feat(core): klien Docker SDK + tia-love doctor (docker/audio/go/stacks) + e2e doctor

e2e/e2e_test.go

@@ -191,6 +191,23 @@ func TestReducedMotionToggle(t *testing.T) {
 	}
 }
 
+func TestDoctorCommand(t *testing.T) {
+	out, err := exec.Command(binPath, "doctor").CombinedOutput()
+	code := 0
+	if ee, ok := err.(*exec.ExitError); ok {
+		code = ee.ExitCode()
+	}
+	if code != 0 && code != 1 {
+		t.Fatalf("exit code %d, mau 0/1.\n%s", code, out)
+	}
+	s := string(out)
+	for _, want := range []string{"docker", "audio", "go", "stacks"} {
+		if !strings.Contains(s, want) {
+			t.Fatalf("output doctor tidak memuat %q:\n%s", want, s)
+		}
+	}
+}
+
 func TestMouseAndNavigateKeys(t *testing.T) {
 	u := startTUI(t)
 	u.waitContains("belum ada klik", 5*time.Second)