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.

src/components/ui/Badge.tsx

@@ -0,0 +1,44 @@
+import { HTMLAttributes, forwardRef } from 'react';
+import { cn } from '@/lib/utils';
+
+interface BadgeProps extends HTMLAttributes<HTMLSpanElement> {
+  variant?: 'default' | 'primary' | 'success' | 'warning' | 'danger' | 'outline';
+  size?: 'sm' | 'md';
+}
+
+const Badge = forwardRef<HTMLSpanElement, BadgeProps>(
+  ({ className, variant = 'default', size = 'md', ...props }, ref) => {
+    const baseStyles = 'inline-flex items-center font-mono font-medium transition-all duration-200';
+    
+    const variants = {
+      default: 'bg-[var(--card)] text-[var(--muted-foreground)] border border-[var(--border)]',
+      primary: 'bg-[var(--primary)]/20 text-[var(--primary)] border border-[var(--primary)]/30',
+      success: 'bg-[var(--success)]/20 text-[var(--success)] border border-[var(--success)]/30',
+      warning: 'bg-[var(--accent)]/20 text-[var(--accent)] border border-[var(--accent)]/30',
+      danger: 'bg-[var(--destructive)]/20 text-[var(--destructive)] border border-[var(--destructive)]/30',
+      outline: 'bg-transparent text-[var(--muted-foreground)] border border-[var(--border)] hover:bg-[var(--card-hover)] hover:text-[var(--foreground)]'
+    };
+    
+    const sizes = {
+      sm: 'px-1.5 py-0.5 text-xs rounded',
+      md: 'px-2 py-1 text-xs rounded-md'
+    };
+    
+    return (
+      <span
+        className={cn(
+          baseStyles,
+          variants[variant],
+          sizes[size],
+          className
+        )}
+        ref={ref}
+        {...props}
+      />
+    );
+  }
+);
+
+Badge.displayName = 'Badge';
+
+export { Badge };