Wraps Views, Folders, Shared-with-me, and Heaps in a single
click-to-toggle Library section with a consistent h-9 eyebrow header
(matching the new Date header). Heaps keeps its own eyebrow
sub-section so it sits alongside Folders, and heap rows now reserve
the same chevron-slot spacer as leaf folder rows so indentation
lines up across hierarchies. ActiveHeapCard moves to the very top
of the sidebar so it stays visible under any panel state.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
c5582ffc65