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Yuvomi-App/docs/architecture.md
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docs: record verified native preview and unfinished PWA parity
Replace current wrapper claims with native architecture/security/build evidence, preserve historical documents, track all thirty pages and explicit release gates, correct brand attribution and provide the twelve-section delivery report without claiming completion. Native signing remains paused and Apple application/device validation outstanding.
2026-10-21 09:13:36 +02:00

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Native client architecture

The requested product is a native reconstruction of Yuvomi's PWA, not a native window around that website. Both shipping entry points now render native views:

Responsibility Android iOS
Screens and navigation Jetpack Compose / Material 3 primitives, Yuvomi tokens SwiftUI, Yuvomi tokens
Application state AndroidViewModel + Compose state MainActor ObservableObject
JSON API HttpsURLConnection, serialized worker URLSession actor, bounded streaming delegate
Session ownership Explicit origin-bound secure-cookie jar Private ephemeral URLSession cookie storage
Persistent cookies AES-GCM, AndroidKeyStore key, origin as authenticated data Keychain, WhenUnlockedThisDeviceOnly, origin-scoped account
Server logic Existing unmodified Yuvomi API Existing unmodified Yuvomi API

There is no WebView/WKWebView in either shipped source tree and no browser fallback for missing modules. The old implementation and browser tests are archived in legacy/; their results are historical, not evidence for this client.

The first native slice contains HTTPS onboarding, setup/password/TOTP login, session restoration, a basic dashboard, task/note/shopping interactions, read-only permission handling and local sign-out/server removal. Exact feature and visual parity is tracked in native parity, not inferred from a list of navigation destinations. The other modules remain unfinished.

Transport and state boundaries

  • One configured root HTTPS origin/port; system certificate validation only.
  • API calls never follow redirects. No cookie or Authorization state is replayed to another host. Authentication proxies returning HTML are not treated as APIs.
  • JSON reads have byte limits and timeouts. Writes are not queued for offline replay. Only a server-declared csrf_invalid rejection permits one token refresh and retry; ordinary authorization failures and transport failures do not.
  • Server session cookies are persisted, not passwords or TOTP/recovery codes. Session-only cookies are not converted to long-lived cookies.
  • Native UI mutations wait for the server result. Permissions remain enforced server-side; sparse module/widget permissions also control native affordances.
  • Local removal clears the native cookie vault and in-memory records. It is not remote revocation. Logout attempts server revocation and still erases the local session if the server cannot be reached.
  • A prior WebView prototype installation may retain its old OS website data. This data is never imported by the native client. Clear app data/reinstall the prototype before reviewing this native preview if complete legacy erasure is required; no migration of private household records is performed.

Explicit gaps

No native OIDC handoff has been implemented. A browser sign-in is not represented as a successful native API session. Password reset/invitation flows, the remaining modules, configurable dashboard, uploads/downloads, notification integrations, offline cache, localization parity and visual baseline comparison remain open. The signing setup was paused by the maintainer's native-rebuild correction; it must not be used to label this incomplete client as a finished release.