docs: add linux dependencies and wsl2 audio setup to readme

readme.md

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+# TeamSpeak TUI Client
+
+A modern, fast, and lightweight TeamSpeak 3 client built in Go with a beautiful Terminal User Interface (TUI).
+
+## 🚀 Features
+- **Low Latency Audio**: Optimized for both Windows (WASAPI) and Linux (PortAudio).
+- **Responsive UI**: Built with Bubble Tea for a smooth terminal experience.
+- **Cross-Platform**: Full support for Windows and Linux (including WSL2).
+- **Audio Controls**: Per-user volume and mute indicators.
+
+## 🛠️ Linux Dependencies
+
+To build the project on Linux (including Ubuntu/WSL2), you need to install the following system libraries:
+
+```bash
+sudo apt-get update
+sudo apt-get install -y \
+    libportaudio2 \
+    portaudio19-dev \
+    libopus-dev \
+    libpulse-dev
+```
+
+### 🔊 WSL2 Audio Setup
+
+WSL2 does not have direct access to your Windows audio hardware. To enable audio, we recommend using a PulseAudio network bridge:
+
+1. **Install PulseAudio on Windows** (e.g., via [portable binaries](https://www.freedesktop.org/wiki/Software/PulseAudio/Ports/Windows/)).
+2. **Enable TCP**: Edit `default.pa` in PulseAudio and add:
+   `load-module module-native-protocol-tcp auth-anonymous=1 listen=0.0.0.0`
+3. **Environment Variable**: Set the `PULSE_SERVER` in your WSL2 shell:
+   ```bash
+   export PULSE_SERVER=tcp:$(grep nameserver /etc/resolv.conf | awk '{print $2}'):4713
+   ```
+
+## 🏗️ Building
+
+```bash
+# General build
+go build -o ts-tui ./cmd/tui
+
+# Run with debug logging (highly recommended for audio setup)
+go run ./cmd/tui --server your-ip:9987 --debug
+```
+
+## ⌨️ Common Keys
+- `q`: Quit cleanly.
+- `Arrows / hjkl`: Navigate channels and users.
+- `Enter`: Join channel.
+- `1`: Poke user (in User View).
+- `m`: Mute/Unmute audio.