feat: add Citations and WatchlistChat components, integrate with API

- Implemented Citations component to display citation data.
- Created WatchlistDrawer and ChatSidebar components for managing watchlists and AI chat functionality.
- Integrated API calls for watchlist management and chat interactions.
- Updated index.tsx to include new components in the main application layout.
- Added API client in lib/api.ts for structured API interactions.
- Developed Alerts, Dashboard, Portfolio, Routines, Screener, and Report pages with relevant data fetching and UI components.
- Introduced styles in tokens.css for consistent theming across the application.
- Configured TypeScript and Vite for project setup and development.

.gitignore

@@ -2,6 +2,7 @@
 .env
 .env.local
 .env.*.local
+!.env.example
 .claude-flow/data/
 .claude-flow/logs/
 .claude-flow/sessions/
@@ -17,3 +18,27 @@ ruvector.db
 *.db-wal
 .mcp.json
 CLAUDE.md
+
+# Go backend (single binary, pure Go, no CGO)
+*.exe
+*.out
+*.test
+*.prof
+coverage.out
+coverage.html
+bin/
+
+# Frontend (SolidJS + Vite + pnpm; lockfile stays tracked)
+node_modules/
+dist/
+.vite/
+*.tsbuildinfo
+
+# Runtime data & logs (DB_PATH=data/flowsight.db, server logs)
+data/
+!data/.gitkeep
+*.log
+
+# OS / editor noise
+.DS_Store
+Thumbs.db