DS4Server is a native macOS coding-agent application for the DwarfStar (ds4) inference engine. It uses Rust and Iced and will combine local model loading, an OpenAI-compatible localhost endpoint, and project-scoped agent chat in one app.

The current milestone provides a Codex-inspired project/session layout. A native macOS folder picker selects each workspace, then the app asks for its display name. Projects, sessions, and model preferences are persisted through Diesel in SQLite. Open Preferences with Command-, to select the model, toggle DSpark, configure the model idle timeout, and download the selected main GGUF with its optional DSpark support. Rust-native background downloads show live byte progress, speed, and ETA in Preferences and the app status bar. Stopping or quitting keeps the partial file; the next Download/Resume action continues from that exact byte after relaunch. Exact size and SHA-256 verification happen before an artifact becomes usable.

cargo install cargo-packager --locked --version 0.11.8
make bundle
open target/release/DS4Server.app

State is stored at:

~/Library/Application Support/DS4Server.rfc1437.de/data.sqlite3

Deleting a project or session removes only DS4Server metadata. It never deletes the referenced project directory. See PLAN.md for the implementation roadmap.