docs: README refactor

README.md

@@ -1,11 +1,11 @@
-# kirakira
+# キラキラ kirakira
 
 [![AI-DECLARATION: copilot](https://img.shields.io/badge/䷼%20AI--DECLARATION-copilot-fee2e2?labelColor=fee2e2)](https://ai-declaration.md)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) ![Powered by Mistral](https://img.shields.io/badge/Powered_by-Mistral_AI-FA520F?logo=mistral-ai&logoColor=white) ![Flutter](https://img.shields.io/badge/Flutter-02569B?logo=flutter&logoColor=white) [![Forked from flash-mail](https://img.shields.io/badge/Forked_from-sarthakkimtani%2Fflash--mail-59636e?logo=github&logoColor=white)](https://github.com/sarthakkimtani/flash-mail)
 
-A mobile client for [Smol Mail](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. Sibling of the reference CLI client (`https://smol.place`) and the browser client (`https://code.randogoth.com/randogoth/gsmol`).
+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 networking layer was replaced end to end with a from-scratch Smol Mail implementation (`lib/smol/`: crypto, Noise handshake, framing, client flows), and the UI was redesigned around a Material 3 theme — 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.
+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
 
@@ -14,30 +14,30 @@ kirakira began as [FlashMail](https://github.com/sarthakkimtani/flash-mail), a F
 - 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.
 
+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/smol/          the protocol: crypto, Noise handshake, framing, client flows
+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
-test/              protocol vectors, store tests, a live e2e round-trip
+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
+flutter run --flavor prod
 ```
 
-`test/e2e_test.dart` runs a live round-trip against `https://smol.place/smolmaild.py` on `127.0.0.1:1961` and skips itself when nothing's listening there.
+`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.
-
-## Notes and limits
-
-- No server push in v1 — fetch is manual.
-- The seed lives in app storage; a compromised device is a compromised identity.
-- Rotation isn't revocation — a stolen key can still rotate onward. Settings surfaces rotations for out-of-band verification rather than applying them silently.
 
 ## License