Removed all product layer sections (Build, Layouts, Infrastructure,
Growth, Monetize, Support, Analytics) from the left sidebar — these
are now handled by the in-page left nav inside each tab.
Sidebar now shows: logo, Projects/Activity/Settings global nav,
project name + colored status dot when inside a project, and the
user avatar/sign out at the bottom. Nothing else.
Cleaned up all dead code: SectionHeading, SectionRow, SectionDivider,
SURFACE_LABELS, SURFACE_ICONS, AppEntry interface, apps state,
apps fetch, surfaces/infraApps variables.
Made-with: Cursor
Mark Henderson
93a2b4a0ac