fix(config): cleanup bugs, redundancy, and add agent-friendly auto-reload

- remove broken mini.files mappings (plugin disabled; yazi is used now)
- dedupe tint.nvim spec (drop plugins/theme.lua, keep ui.lua)
- drop dead copilot cmp source + moot Supermaven symbol (Supermaven stays inline)
- remove yaml from biome formatters (biome has no yaml support)
- collapse 3x biome chain to a single biome-check pass
- remove duplicate insert-mode jk mapping
- lazy-load tailwind-tools by filetype
- diagnostics: update_in_insert = false
- untrack .nvimlog, add .gitignore
- auto-reload files changed on disk (autoread + checktime autocmds)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lua/configs/cmp.lua

@@ -3,11 +3,11 @@ local lspkind = require "lspkind"
 local nvchad_options = require "nvchad.configs.cmp"
 
 local options = {
+  -- Supermaven handles AI completion inline (ghost text, accept with <C-Enter>);
+  -- it is not a cmp source, so it is intentionally absent here.
   sources = {
-    -- { name = "supermaven" },
     { name = "nvim_lsp" },
     { name = "luasnip" },
-    { name = "copilot" },
     { name = "buffer" },
     { name = "nvim_lua" },
     { name = "path" },
@@ -17,7 +17,6 @@ local options = {
     format = lspkind.cmp_format {
       mode = "symbol",
       max_width = 50,
-      symbol_map = { Supermaven = "" },
     },
   },
 }

lua/configs/conform.lua

@@ -2,10 +2,10 @@ local options = {
   formatters_by_ft = {
     lua = { "stylua" },
     rust = { "rustfmt", require_cwd = true },
-    javascript = { "biome-check", "biome", "biome-organize-imports" },
-    typescript = { "biome-check", "biome", "biome-organize-imports" },
-    json = { "biome-check", "biome" },
-    yaml = { "biome-check" },
+    -- biome-check runs format + organize-imports + safe lint fixes in one pass
+    javascript = { "biome-check" },
+    typescript = { "biome-check" },
+    json = { "biome-check" },
     solidity = { "forge_fmt" },
     nix = { "nixfmt" },
     toml = { "taplo" },

lua/configs/lspconfig.lua

@@ -59,7 +59,7 @@ M.defaults = function()
         [vim.diagnostic.severity.INFO] = "",
       },
     },
-    update_in_insert = true,
+    update_in_insert = false,
     underline = true,
     severity_sort = true,
     virtual_text = false,