tweaks to <leader>n and use clippy with rust

lua/user/colorscheme.lua

@@ -15,7 +15,7 @@ require("catppuccin").setup({
         return {
             TreesitterContext = { bg = colors.mantle },
             TreesitterContextLineNumber = { bg = colors.mantle },
-            TreesitterContextBottom = { style = { "underline" } },
+            -- TreesitterContextBottom = { style = { "underline" } },
             MultiCursor = { bg = colors.red },
             VM_Cursor = { bg = colors.red },
         }

lua/user/keymaps.lua

@@ -130,9 +130,11 @@ local function clean_screen()
     if vim.o.number then
         vim.diagnostic.show()
         vim.opt.signcolumn = "yes"
+        vim.cmd("syntax on")
     else
         vim.diagnostic.hide()
         vim.opt.signcolumn = "no"
+        vim.cmd("syntax off")
     end
 end
 

lua/user/lsp/settings/rust_analyzer.lua

@@ -0,0 +1,9 @@
+return {
+  settings = {
+    ["rust-analyzer"] = {
+      checkOnSave = {
+        command = "clippy",
+      },
+    },
+  },
+}