Prepare Qwen3.8 artifact set

Cargo.toml

@@ -3,6 +3,7 @@ name = "ds4-server"
 version = "0.1.0"
 edition = "2024"
 rust-version = "1.97"
+default-run = "ds4-server"
 description = "A native macOS coding-agent GUI for DwarfStar"
 license = "MIT"
 publish = false
@@ -49,3 +50,7 @@ resources = ["metal", "assets/dev-brain"]
 
 [package.metadata.packager.macos]
 minimum-system-version = "15.0"
+
+[[bin]]
+name = "qwen38-artifacts"
+path = "tools/qwen38-artifacts.rs"