fix(finance): corrige erro critico

- sobrescrita de valores na edição e refresh da lista após salvar
 - mapeia fot_id corretamente e bloqueia sobrescrita de preço na inicialização da edição

frontend/pages/Finance.tsx

@@ -110,6 +110,8 @@ const Finance: React.FC = () => {
     dataPgto: "",
     pgtoOk: false,
   });
+  
+  const isEditInitializing = useRef(false);
 
   // Auto-fill state
   const [fotLoading, setFotLoading] = useState(false);
@@ -180,6 +182,7 @@ const Finance: React.FC = () => {
       const mapped = (Array.isArray(data) ? data : []).map((item: any) => ({
         id: item.id,
         fot: item.fot_numero || 0,
+        fot_id: item.fot_id, // Ensure fot_id is mapped!
         data: item.data_cobranca ? new Date(item.data_cobranca).toLocaleDateString("pt-BR", {timeZone: "UTC"}) : "",
         dataRaw: item.data_cobranca ? item.data_cobranca.split("T")[0] : "", 
         curso: item.curso_nome || "", 
@@ -430,11 +433,19 @@ const Finance: React.FC = () => {
     const fetchPrice = async () => {
         if (!formData.tipoEvento || !formData.tipoServico) return;
         
-        // If editing existing transaction, maybe don't overwrite unless user changes something?
-        // But for "Nova Transação", strictly overwrite. 
-        // Let's assume overwrite if price is 0 or user changed inputs.
-        // Simplified: always fetch if inputs present.
+        // Skip auto-pricing if we are initializing the edit form
+        if (isEditInitializing.current) {
+            isEditInitializing.current = false;
+            return;
+        }
         
+        // Don't overwrite if we are editing and the types haven't changed from the original
+        if (selectedTransaction && 
+            formData.tipoEvento === selectedTransaction.tipoEvento && 
+            formData.tipoServico === selectedTransaction.tipoServico) {
+            return;
+        }
+
         const token = localStorage.getItem("token");
         if (!token) return;
 
@@ -456,7 +467,7 @@ const Finance: React.FC = () => {
         }
     };
     fetchPrice();
-  }, [formData.tipoEvento, formData.tipoServico]);
+  }, [formData.tipoEvento, formData.tipoServico, selectedTransaction]);
 
   const handleProSearch = async (query: string) => {
       setProQuery(query);
@@ -521,6 +532,7 @@ const Finance: React.FC = () => {
   };
 
   const handleEdit = async (t: FinancialTransaction) => {
+    isEditInitializing.current = true;
     setSelectedTransaction(t);
     setFormData({
         id: t.id,
@@ -713,16 +725,19 @@ const Finance: React.FC = () => {
            setTimeout(() => setSuccessMessage(""), 3000);
            
            // Reload list background
-           loadTransactions();
+           await loadTransactions();
 
        } catch (err) {
            alert("Erro ao salvar: " + err);
        }
   };
   
+  // Calculations
   // Calculations
    useEffect(() => {
-    setFormData((prev) => ({ ...prev, totalPagar: total }));
+    const vFree = Number(formData.valorFree) || 0;
+    const vExtra = Number(formData.valorExtra) || 0;
+    setFormData((prev) => ({ ...prev, totalPagar: vFree + vExtra }));
   }, [formData.valorFree, formData.valorExtra]);
 
   const handleExportCSV = () => {