Chat bubbles: preserve single newlines in agent messages too — the hard-break rule from user bubbles now applies to agent replies as well, so status lines and model-wrapped text render one line per field instead of collapsing into a wall of text; unit tests for preserveNewlinesAsHardBreaks

app/shared/src/commonTest/kotlin/iris/util/MarkdownTest.kt

@@ -39,4 +39,26 @@ class MarkdownTest {
     fun allBlankBecomesEmpty() {
         assertEquals("", "\n\n   \n".prepareForMarkdown())
     }
+
+    @Test
+    fun convertsSingleNewlinesToHardBreaks() {
+        assertEquals("a  \nb  ", "a\nb".preserveNewlinesAsHardBreaks())
+    }
+
+    @Test
+    fun keepsBlankLinesAsParagraphBreaks() {
+        assertEquals("a  \n\nb  ", "a\n\nb".preserveNewlinesAsHardBreaks())
+    }
+
+    @Test
+    fun leavesFencedCodeBlocksUntouched() {
+        val md = "```kotlin\nval a = 1\nval b = 2\n```"
+        assertEquals(md, md.preserveNewlinesAsHardBreaks())
+    }
+
+    @Test
+    fun statusStyleLinesBecomeHardBreaks() {
+        val md = "**Title:** x\n**Model:** y"
+        assertEquals("**Title:** x  \n**Model:** y  ", md.preserveNewlinesAsHardBreaks())
+    }
 }