v0.78.8

Added

• Read-only offline support: the service worker now network-first-caches a whitelist of read-only GET /api/v1/* data paths (calendar, tasks, shopping, contacts, dashboard) in a release-keyed oikos-api-<version> cache, so the last-seen data stays viewable when offline. The calendar shows a subtle "Offline – as of: {time}" banner (from the cached x-cached-at timestamp) when served from cache. (Discussion #388)

Changed

• Service worker API handling: mutations, /auth/*, and non-whitelisted GET requests are passed straight to the network and never cached; state-changing requests that fail offline now surface a clear "changes aren't possible while offline" message instead of a raw network error.

Security

• Offline cache isolation: the offline API cache is wiped on logout and session expiry so a second user on the same device cannot see the previous user's cached data, and stale oikos-api-* caches from prior versions are purged on every service-worker update.