Knowledge requests: sections in the hub's tab row

Gera, 2026-10-23: keep the onboarding hub's tab design (the same component), but put the page's own sections in it. The pages (Policies, Buildings, Vendors, From onboarding) live only in the left side nav.

Same component, side by side (local server, stage data, synthetic TEST companies)

Top: the onboarding hub's header row (Leasing onboarding: Fees & deposits | People). Bottom: Knowledge requests › Policies with its two sections (Building and amenities | Rules). Both are PillNav + PillNavItems from src/components/ui/PillNav.tsx, with PendingDotSlot for each tab's open-items dot.

Hub tab row above the Policies sections row: identical pills, purple bar and red dots

The Policies page with the side nav

Knowledge requests Policies page: side nav lists the pages, the header row shows the two sections PropFlow Docs