add cursor module

modules/cursor.nix

@@ -0,0 +1,59 @@
+{ config, pkgs, lib, ... }:
+
+let
+  configDir = if pkgs.stdenv.isDarwin
+    then "Library/Application Support/Cursor/User"
+    else ".config/Cursor/User";
+
+  cursorCmd = if pkgs.stdenv.isDarwin
+    then "/opt/homebrew/bin/cursor"
+    else "cursor";
+
+  ideSettings = {
+    "editor.fontFamily" = "'JetBrainsMono Nerd Font Mono', 'Noto Sans CJK SC', 'Noto Sans CJK TC', monospace";
+    "editor.fontSize" = 14;
+    "editor.tabSize" = 2;
+    "editor.insertSpaces" = true;
+    "editor.wordWrap" = "off";
+    "editor.lineNumbers" = "on";
+    "editor.autoIndent" = "advanced";
+
+    "workbench.colorTheme" = "Gruvbox Dark Hard";
+
+    "vim.leader" = "<space>";
+    "vim.useSystemClipboard" = true;
+    "vim.normalModeKeyBindingsNonRecursive" = [
+      { before = ["<leader>" "w"]; commands = ["workbench.action.files.save"]; }
+      { before = ["<leader>" "q"]; commands = ["workbench.action.closeActiveEditor"]; }
+      { before = ["<leader>" "e"]; commands = ["workbench.action.toggleSidebarVisibility"]; }
+      { before = ["<S-h>"]; commands = ["workbench.action.previousEditor"]; }
+      { before = ["<S-l>"]; commands = ["workbench.action.nextEditor"]; }
+      { before = ["<leader>" "x"]; commands = ["workbench.action.closeActiveEditor"]; }
+      { before = ["<leader>" "X"]; commands = ["workbench.action.closeOtherEditors"]; }
+      { before = ["<leader>" "t"]; commands = ["workbench.action.quickOpen"]; }
+      { before = ["<leader>" "g"]; commands = ["workbench.action.findInFiles"]; }
+    ];
+  };
+
+  cliConfig = {};
+
+in
+{
+  config = {
+    home.file."${configDir}/settings.json" = {
+      text = builtins.toJSON ideSettings;
+    };
+
+    home.file.".cursor/cli-config.json" = {
+      text = builtins.toJSON cliConfig;
+    };
+
+    home.activation.installCursorExtensions = config.lib.dag.entryAfter ["writeBoundary"] ''
+      if command -v ${cursorCmd} &> /dev/null; then
+        run ${cursorCmd} --install-extension vscodevim.vim 2>/dev/null || true
+        run ${cursorCmd} --install-extension jdinhlife.gruvbox 2>/dev/null || true
+        run ${cursorCmd} --install-extension jnoortheen.nix-ide 2>/dev/null || true
+      fi
+    '';
+  };
+}