Let me read the current home page and chat page to plan the restructuring.

I now understand the full structure. Let me restructure into 3 tabs: 星窝 (home + chat merged), 星域 (探索湾 + 动态 merged), 我的. Let me start with the bottom nav and then build each page.

Now let me build the new 星窝 page that merges the home scene with chat functionality.