Add changelog and agent guide

CHANGELOG.md

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+# Changelog
+
+All notable changes to the New Optic website will be documented in this file.
+
+## [1.0.0] - 2026-05-16
+
+### Added
+
+- Built the full multilingual New Optic marketing website.
+- Added French, Arabic, and English language support.
+- Added RTL layout support for Arabic.
+- Added sticky glass navbar with mobile menu and smooth section scrolling.
+- Added premium hero, about, services, collections, trust, contact, and footer sections.
+- Added central editable business configuration in `config/business.ts`.
+- Added structured translation files in `messages/`.
+- Added WhatsApp, phone, map, and QR-code contact CTAs.
+- Added Google Maps QR code asset.
+- Added product collection imagery for prescription glasses, sunglasses, kids glasses, and budget frames.
+- Added desktop-only `liquidGL` progressive enhancement for glass panels.
+- Added magnetic/stretch CTA button interactions.
+- Added mobile performance optimizations, including a compressed mobile background image.
+- Added SEO metadata and local business JSON-LD.
+- Added `Agent.MD` for future development guidance.
+
+### Changed
+
+- Optimized mobile rendering by disabling heavy blur, fixed backgrounds, ambient animations, and WebGL glass below desktop widths.
+- Reworked collection cards from abstract placeholders to image-led product cards.
+- Improved dark-section heading contrast.
+- Corrected French typography and accents.
+
+### Verified
+
+- `npm run build` passes.
+- Initial Gitea release created as `v1.0.0`.
+
+[1.0.0]: http://192.168.1.160:3000/oimwiodev/New-Optic/releases/tag/v1.0.0