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HealthLog/messages
Marc-André Bombeck bb08aa42dc feat(pwa): real offline read value via SW data cache + query persistence
An installed PWA opened offline rendered empty skeletons forever: the
service worker hard-excluded every /api/* path and there was no client
query persistence. Close both gaps for read value.

Service worker: add a stale-while-revalidate branch for an allowlist of
safe GET /api/* reads (dashboard snapshot + widgets, measurements,
medications, insights, analytics, version) in a release-versioned
healthlog-data cache. Two-layer refusal — a path deny guard for any
auth/token/session/login segment plus a body-level secret refusal for
hlk_/hlr_/sk- shapes and no-store responses — so a secret-shaped body or
an auth surface can never be persisted. Mutations stay network-only.

Client: add a dependency-free IndexedDB query persister that hydrates the
last successful reads before the first authenticated paint, build-version
and age gated, debounced on cache change, with an auth/session/admin/token
denylist. Cleared on logout alongside the SW page and data caches so a
shared device never leaks one account's data.

Offline banner now states it is showing last-synced data when a cached
snapshot is present. Bump release to v1.18.6.
2026-06-18 15:18:48 +02:00
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