feat: admin API integration, LogoMark, settings page, i18n, RTL font, docs

- Wire admin API into homepage + templates page (ISR 60s, null fallback)
- Add src/lib/admin-api.ts with safeFetch helper
- Add adminProjectToTemplateItem + adminProjectToCatalogTemplate mappers
- Add LogoMark SVG component, replace Sparkles icon in Navbar/Footer/Sidebar
- Add public/favicon.svg (SVG brand mark)
- Rewrite opengraph-image.tsx with FlatRender branding
- Add RTL/Persian font cascade: unlayered [dir=rtl] block forces Vazirmatn
- Dashboard Settings page: Profile, Security, Billing, Notifications sections
- Add src/lib/supabase/client.ts browser client
- Admin API: GET /me, PATCH /profile, POST /change-password endpoints
- Admin API DTOs: AdminUserDto, UpdateProfileRequest, ChangePasswordRequest
- Admin UI Settings page with TanStack Query + mutations
- Add CLAUDE.md + README.md to both repos for new-machine onboarding
- Update PROJECT_MEMORY.md with session log
- Add appsettings.Development.json.example template

public/favicon.svg

@@ -0,0 +1,7 @@
+<svg width="32" height="32" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect width="40" height="40" rx="9" fill="#2563EB"/>
+  <path d="M12 12.5L12 27.5L24.5 20L12 12.5Z" fill="white"/>
+  <rect x="27" y="13" width="7" height="2.5" rx="1.25" fill="white" fill-opacity="0.9"/>
+  <rect x="27" y="18.75" width="5.5" height="2.5" rx="1.25" fill="white" fill-opacity="0.75"/>
+  <rect x="27" y="24.5" width="4" height="2.5" rx="1.25" fill="white" fill-opacity="0.6"/>
+</svg>