indifferentketchup 5932682193 feat(mobile): right-rail as drawer on mobile, header toggle button ...

Reverts v1.6.1's max-md:hidden wrapper around RightRail. On mobile,
RightRail now renders as a fixed right-side drawer (w-[85vw],
max-w-sm) toggled by a new FolderTree button in the Session header.

- New useRightRailDrawer hook mirrors useSidebarDrawer (Context +
  auto-close on route change).
- New MobileRightRailBackdrop component in App.tsx mirrors the
  existing MobileBackdrop for the left sidebar.
- RightRail computes an isOpen synthesis: on mobile, reads the
  drawer Context; on desktop, reads the persistent internal state.
  The existing tree-load effect and open_file_in_browser
  subscription share this plumbing via openRail / closeRail
  helpers.
- The desktop floating chevron handle is hidden on mobile (the
  Session header's FolderTree button replaces it).
- Session header gains a mobile-only FolderTree button after the
  ModelPicker, calling toggle() on the drawer Context.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-16 06:37:13 +00:00

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