chore: refactor project structure and clean up unused components

- Updated `TODO.md` to reflect new testing tasks and final structure expectations.
- Simplified TypeScript path mappings in `tsconfig.json` for better clarity.
- Revised business logic separation rules in `.cursor/rules` to align with new directory structure.
- Deleted unused client components and services to streamline the codebase.
- Adjusted import paths in scripts to match the new structure.

tsconfig.json

@@ -19,12 +19,7 @@
       }
     ],
     "paths": {
-      "@/*": ["./src/*"],
-      "@/services/*": ["./services/*"],
-      "@/lib/*": ["./lib/*"],
-      "@/components/*": ["./components/*"],
-      "@/clients/*": ["./clients/*"],
-      "@/hooks/*": ["./hooks/*"]
+      "@/*": ["./src/*"]
     }
   },
   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],