Add conflict resolution diff UI and app branding

apps/server/internal/httpserver/service_worker_test.go

@@ -0,0 +1,29 @@
+package httpserver
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestHandleServiceWorkerServesJavaScript(t *testing.T) {
+	server := &Server{}
+	req := httptest.NewRequest(http.MethodGet, "/sw.js", nil)
+	recorder := httptest.NewRecorder()
+
+	server.handleServiceWorker(recorder, req)
+
+	response := recorder.Result()
+	if response.StatusCode != http.StatusOK {
+		t.Fatalf("status = %d, want %d", response.StatusCode, http.StatusOK)
+	}
+	if got := response.Header.Get("Content-Type"); got != "application/javascript; charset=utf-8" {
+		t.Fatalf("Content-Type = %q, want application/javascript; charset=utf-8", got)
+	}
+	if got := response.Header.Get("Service-Worker-Allowed"); got != "/" {
+		t.Fatalf("Service-Worker-Allowed = %q, want /", got)
+	}
+	if recorder.Body.Len() == 0 {
+		t.Fatal("expected non-empty service worker body")
+	}
+}