feat: add native Qt support and dcr lint command; refactor architecture and integration tests

tests/cli_workspace.rs

@@ -0,0 +1,58 @@
+mod common;
+use common::*;
+
+#[test]
+fn workspace_build_and_clean_all() {
+    let Some(compiler) = available_compiler() else {
+        eprintln!("no compiler found; skipping workspace test");
+        return;
+    };
+
+    let root = unique_sandbox_dir("workspace");
+    let out = run_dcr(&["init"], &root);
+    assert!(out.status.success(), "root init should succeed");
+
+    let members = [
+        ("userspace", &[][..]),
+        ("core", &["userspace"][..]),
+        ("kernel", &["core"][..]),
+    ];
+    for (name, _) in &members {
+        let member_dir = root.join("src").join(name);
+        std::fs::create_dir_all(&member_dir).expect("failed to create member dir");
+        let out = run_dcr(&["init"], &member_dir);
+        assert!(out.status.success(), "member init should succeed");
+    }
+
+    let workspace_toml = "[package]\nname = \"ws-root\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = \"c\"\nstandard = \"c11\"\ncompiler = \"clang\"\nkind = \"bin\"\n\n[workspace]\nuserspace = { path = \"src/userspace\", deps = [] }\ncore = { path = \"src/core\", deps = [\"userspace\"] }\nkernel = { path = \"src/kernel\", deps = [\"core\"] }\n\n[dependencies]\n";
+    std::fs::write(root.join("dcr.toml"), workspace_toml).expect("failed to write root dcr.toml");
+
+    let envs = [("DCR_COMPILER", compiler)];
+    let out = run_dcr_env(&["build"], &root, &envs);
+    assert!(out.status.success(), "workspace build should succeed");
+
+    let out = run_dcr_env(&["build"], &root, &envs);
+    assert!(out.status.success(), "workspace build should succeed");
+
+    let out = run_dcr_env(&["build", "--release"], &root, &envs);
+    assert!(
+        out.status.success(),
+        "workspace build --release should succeed"
+    );
+
+    let out = run_dcr_env(&["clean", "--release", "--all"], &root, &envs);
+    assert!(
+        out.status.success(),
+        "workspace clean --all --release should succeed"
+    );
+
+    let target_dir = "target/x86_64-unknown-linux-gnu";
+    assert!(
+        !root.join(target_dir).join("release").exists(),
+        "root target/x86_64-unknown-linux-gnu/release should be removed"
+    );
+    assert!(
+        root.join(target_dir).join("debug").exists(),
+        "root target/x86_64-unknown-linux-gnu/debug should remain"
+    );
+}