configure formatters and linters

lua/plugins/nvim-lint.lua

@@ -0,0 +1,80 @@
+-- nvim-lint: Linting support (replaces none-ls diagnostics)
+-- none-ls removed ESLint and many linters, so we use nvim-lint instead
+
+return {
+  "mfussenegger/nvim-lint",
+  event = { "BufReadPre", "BufNewFile" },
+  config = function()
+    local lint = require("lint")
+
+    -- Configure linters per filetype
+    lint.linters_by_ft = {
+      javascript = { "eslint_d" },
+      javascriptreact = { "eslint_d" },
+      typescript = { "eslint_d" },
+      typescriptreact = { "eslint_d" },
+      markdown = { "markdownlint" },
+      php = { "phpcs" },
+    }
+
+    -- Helper: Find project-local executable, fallback to global
+    local function find_executable(names)
+      local cwd = vim.fn.getcwd()
+      local mason_bin = vim.fn.stdpath("data") .. "/mason/bin/"
+      
+      local search_paths = {
+        cwd .. "/node_modules/.bin/",
+        cwd .. "/vendor/bin/",
+        mason_bin,
+      }
+      
+      for _, name in ipairs(names) do
+        for _, path in ipairs(search_paths) do
+          local full_path = path .. name
+          if vim.fn.executable(full_path) == 1 then
+            return full_path
+          end
+        end
+        
+        if vim.fn.executable(name) == 1 then
+          return name
+        end
+      end
+      
+      return nil
+    end
+
+    -- Configure phpcs for WordPress standards
+    lint.linters.phpcs.cmd = find_executable({ "phpcs" }) or "phpcs"
+    lint.linters.phpcs.args = {
+      "-q",
+      "--report=json",
+      function()
+        local phpcs_xml = vim.fn.findfile("phpcs.xml", ".;")
+        if phpcs_xml == "" then
+          phpcs_xml = vim.fn.findfile("phpcs.xml.dist", ".;")
+        end
+        if phpcs_xml == "" then
+          return "--standard=WordPress"
+        end
+        return nil
+      end,
+      "-", -- stdin
+    }
+
+    -- Configure eslint_d to use project-local first
+    lint.linters.eslint_d.cmd = find_executable({ "eslint_d", "eslint" }) or "eslint_d"
+
+    -- Configure markdownlint
+    lint.linters.markdownlint.cmd = find_executable({ "markdownlint" }) or "markdownlint"
+
+    -- Auto-lint on these events
+    local lint_augroup = vim.api.nvim_create_augroup("lint", { clear = true })
+    vim.api.nvim_create_autocmd({ "BufEnter", "BufWritePost", "InsertLeave" }, {
+      group = lint_augroup,
+      callback = function()
+        lint.try_lint()
+      end,
+    })
+  end,
+}