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

.gitignore

@@ -34,3 +34,9 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+
+# graphify analysis output (large generated files)
+/graphify-out/
+
+# local secrets
+.env.local