nixvim: add osc52 clipboard and arrow key window navigation

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

modules/home/nixvim/keymaps.nix

@@ -63,6 +63,10 @@ in {
     (mk "<C-j>" "<C-w>j" "下のウィンドウへ")
     (mk "<C-k>" "<C-w>k" "上のウィンドウへ")
     (mk "<C-l>" "<C-w>l" "右のウィンドウへ")
+    (mk "<C-Left>" "<C-w>h" "左のウィンドウへ")
+    (mk "<C-Down>" "<C-w>j" "下のウィンドウへ")
+    (mk "<C-Up>" "<C-w>k" "上のウィンドウへ")
+    (mk "<C-Right>" "<C-w>l" "右のウィンドウへ")
 
     # Buffer Bar
     (mk "[b" "<Cmd>BufferPrevious<CR>" "前のバッファーに移動")

modules/home/nixvim/options.nix

@@ -44,6 +44,7 @@
     globals = {
       mapleader = " ";
       maplocalleader = " ";
+      clipboard = "osc52";
     };
   };
 }