v0.4.1 — 配置文件智能合并 + README roadmap 更新

Fix

• 🔧 Installer interactive menu bug — Fixed \r (carriage return) causing "Invalid choice" warning for valid input in curl | bash mode.

Improvement

• 🎨 Beautified installer menu — Replaced plain text menu with box-drawing characters (┌─┐│└┘)
• 💡 Better UX — Pressing Enter defaults to [1] Claude Code; input now accepts commas
• 🛡️ More robust input handling — Strips \r, trims whitespace, accumulates only validated choices
• 📝 README updated — Preview section shows the new interactive menu; install docs highlight --adapter flag
• 📋 README roadmap updated — v0.4.0 moved from "规划中 🔜" to "开发中 🚧"; versioning rule documented