refactor: Replace date-fns with dayjs for smaller bundle size

[Abdelkaderbzz]

Description

Replace date-fns with dayjs for date/time handling to reduce bundle size while maintaining functionality.

Comparison

Feature	date-fns	dayjs
Bundle Size	~75KB	~2KB
Tree-shakeable	Yes	Plugin-based
Immutable	Yes	Yes
i18n support	Yes	Yes (plugins)
API style	Functional	Chainable

Implementation

1. Install dayjs

bun add dayjs
bun remove date-fns

2. Migration example

// Before (date-fns)
import { format, parseISO } from 'date-fns';
const formatted = format(parseISO(date), 'PPP');

// After (dayjs)
import dayjs from 'dayjs';
const formatted = dayjs(date).format('MMMM D, YYYY');

3. Add locale support if needed

import dayjs from 'dayjs';
import 'dayjs/locale/ar';

dayjs.locale('ar'); // Set locale globally or per instance

Files to update

• All files importing from date-fns
• package.json