docs(mobile): phase 0 quickstart + roadmap pointer

apps/mobile/README.md

@@ -1,27 +1,71 @@
 # @chat-app/mobile
 
-Expo + React Native client for iOS and Android.
+Expo + React Native client for **Netralax** on iOS and Android.
 
 ## Prerequisites
 
 - Node 22+, pnpm 9+
-- Xcode (iOS) / Android Studio (Android)
+- Xcode (iOS) / Android Studio (Android) — only needed for local
-- Optional: `npm i -g eas-cli` for cloud builds
+  prebuild + emulator runs; EAS Build runs everything in the cloud.
+- An Expo account (free) — required for `eas init` below.
+- Optional: `npm i -g eas-cli` for the CLI commands. If you skip
+  globals, prefix every `eas` invocation with `npx eas-cli`.
 
-## Dev
+## Phase 0 quickstart
 
 ```bash
-# from repo root
+# From the repo root.
 pnpm install
-pnpm mobile:dev       # expo start
+
-pnpm mobile:ios       # native iOS run
+# One-time: claim an EAS project ID. This rewrites the placeholder
-pnpm mobile:android   # native Android run
+# `extra.eas.projectId` in app.json and links the local repo to your
+# Expo dashboard. Commit the resulting app.json change.
+cd apps/mobile
+npx eas-cli init
+
+# Sign in to Expo if you haven't.
+npx eas-cli login
+
+# Build a development client (custom dev-client APK + iOS simulator
+# bundle). First iOS build prompts for Apple ID — free signing works
+# for development distribution.
+npx eas-cli build --platform all --profile development
 ```
 
-## Notes
+When the builds finish, EAS gives you a QR code / install link. Install
+the dev client on your device, then start the Metro server from the repo
+root:
 
-- Uses Expo Router (file-based). Screens live under `app/`.
+```bash
-- Secrets stored via `expo-secure-store` (Keychain / Keystore).
+pnpm mobile:dev    # = pnpm --filter @chat-app/mobile dev = expo start --dev-client
-- Local encrypted history via `expo-sqlite`.
+```
-- Crypto via `react-native-libsodium`.
+
-- Shared business logic lives in `@chat-app/shared`.
+Open the dev client on the device, scan the QR code, and Netralax's
+Landing screen should render.
+
+## Day-to-day
+
+```bash
+pnpm mobile:dev          # Metro server
+pnpm mobile:ios          # native iOS run (local Xcode)
+pnpm mobile:android      # native Android run (local Android Studio)
+pnpm mobile:typecheck    # tsc --noEmit
+```
+
+## Architecture notes
+
+- Expo Router (file-based) — screens live under `app/`.
+- `expo-secure-store` — Keychain / Keystore-backed secret store (used by
+  the mobile `SecretStore` adapter in Phase 1).
+- `expo-sqlite` — local encrypted history (Phase 1).
+- `react-native-libsodium` — crypto primitives (Phase 1's
+  `CryptoBackend` adapter wraps this).
+- `@chat-app/shared` — business logic shared with the desktop, including
+  the `CryptoBackend` and `SecretStore` interfaces the mobile adapters
+  plug into.
+- `lib/sharedSmoke.ts` exists only to prove Metro can resolve the
+  workspace package; it's deleted in Phase 1.
+
+## Roadmap
+
+See `docs/superpowers/specs/2026-05-13-mobile-deployment-roadmap.md`.