chore: upgrade Jink to 0.5.0 and enable mouse tracking, add Jink 0.5.0 TUI framework section to README

- Added Jink to tech stack table
- New section: what Jink is, why it was chosen, Ink vs Jink comparison table
- Documents Jink's role in the project (4 TUI files)
- Maven Central dependency + manual build fallback instructions
- Updated architecture diagram with tui/ package

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/main/java/com/claudecode/tui/JinkReplSession.java

@@ -94,7 +94,8 @@ public class JinkReplSession {
 
         // 启动 jink 渲染（exitOnCtrlC=false，让组件处理 Ctrl+C）
         inkApp = Ink.render(component, false);
-
+        // 启用鼠标追踪
+        inkApp.enableMouseTracking();
         // 设置 inkApp 引用，使组件可以通过 writeRaw 设置终端标题
         component.setInkApp(inkApp);