fix: tree root node not displaying

src/main/kotlin/app/termora/WelcomePanel.kt

@@ -183,6 +183,10 @@ class WelcomePanel(private val windowScope: WindowScope) : JPanel(BorderLayout()
                         || node.host.username.contains(text)
             }
 
+            override fun canFilter(): Boolean {
+                return searchTextField.text.isNotBlank()
+            }
+
         })
 
         searchTextField.addKeyListener(object : KeyAdapter() {

src/main/kotlin/app/termora/tree/Filter.kt

@@ -3,4 +3,6 @@ package app.termora.tree
 interface Filter {
 
     fun filter(node: Any): Boolean
+
+    fun canFilter() = true
 }