byGalax
8baac2fd1e
Equal-grid cells no longer set aspect-video — on wide chat panels this forced cell height = width × 9/16 (~400px on a 700px panel) which pushed the row past the section's max-h and ate the controls bar below. n>=2 cells now fill grid tracks normally via auto-rows-fr; the solo case (n=1) keeps a 16:9 silhouette via aspect-video + max-w + justify-self- center so a single-user-alone-calling view doesn't stretch into a full-width slab. Same change applied to the fullscreen-grid path plus +16px bottom-padding (pb-28) so audio-only avatars' name chip clears the floating controls bar. Docked stage strip thumbs (focus + bento) switch from aspect-video shrink-0 to flex-1 min-w-[200px] max-w-[460px] so 2-3 thumbs share the row width evenly under the share above, instead of clinging to the left edge with dead space to the right. Fullscreen-cinema strip keeps the small aspect-video thumbs the user explicitly approved. ScreenShareViewer gains a hideFullscreenToggle prop; cinema mode passes it via a new `cinema` prop on TileRender so the in-share fullscreen icon doesn't visually collide with FullscreenCall's strip-hidden toggle at the same top-right corner. docs/superpowers/specs + plans for the Discord-style tile handling workstream are committed alongside the implementation that completed it. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
chat-app
Private, end-to-end encrypted chat app for a small circle. Self-hosted Supabase backend, clients on iOS, Android, macOS, Windows, and Linux.
Server is zero-knowledge: it only stores ciphertexts and metadata needed to route them.
Milestone Roadmap
- Milestone 1 — Text Chat (current): auth, identity keys, 1:1 encrypted messaging, local history, push.
- Milestone 2 — Voice Calls: libsodium-secured WebRTC signaling via Supabase Realtime.
- Milestone 3 — Video Calls: same stack, add video tracks + bandwidth handling.
- Milestone 4 — Desktop Polish: feature parity with mobile, tray, notifications.
- Milestone 5 — Groups & Channels: Discord-like group channels with shared ratchet keys.
Repository Layout
apps/
mobile/ Expo + React Native (iOS / Android)
desktop/ Tauri v2 + React + Vite + Tailwind (macOS / Windows / Linux)
packages/
shared/ Business logic: Supabase client, libsodium crypto, auth, chat
db-types/ Generated Supabase database types
ui-web/ React web components shared by desktop (not by React Native)
infra/
supabase/ Self-hosting docs, client env, SQL migrations
.github/workflows/ CI + build placeholders
Tech Stack
- Mobile: Expo SDK 52, Expo Router, expo-secure-store, expo-sqlite, expo-notifications, react-native-libsodium.
- Desktop: Tauri v2, React 18, Vite, Tailwind, tauri-plugin-stronghold, tauri-plugin-sql, tauri-plugin-notification, Zustand.
- Backend: Supabase self-hosted (Postgres + GoTrue + PostgREST + Realtime + Storage + Edge Functions) on Hetzner, Caddy reverse proxy.
- Crypto: X25519 identity keys, XChaCha20-Poly1305 envelopes (libsodium / NaCl).
- Auth: email magic-link, invite-only.
Prerequisites
- Node 22+ (see
.nvmrc) - pnpm 9+
- Rust + Cargo (Tauri): https://rustup.rs
- Docker + Docker Compose (for running Supabase locally or on the VPS)
- Platform toolchain per target:
- iOS: Xcode
- Android: Android Studio + SDK
- macOS/Linux/Windows Tauri: see
apps/desktop/README.md
Setup
# 1. Node + pnpm (macOS)
brew install pnpm
corepack enable
# 2. Clone + install
git clone <this repo>
cd chat-app
pnpm install
# 3. Env
cp infra/supabase/.env.example apps/mobile/.env
cp infra/supabase/.env.example apps/desktop/.env
# Fill in SUPABASE_URL and SUPABASE_ANON_KEY from your self-hosted stack.
See infra/supabase/README.md for spinning up the backend.
Common Scripts (run from repo root)
| Script | Purpose |
|---|---|
pnpm dev |
Start every workspace's dev task (Turborepo). |
pnpm build |
Build every workspace. |
pnpm lint |
ESLint across workspaces. |
pnpm typecheck |
TypeScript project-wide type check. |
pnpm test |
Vitest across workspaces. |
pnpm format |
Prettier write. |
pnpm format:check |
Prettier check. |
pnpm mobile:dev |
expo start for the mobile app. |
pnpm mobile:ios |
Native iOS run. |
pnpm mobile:android |
Native Android run. |
pnpm desktop:dev |
tauri dev for the desktop app. |
pnpm desktop:build |
Platform-specific Tauri bundle. |
pnpm db:types |
Regenerate @chat-app/db-types from the running Supabase. |
Architecture Overview
- Shared-first: Anything that can run in both React Native and the Tauri WebView lives in
packages/sharedand is imported via@chat-app/shared/*. Both hosts pass in adapters for platform-only concerns (secure storage, SQLite, libsodium backend). - Zero-knowledge server: Messages are encrypted client-side before insert. The server sees ciphertexts, a conversation id, a sender id, and a timestamp — nothing else.
- Key custody: X25519 private keys live in platform secure stores only (Keychain/Keystore on mobile, Stronghold on desktop). Public keys live in the
profilestable. - Realtime: Supabase Realtime delivers new ciphertext rows to subscribed clients. Push notifications are silent (data-only) — the client decrypts and composes the visible notification locally.
Security Checklist
- RLS enabled on every user-facing table
- Invite-only enforced in SQL (invites table + policy)
- No plaintext in push payloads
- Service role key never shipped to a client
- JWT secret rotated on first boot
- TLS via Caddy at the edge