chore(neovim): update astrocore features section

modules/neovim/lua/plugins/astrocore.lua

@@ -10,18 +10,24 @@ return {
   opts = {
     -- Configure core features of AstroNvim
     features = {
-      large_buf = { size = 1024 * 500, lines = 10000 }, -- set global limits for large files for disabling features like treesitter
       autopairs = true,   -- enable autopairs at start
       cmp = true,         -- enable completion at start
-      diagnostics_mode = 3,                          -- diagnostic mode on start (0 = off, 1 = no signs/virtual text, 2 = no virtual text, 3 = on)
+      diagnostics = true, -- enable diagnostics at start
       highlighturl = true, -- highlight URLs at start
       notifications = true, -- enable notifications at start
       signature_help = true, -- enable automatically showing signature help
+      large_buf = {       -- set global limits for large files for disabling features like treesitter
+        size = 1024 * 100,
+        lines = 10000,
+        line_length = 1000,
+      },
     },
     -- Diagnostics configuration (for vim.diagnostics.config({...})) when diagnostics are on
     diagnostics = {
-      virtual_text = true,
+      underline = true,
+      update_in_insert = false,
       virtual_lines = { current_line = true },
+      virtual_text = true,
     },
     -- vim options can be configured here
     options = {