zed: add vim keymaps

modules/applications/zed/home.nix

@@ -6,6 +6,8 @@
       "nix"
     ];
     mutableUserSettings = false;
+    mutableUserKeymaps = false;
+    userKeymaps = import ./keymaps.nix;
 
     userSettings = {
       agent = {

modules/applications/zed/keymaps.nix

@@ -0,0 +1,38 @@
+[
+  {
+    context = "Editor && vim_mode == normal";
+    bindings = {
+      # This selected native-equivalent subset preserves Zed's Vim defaults for
+      # K, gd, grr, gri, gra, gO, ]d, [d, zM, zR, [b, and ]b.
+      "g r t" = "editor::GoToTypeDefinition";
+      "space space" = "pane::AlternateFile";
+      "space r n" = "editor::Rename";
+      "space c a" = "editor::ToggleCodeActions";
+      "space c f" = "editor::Format";
+      "space d l" = "editor::Hover";
+      "space e" = "project_panel::Toggle";
+      "space t t" = "terminal_panel::Toggle";
+      "space b c" = "pane::CloseActiveItem";
+      "space f f" = "file_finder::Toggle";
+      "space f g" = "pane::DeploySearch";
+      "space f b" = "tab_switcher::ToggleAll";
+      "space f s" = "outline::Toggle";
+      "space f shift-s" = "project_symbols::Toggle";
+      "space x x" = "diagnostics::Deploy";
+    };
+  }
+  {
+    # Keep normal-mode editor navigation out of terminals and other panels.
+    context = "Editor && vim_mode == normal && !menu";
+    bindings = {
+      "ctrl-h" = "workspace::ActivatePaneLeft";
+      "ctrl-j" = "workspace::ActivatePaneDown";
+      "ctrl-k" = "workspace::ActivatePaneUp";
+      "ctrl-l" = "workspace::ActivatePaneRight";
+      "ctrl-left" = "workspace::ActivatePaneLeft";
+      "ctrl-down" = "workspace::ActivatePaneDown";
+      "ctrl-up" = "workspace::ActivatePaneUp";
+      "ctrl-right" = "workspace::ActivatePaneRight";
+    };
+  }
+]