feat: dynamic UI texts system + admin panel editor + Vazirmatn local font + bug fixes
- Add getText() system for all homepage sections (Header, Hero, FeaturedProducts, SmartAdvisor, VetGallery, Footer)
- Add UITexts admin page in frontend/admin-panel with search, group collapse, per-key save
- Add seed-ui-texts.ts with 102 texts in 9 groups
- Add local VazirmatnVariable.woff2 font, remove CDN + Inter references
- Fix hero image path, productService return type { data, meta }
- Fix ArchivePage pagination + CATEGORIES list + breadcrumbs
- Fix BlogPage/Wiki page links + brightness-0 invert removal
- Fix IngredientWiki search + product links + placeholder
- Fix all getProducts() callers for { data } destructuring
- Fix sitemap.ts, CartDrawer, B2BPortal, CheckoutPage type issues
- Add .gitignore for /fonts/ and /backend/uploads/
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