极简工具对话气泡图标

极简风格应用图标，对话气泡内包含工具，干净的线条艺术，简单的几何形状，扁平化设计，单色轮廓，白色背景，现代UI图标，矢量风格，极简美学

minimalist app icon, chat bubble with tools inside, clean line art, simple geometric shapes, flat design, single color outline, white background, modern UI icon, vector style, minimalist aesthetic