sidebar: More vim actions (#53419)

Release Notes:

- N/A or Added/Fixed/Improved ...

assets/keymaps/vim.json

@@ -1148,6 +1148,11 @@
       "g g": "menu::SelectFirst",
       "shift-g": "menu::SelectLast",
       "/": "agents_sidebar::FocusSidebarFilter",
+      "d d": "agent::RemoveSelectedThread",
+      "o": "agents_sidebar::NewThreadInGroup",
+      "shift-o": "agents_sidebar::NewThreadInGroup",
+      "] p": "multi_workspace::NextProject",
+      "[ p": "multi_workspace::PreviousProject",
       "z a": "editor::ToggleFold",
       "z c": "menu::SelectParent",
       "z o": "menu::SelectChild",