v0.2.0

Prebuilt binaries for this release. Unpack and run:

• gateway-server — the headless gateway
• llm-gateway-desktop — the desktop window (Windows and Linux)

The binaries are unsigned. On macOS only the headless server is shipped;
the desktop shell has to be built from source for now.

Full Changelog: v0.1.0...v0.2.0