} catch (Exception e) {
            // Expected
        }
        long duration = System.currentTimeMillis() - startTime;

        // Test should complete in under 1 second (much less than the original 25+ seconds)
        assertTrue("Test should complete quickly (duration: " + duration + "ms)", duration < 1000);
    }

    // Fast mock implementations to minimize overhead

img-retina($file-1x, $file-2x, $width-1x, $height-1x) {\n  background-image: url($file-1x);\n\n  // Autoprefixer takes care of adding -webkit-min-device-pixel-ratio and -o-min-device-pixel-ratio,\n  // but doesn't convert dppx=>dpi.\n  // There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard.\n  // Compatibility info: https://caniuse.com/css-media-resolution\n  @media only screen and (min-resolution: 192dpi), // IE9-11 don't support dppx\n    only screen and (min-resolution:...

        final String result = chatClient.testBuildAssistantHistoryContent(msg, "smart_summary", 500, 500);
        // Result should not exceed summaryMaxChars by much (suffix may push slightly, but the body is budgeted)
        assertTrue(result.length() <= 500 + 50, "result length " + result.length() + " exceeds reasonable bound");
    }

    @Test

      "german_stop": {
        "type":       "stop",
        "stopwords":  "_german_"
      },
      "german_keywords": {
        "type":       "keyword_marker",
        "keywords": ["Hallo", "Welt", "Suche"]
      },
      "german_stemmer": {
        "type":       "stemmer",
        "language":   "light_german"
      },
      "greek_stop": {
        "type":       "stop",

      "german_stop": {
        "type":       "stop",
        "stopwords":  "_german_"
      },
      "german_keywords": {
        "type":       "keyword_marker",
        "keywords": ["Hallo", "Welt", "Suche"]
      },
      "german_stemmer": {
        "type":       "stemmer",
        "language":   "light_german"
      },
      "greek_stop": {
        "type":       "stop",