docEntry.append("URL: ").append(sanitizeDocumentContent(url)).append("\n");
            }
            if (content != null) {
                docEntry.append("Content:\n").append(sanitizeDocumentContent(stripHtmlTags(content))).append("\n\n");
            }

            if (totalChars + docEntry.length() > maxChars) {
                final int remaining = maxChars - totalChars - CONTEXT_TRUNCATION_BUFFER;

        assertTrue(systemMsg.contains("URL: http://example.com/doc"));
        assertTrue(systemMsg.contains("Short content"));
        assertFalse(systemMsg.contains("..."));
    }

    // ========== stripHtmlTags tests ==========

    @Test
    public void test_stripHtmlTags_removesAllTags() {
        assertEquals("Hello world", client.testStripHtmlTags("<p>Hello <b>world</b></p>"));
    }

    @Test