Feat/redesign

[Creylay]

Summary

This PR replaces the existing single-page landing with a full Community Hub — a multi-route React application covering all of dashAI's public-facing content.

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What changed

New architecture

• Replaced the scroll-based single-page layout with a client-side hash router (#home, #models, #plugins, #contribute, #download, #community, #about)
• Each route is an isolated React component — only the active route is mounted
• Route transitions scroll to top; sub-anchors (#guide-*, #first-pr) navigate within /contribute and scroll to the target element

New pages

Route	Content
#home	Hero, app mockup carousel, module cards, featured models, GitHub releases feed, institutions
#models	Filterable catalog of 60 models + 12 base abstractions
#contribute	8 contribution cards (plugins, PRs, no-code) + 8 specific guides with :target highlight
#download	Native installers + pip install instructions
#plugins	Coming soon page
#community	Discord, newsletter, email
#about	Mission, institutions, historical contributors

Internationalization

• Kept i18next (same library as before)
• Added Portuguese (PT) as a third language alongside ES and EN
• Translations split into 9 namespaces: navbar, home, contribute, models, download, plugins, community, about, footer
• Each component uses useTranslation("namespace") — no prop drilling

New components (components/community/)

• SvgDefs — all SVG symbol definitions (logos, icons)
• Navbar — sticky nav with language switcher dropdown (ES/EN/PT)
• Footer
• AppMockup — interactive carousel (3 slides: Datasets, Models, Generative) with circular navigation, tabs, arrows, dots, touch swipe, and keyboard
  support
• Route components: HomeRoute, ContributeRoute, ModelsRoute, DownloadRoute, PluginsRoute, CommunityRoute, AboutRoute

Design system

• Replaced Tailwind CSS with the Community Hub's own CSS design system (CSS custom properties, no utility classes)
• Light-first palette based on the official dashAI Brand v2 colors
• Module accent colors: datasets (orange), models (blue), generative (green), plugins (purple)

Live data

• GitHub API fetch on load: updates version badge and activity releases feed
• Graceful fallback to hardcoded content if API is unavailable

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Files

• app/page.tsx — hash router + GitHub API fetch
• app/globals.css — new CSS design system
• app/i18n.ts — updated with 9 namespaces and PT support
• app/layout.tsx — updated metadata and Google Fonts
• public/locales/{es,en,pt}/ — 9 JSON files per language
• public/images/ — official dashAI Brand v2 logos (SVG + PNG)