kirakira/README.md

# キラキラ kirakira

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A mobile and desktop client for [smolmail](https://smol.place), a minimalist end-to-end encrypted mail protocol: one Ed25519 identity, five operations, sealed and signed messages over a Noise_NX transport.

kirakira began as [FlashMail](https://github.com/sarthakkimtani/flash-mail), a Flutter UI template for a disposable-email app built on mail.tm. Its protocol core is now [fumi-core](https://code.randogoth.com/randogoth/fumi), the Rust library the reference CLI is built on: `native/` wraps it into a C ABI and ships it in the APK as `libsmol_mail_native.so` (SQLite bundled), `lib/native/` speaks that ABI over dart:ffi, and `lib/smol/` is the thin facade the UI reads. The UI is Material 3 — dark navy and mint green by default, with a matching light theme — built from a single `ColorScheme` and `AppColors` extension rather than hardcoded colors per screen.

## What it does

- Create or restore an identity from a 32-byte seed — that's the only secret.
- Pin a server's key, register or recall an address, then fetch and send sealed mail.
- Trust-on-first-use for server and contact keys, with rotation support and on-screen warnings for anything unverified.
- Export/import inbox, sent mail, contacts and server pins as one shareable backup file — never the seed.
- Share your address as a `smol://` QR code, and react to any `smol://` link a scanner or browser hands the device: its key lands in the confirm-first import dialog.

Mail, contacts and pinned server keys live in fumi-core's SQLite store, bundled into the native library; the seed, read marks and settings stay app-side in Hive.

## Layout

```
lib/native/        dart:ffi binding: handles, error codes, isolate plumbing
lib/smol/          thin facades over the binding: address, store, client
lib/presentation/  screens, widgets and theme (Riverpod + auto_route)
lib/data/          Riverpod providers
native/            Rust wrapper crate: the C ABI over fumi-core, pinned by rev
integration_test/  Patrol device tests against a live server
test/              store, recall, binding, interop and e2e tests
```

## Run and verify

```
devbox run build-native-android   # the .so the APK loads — once per Rust change
devbox run analyze
devbox run test
flutter run --flavor prod
```

`test/e2e_test.dart` runs a live round-trip against the local bunshin on `127.0.0.1:1961` and skips itself when nothing's listening there. On-device flows are covered by the Patrol suite — `devbox run test-integration` builds the `integration` flavor (installed beside the real app, its data cleared between tests) and drives onboarding, registration, fetch cancellation, rotation and the unchanged-key refresh against the same server. To exercise the smol:// deep link by hand, scan `test-qr.png` — it encodes the `kirakira@localhost` identity — with any device camera and confirm the import dialog.

## License

MIT — see LICENSE.md.