+                  )}
+                </div>
+              </div>
               <button onClick={saveConfig} disabled={isSaving}
                 className="w-full py-3 bg-indigo-600 text-white rounded-xl font-bold text-sm hover:bg-indigo-700 transition-all active:scale-95 flex items-center justify-center gap-2 disabled:opacity-50"
               >