[vega] Update config; make gui config generic. [nvim] Use Snacks smart finder instead of fzf and avoid race condition

home-manager/features/neovim/config/lua/plugins/snacks.lua

@@ -0,0 +1,13 @@
+return {
+  "folke/snacks.nvim",
+  ---@type snacks.Config
+  keys = {
+    {
+      "<leader><space>",
+      function()
+        Snacks.picker.smart()
+      end,
+      desc = "Smart Find Files",
+    },
+  },
+}