fix: clear all marks not persisting changes

The UI was calling storage.clear_all_marks() directly which only cleared
marks in memory. Now uses the main module's method to properly save changes.

Solves: #16

Author: alexekdahl

lua/marksman/ui.lua

@@ -434,16 +434,10 @@ local function setup_window_keymaps(buf, marks, project_name, mark_info, search_
 	end
 
 	local function clear_all_marks()
-		vim.ui.select({ "Yes", "No" }, {
-			prompt = "Clear all marks in this project?",
-		}, function(choice)
-			if choice == "Yes" then
-				local storage = require("marksman.storage")
-				storage.clear_all_marks()
-				close_window()
-				notify("󰃀 All marks cleared", vim.log.levels.INFO)
-			end
-		end)
+		local marksman = require("marksman")
+		marksman.clear_all_marks()
+		close_window()
+		notify("󰃀 All marks cleared", vim.log.levels.INFO)
 	end
 
 	local keymap_opts = { buffer = buf, noremap = true, silent = true }