fix: updated harpoon2 config (using add function instead of append)

after/plugin/harpoon.lua

 local harpoon = require("harpoon")
 
+-- harpoon:setup()
 -- REQUIRED
-harpoon:setup()
+harpoon:setup({})
 -- REQUIRED
 
-vim.keymap.set("n", "<leader>a", function() harpoon:list():append() end)
+-- basic telescope configuration
+local conf = require("telescope.config").values
+local function toggle_telescope(harpoon_files)
+	local file_paths = {}
+	for _, item in ipairs(harpoon_files.items) do
+		table.insert(file_paths, item.value)
+	end
+
+	require("telescope.pickers").new({}, {
+		prompt_title = "Harpoon",
+		finder = require("telescope.finders").new_table({
+			results = file_paths,
+		}),
+		previewer = conf.file_previewer({}),
+		sorter = conf.generic_sorter({}),
+	}):find()
+end
+
+vim.keymap.set("n", "<C-e>", function() toggle_telescope(harpoon:list()) end,
+	{ desc = "Open harpoon window" })
+
+vim.keymap.set("n", "<leader>a", function() harpoon:list():add() end)
 vim.keymap.set("n", "<C-e>", function() harpoon.ui:toggle_quick_menu(harpoon:list()) end)
 
 vim.keymap.set("n", "<C-s>", function() harpoon:list():select(1) end)