Add custom path aliases (@/components, @/lib) in tsconfig.json

[AlAfiz]

Description

Relative imports like import Button from '../../../../components/ui/Button' are fragile, ugly, and make refactoring difficult. We must use absolute path aliases.

Acceptance Criteria

• Update the compilerOptions.paths in tsconfig.json.
• Add aliases for common directories: "@/*": ["./src/*"], "@components/*": ["./src/components/*"], "@lib/*": ["./src/lib/*"].
• Refactor the existing codebase to replace relative imports with the new absolute aliases.
• Ensure Next.js and ESLint configurations respect these aliases so they don't throw "module not found" errors.

Technical Details

• If using a monorepo structure (like Turborepo), ensure cross-workspace imports are handled cleanly through package.json exports rather than deep path aliases.