Three home-screen issues from the first Tauri Android APK:
1. Alias was empty (no seed-derived name).
Port the adjective+noun word lists from the old Kotlin SettingsRepository
into a `derive_alias()` helper that maps the first 4 bytes of the seed to
indices in those lists. Same seed → same alias forever, different seeds →
effectively random aliases — so reinstalls keep the user's identity AND
the friendly name they're used to.
2. Build identity was invisible — couldn't tell which APK was actually
installed (this caused us a lot of grief on the Kotlin app).
build.rs now captures `git rev-parse --short HEAD` and emits it as
`WZP_GIT_HASH`, exposed via a new `get_app_info` command. The frontend
stamps `build <hash> • <alias>` under the fingerprint on the home screen.
3. Register on relay failed with `Permission denied (os error 13)`.
Root cause: I hardcoded `/data/data/com.wzp.phone/files/.wzp` as the
identity dir, but the Tauri Android package id is `com.wzp.desktop` —
so the app was trying to write into another app's data directory and
getting EACCES at the filesystem layer. Fix: resolve the data dir from
Tauri's `path().app_data_dir()` API in the `setup()` callback and stash
it in a `OnceLock<PathBuf>`. Works on Android, macOS, Linux, Windows
without any cfg gymnastics.
Also: `get_app_info` returns the resolved `data_dir` so we can debug
storage issues from the UI (it's set as the build-hash element's title).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- New desktop/ directory with Tauri v2 + Vite + TypeScript
- Rust backend: CallEngine wrapping wzp-client audio + transport
- Web frontend: connect screen, in-call screen with participants,
mic/speaker mute, keyboard shortcuts (m/s/q)
- Dark theme UI, settings persistence via localStorage
- Platform-aware --os-aec: warns on Windows/Linux (not yet implemented)
- Workspace updated to include desktop/src-tauri
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
