Add no-GUI boot mode and quieter boot diagnostics

audit/internal/webui/server_test.go

@@ -604,6 +604,25 @@ func TestReadyIsOKWhenAuditPathIsUnset(t *testing.T) {
 	}
 }
 
+func TestLoadingPageHasFallbackAutoOpen(t *testing.T) {
+	handler := NewHandler(HandlerOptions{})
+	rec := httptest.NewRecorder()
+	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/loading", nil))
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
+	}
+	body := rec.Body.String()
+	for _, needle := range []string{
+		`var AUTO_OPEN_DELAY_MS = 15000;`,
+		`function scheduleFallbackOpen(){`,
+		`Startup checks are taking too long — opening app...`,
+	} {
+		if !strings.Contains(body, needle) {
+			t.Fatalf("loading page missing %q: %s", needle, body)
+		}
+	}
+}
+
 func TestAuditPageRendersViewerFrameAndActions(t *testing.T) {
 	dir := t.TempDir()
 	path := filepath.Join(dir, "audit.json")