fix(lsp): centralize LspOrganize command and add safety checks

Moves the `LspOrganize` command from a buffer-local definition within
the `tsserver` on_attach function to a single, global user command.
This refactoring prevents command duplication and potential errors.

The new global command is now guarded by a check to ensure a `tsserver`
client is attached to the current buffer before executing, making it
safe to call from any context. The redundant local command definition
has been removed.

Author: Copilot

lua/plugins/nvim-lspconfig.lua

@@ -225,21 +225,31 @@ return {
     end
 
     if vim.fn.executable("typescript-language-server") == 1 then
+      -- Create the LspOrganize command once globally to avoid duplication warnings
+      -- Use force = true to allow recreation on config reload
+      vim.api.nvim_create_user_command("LspOrganize", function()
+        -- Check if a TypeScript LSP client is attached to the current buffer
+        local clients = vim.lsp.get_clients({ bufnr = 0, name = "ts_ls" })
+        if #clients == 0 then
+          vim.notify("No TypeScript LSP client attached to current buffer", vim.log.levels.WARN)
+          return
+        end
+        
+        vim.lsp.buf.execute_command({
+          command = "_typescript.organizeImports",
+          arguments = { vim.api.nvim_buf_get_name(0) },
+          title = "",
+        })
+      end, { desc = "Organize Imports", force = true })
+
       lspconfig.ts_ls.setup({
-        on_attach = function(client, bufnp)
-          on_attach(client, bufnp)
+        on_attach = function(client, bufnr)
+          on_attach(client, bufnr)
 
           client.server_capabilities.documentFormattingProvider = false
           client.server_capabilities.documentRangeFormattingProvider = false
-          local keymap_opts = { buffer = bufnp, noremap = true, silent = true }
+          local keymap_opts = { buffer = bufnr, noremap = true, silent = true }
           vim.keymap.set("n", "<leader>xo", "<cmd>LspOrganize<CR>", keymap_opts)
-          vim.api.nvim_create_user_command("LspOrganize", function()
-            vim.lsp.buf.execute_command({
-              command = "_typescript.organizeImports",
-              arguments = { vim.api.nvim_buf_get_name(0) },
-              title = "",
-            })
-          end, { desc = "Organize Imports" })
         end,
         capabilities = caps,
         filetypes = {