[Stock Trading Web App Upgrade](https://freelancer.com/projects/40642845.html)
I have a live, fully functional stock-trading web app that now needs a top-to-bottom refresh. The scope is threefold:
1) User interface
The dashboard layout, interactive charts and graphs, and overall navigation must become cleaner, faster and more intuitive, without losing our current branding. Responsive behaviour on desktop and mobile is essential.
2) Trading algorithms and strategies
I want the existing strategies retained but enhanced. Please refactor the code, add meaningful logging, tighten risk controls and deliver measurable speed-ups in execution. Any quick-win quantitative improvements are welcome, provided the core logic remains recognisable.
3) Backend performance & scalability
Under loa...