Add live Markdown editing, colours and files in the tree

Client/Main.py

@@ -67,7 +67,9 @@ def Main(Page: ft.Page) -> None:
             TheApp.Connect()  # its listeners reload the tree and the browser
         else:
             Body.update()
+            Tree.Reload()  # "Show files in the tree" may have changed
             TheBrowser.Refresh()
+            Tree.RevealPath(TheBrowser.Root, TheBrowser.Path)
 
     def ToggleSidebar() -> None:
         Config.ShowSidebar = not Config.ShowSidebar
@@ -85,7 +87,7 @@ def Main(Page: ft.Page) -> None:
 
     TheBrowser = Browser(TheApp, OnPathChanged, lambda: ShowSettings("Connection" if TheApp.ConnectError else "General"),
                          ToggleSidebar)
-    Tree = Filetree(TheApp, TheBrowser.NavigateTo)
+    Tree = Filetree(TheApp, TheBrowser.NavigateTo, TheBrowser.OpenFile)
     Divider = ResizeHandle(OnDrag, OnDragEnd)
     Tree.visible = Divider.visible = Config.ShowSidebar
     # STRETCH so the divider gets the full height to be dragged along.