WordPress Arabic Language Integration

I need my existing English WooCommerce site to run flawlessly in Arabic without touching the current design. All Arabic copy is ready to upload; your job is strictly technical implementation and quality assurance.

Here’s the setup I’m after:
• Use whatever multilingual plugin you feel is best—WPML, Polylang, or another solid option—so long as it stays well-supported and future-proof.
• Serve the Arabic version from a language folder ( website.com/ar ).
• Duplicate every English page in Arabic and apply proper RTL styling, spacing, and typography.
• Extend localisation to all WooCommerce elements: product pages, cart, checkout, customer emails, and any dynamic messages.
• Mirror menus, buttons, footers, header widgets, and forms in Arabic.
• Add a visible Arabic ↔ English switcher on both desktop and mobile.
• Keep responsiveness identical across breakpoints.
• Run end-to-end testing: links, forms, checkout flow, email triggers, and overall UX before hand-off.

Deliverables will be approved when:
1. Every page/product loads in Arabic at /​ar with correct RTL layout.
2. Language switcher toggles seamlessly between English and Arabic without URL or cart issues.
3. WooCommerce emails reach the inbox in Arabic where appropriate.
4. No console errors or style breakages appear on major browsers and devices.

If this is clear, let me know which plugin you plan to use and your estimated timeline for completion.