[P0] Duplicate routers/providers in main.tsx and App.tsx

[cursor]

Summary

BrowserRouter, ThemeProvider, and CssBaseline are instantiated in both main.tsx and App.tsx, creating nested routers and redundant contexts.

Impact

• Double routing can cause navigation bugs
• Extra renders from redundant context providers
• Potential performance issues

Files Affected

• src/main.tsx
• src/App.tsx

Recommendation

Consolidate them into a single top-level wrapper (typically in main.tsx) and render App inside once to avoid double routing and extra renders.

---

Source: Code Review (PR #5)