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

feat: replace Settings footer with user profile + logout in sidebar

feat: real email OTP via SMTP, forgot password email, Settings on mobile nav

fix: replace PNG logo with SVG, fix workspace delete double-click, remove LFS

feat: enterprise UX + database migration to Singapore

feat: redesign Settings into governance configuration center

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