Initial commit: ReTeamSpeak cross-platform TeamSpeak client

- tscore: Protocol implementation (packets, crypto, connection handshake)
- tsaudio: Audio engine (capture, playback, codec, VAD, jitter buffer)
- tsdb: SQLite database (identities, bookmarks, messages, settings)
- shared: Core types and events
- tauri-app: Tauri v2 desktop application with React frontend
- docs: SRS, SAD, SDD documentation
- CI/CD: GitHub Actions workflow
- 32 unit tests passing

README.md

@@ -0,0 +1,84 @@
+# ReTeamSpeak
+
+Cross-platform TeamSpeak 3 client supporting Windows, macOS, Linux, iOS, and Android.
+
+## Features
+
+- TeamSpeak 3 protocol implementation (UDP, AES-128-EAX encryption)
+- Voice communication with Opus codec
+- Text messaging (server, channel, private)
+- Channel and client management
+- Identity and bookmark management
+- Cross-platform UI (Tauri v2 + React)
+
+## Architecture
+
+```
+src/
+├── shared/          # Shared types (~700 lines)
+├── tscore/          # Protocol core (~1800 lines)
+│   ├── protocol/    # Packet parsing, commands
+│   ├── crypto/      # AES-EAX, ECDH, SHA
+│   └── connection/  # Handshake, state machine, resend
+├── tsaudio/         # Audio engine (~280 lines)
+├── tsdb/            # Database layer (~400 lines)
+└── tauri-app/       # Application shell
+    ├── src-tauri/   # Rust backend
+    └── frontend/    # React frontend
+```
+
+## Build
+
+### Prerequisites
+
+- Rust 1.70+
+- Node.js 20+
+- System dependencies (see below)
+
+### Linux
+```bash
+sudo apt install libdbus-1-dev pkg-config libgtk-3-dev \
+  libwebkit2gtk-4.1-dev libayatana-appindicator3-dev \
+  librsvg2-dev libssl-dev libasound2-dev
+```
+
+### Build Commands
+```bash
+# Build core libraries
+cargo build -p shared -p tscore -p tsaudio -p tsdb
+
+# Run tests
+cargo test -p shared -p tscore -p tsaudio -p tsdb
+
+# Build frontend
+cd src/tauri-app/frontend && npm install && npm run build
+
+# Build desktop app
+cd src && cargo build --release
+```
+
+### Using Podman (no root)
+```bash
+podman run --rm -v $(pwd):/workspace:Z -w /workspace/src \
+  docker.io/library/debian:trixie bash -c "
+    apt-get update -qq &&
+    apt-get install -y -qq curl pkg-config libdbus-1-dev libgtk-3-dev \
+      libwebkit2gtk-4.1-dev libayatana-appindicator3-dev librsvg2-dev \
+      libssl-dev libasound2-dev build-essential &&
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y &&
+    source \$HOME/.cargo/env &&
+    cargo test -p shared -p tscore -p tsaudio -p tsdb
+  "
+```
+
+## Documentation
+
+- [SRS](docs/SRS.md) - Software Requirements Specification
+- [SAD](docs/SAD.md) - Software Architecture Document
+- [SDD](docs/SDD.md) - Software Design Document
+- [Protocol](docs/protocol.md) - TS3 Protocol Analysis
+- [Protocol Stack](docs/protocol_stack.md) - Protocol Stack Details
+
+## License
+
+MIT OR Apache-2.0