P3: PWA Implementation for Local-First Access

[RamonRiosJr]

Configure Vite PWA plugin to allow users to install the Humanos Foundation site as a desktop/mobile app for offline-capable access to their own sovereign data journals.

[RamonRiosJr]

🏛️ Scope Reviewclose_issues.batAStatus: DEFERRED TO SAAS CORE.close_issues.batANotes: Foundation repository is officially locked as an informational Zero-Knowledge boundary. Heavy PWA logic and local-first SQLite DB logic will be natively handled in the aurahos.io client app. Closing to maintain repository hygiene.