better project and session selection and filtering

app.py

@@ -378,6 +378,7 @@ class SessionMoverApp(App):
         table = self.query_one("#sessions-table")
         table.zebra_stripes = True
         table.cursor_type = "row"
+        table.show_cursor = False
         table.add_columns(" ", "ID", "Title", "Project", "Workspace", "Msgs", "Created")
         
         # Don't load sessions until a project is selected
@@ -475,6 +476,14 @@ class SessionMoverApp(App):
         else:
             count_widget.update("0 selected")
 
+    def on_descendant_focus(self, event) -> None:
+        table = self.query_one("#sessions-table", DataTable)
+        table.show_cursor = table.has_focus
+
+    def on_descendant_blur(self, event) -> None:
+        table = self.query_one("#sessions-table", DataTable)
+        table.show_cursor = table.has_focus
+
     def on_list_view_highlighted(self, event: ListView.Highlighted) -> None:
         """Handle project list selection."""
         if event.list_view.id != "project-list":