feat: Sprint 4 — SFTP dual-pane with per-type icons, breadcrumb, drop-zone, create/delete, toast

app/backend/internal/model/transfer.go

@@ -0,0 +1,22 @@
+package model
+
+type Transfer struct {
+	ID          string `json:"id"`
+	FileName    string `json:"fileName"`
+	Source      string `json:"source"`
+	Destination string `json:"destination"`
+	Progress    int    `json:"progress"`
+	Speed       string `json:"speed"`
+	Type        string `json:"type"`   // upload | download
+	Status      string `json:"status"` // queued | transferring | completed | error
+}
+
+type TransferStore struct {
+	Transfers []Transfer
+}
+
+func NewTransferStore() *TransferStore {
+	return &TransferStore{}
+}
+
+func (s *TransferStore) All() []Transfer { return s.Transfers }