ABA Velocity Dash: UX pass preview

Branch ux/sloane-design-pass-20261023. Internal review only. Sample data only (no live data, saving is disabled, some pages show their error state on purpose).

• Home Dash
• Sales › Pipeline
• Sales › Opportunities
• Sales › Companies
• Sales › Follow-ups
• Sales › E-sign (error state demo)
• Home Dash › Your actions
• Billing › Invoices & hours (error state demo)
• Projects
• Finance › Books (error state demo)
• Settings
• Quotes is left out of this preview on purpose (internal pricing screens).
• Unknown page (not-found state)