- Rewrite AgentChatPage as primary interface with Perplexity-style layout
- Add right sidebar with Market Ticker, Positions, and Trader Status panels
- Sidebar is collapsible and responsive (auto-hides on mobile)
- Each sidebar section independently collapsible
- Chat area: centered 720px max-width with smooth streaming effect
- Simple markdown rendering (bold, code blocks, inline code)
- Quick action chips redesigned as pill buttons with hover effects
- Input upgraded to auto-resizing textarea
- New components: MarketTicker, PositionsPanel, TraderStatusPanel
- Dark theme consistent with NOFXi brand colors
- Real-time data via SWR for positions and trader status
