Behaviour-preserving move of layout state out of ShellPage:
- useMobileSidebar: the mobile navigation open state, closing it at the
desktop breakpoint, and the edge-swipe touch handlers that were inline on
the shell root.
- useBotsSidebarCollapse: the per-user collapsed preference and the
edge-drag pointer handlers that were inline on the sidebar edge button.
- useComputerViewport: the on-screen-keyboard viewport tracking for the
full-screen computer.
Each hook is called where its effect was, so effect order is unchanged. The
inline JSX handlers become named functions with identical bodies, still
recreated on every render as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MRtGG9ARfqqhma3t85Ro2u