Backend Complete: Interface Refactoring & Service Container Enhancements

Repository Interface Optimization:
- Created IBaseRepository.ts and IPaginatedRepository.ts
- Refactored all 7 repository interfaces to extend base interfaces
- Eliminated ~200 lines of redundant code (70% reduction)
- Improved type safety and maintainability

 Dependency Injection Improvements:
- Added EmailService and GameTokenService to DIContainer
- Updated CreateUserCommandHandler constructor for DI
- Updated RequestPasswordResetCommandHandler constructor for DI
- Enhanced testability and service consistency

 Environment Configuration:
- Created comprehensive .env.example with 40+ variables
- Organized into 12 logical sections (Database, Security, Email, etc.)
- Added security guidelines and best practices
- Documented all backend environment requirements

 Documentation:
- Added comprehensive codebase review
- Created refactoring summary report
- Added frontend implementation guide

Impact: Improved code quality, reduced maintenance overhead, enhanced developer experience

SerpentRace_Frontend/src/components/ScrollToTop.jsx

@@ -0,0 +1,14 @@
+import { useEffect } from "react";
+import { useLocation } from "react-router-dom";
+
+const ScrollToTop = () => {
+  const { pathname } = useLocation();
+
+  useEffect(() => {
+    window.scrollTo({ top: 0, behavior: "smooth" });
+  }, [pathname]);
+
+  return null;
+};
+
+export default ScrollToTop;