feat: render in-page interactive elements as Links to support right-click open in new tab

feat: light/dark mode toggle, sharper text

fix: complete knowledge lifecycle and activity pagination

feat: enterprise UX + database migration to Singapore

fix: search page input layout, topbar search button, back button on doc workspace

feat: redesign Settings into governance configuration center

fix: notification badge persists read state across polls

feat: wire notification bell with real activity feed

feat: complete end-to-end platform with all standout behaviors

feat: add durable workflows, proposal review, and frontend foundation