configure formatters and linters

lua/plugins/mason-tool-installer.lua

@@ -0,0 +1,24 @@
+-- Mason tool installer for formatters and linters
+-- Note: phpcs/phpcbf already installed globally, not included here
+
+return {
+  "WhoIsSethDaniel/mason-tool-installer.nvim",
+  dependencies = { "williamboman/mason.nvim" },
+  config = function()
+    require("mason-tool-installer").setup({
+      ensure_installed = {
+        -- Formatters
+        "prettier",  -- JS, TS, CSS, JSON, Markdown, HTML
+        "stylua",    -- Lua
+        -- Note: phpcbf already installed globally
+
+        -- Linters
+        "eslint_d",      -- JS, TS (daemon version for speed)
+        "markdownlint",  -- Markdown
+        -- Note: phpcs already installed globally
+      },
+      auto_update = false,
+      run_on_start = true,
+    })
+  end,
+}