diff --git a/gui/chatblockmodel.cpp b/gui/chatblockmodel.cpp
index b71eb67..9d70f47 100644
--- a/gui/chatblockmodel.cpp
+++ b/gui/chatblockmodel.cpp
@@ -193,18 +193,35 @@ QString ChatBlockModel::highlightCode(const QString &code, const QString &langua
 
 QString ChatBlockModel::renderMarkdown(const QString &markdown) const
 {
+    // Pre-process: render <system-user-interruption> blocks as styled boxes.
+    static const QRegularExpression interruptionRe(
+        R"(<system-user-interruption>\n([\s\S]*?)\n</system-user-interruption>)");
+    QString processed = markdown;
+    processed.replace(interruptionRe, [](const QString &match) -> QString {
+        // Extract content between the tags (after opening "<system-user-interruption>\n"
+        // and before trailing "\n</system-user-interruption>").
+        const int start = QStringLiteral("<system-user-interruption>\n").size();
+        const int end = match.size() - QStringLiteral("\n</system-user-interruption>").size();
+        const QString content = match.mid(start, end - start).toHtmlEscaped();
+        return QStringLiteral(
+            "<div style=\"background:#fff8e1;border:1px solid #ffca28;"
+            "border-radius:4px;padding:8px;margin:8px 0;white-space:pre-wrap;\">"
+            "\u26A0\uFE0F <strong>User interruption</strong>\n") + content +
+            QStringLiteral("</div>");
+    });
+
     static const QRegularExpression fenceRe(
         R"(```([A-Za-z0-9_+.-]*)[^\n]*\n([\s\S]*?)\n```(\n|$))");
 
     QString result;
     int cursor = 0;
-    auto it = fenceRe.globalMatch(markdown);
+    auto it = fenceRe.globalMatch(processed);
     while (it.hasNext()) {
         const auto match = it.next();
         // Prose before this fence: HTML-escape and wrap in pre-wrap div to
         // preserve newlines and whitespace. QTextDocument::setMarkdown would
         // collapse single newlines (standard Markdown behavior).
-        const QString prose = markdown.mid(cursor, match.capturedStart() - cursor);
+        const QString prose = processed.mid(cursor, match.capturedStart() - cursor);
         if (!prose.isEmpty())
             result += QStringLiteral("<div style=\"white-space:pre-wrap\">")
                 + prose.toHtmlEscaped() + QStringLiteral("</div>");
@@ -218,7 +235,7 @@ QString ChatBlockModel::renderMarkdown(const QString &markdown) const
     static const QRegularExpression openFenceRe(
         R"(^```([A-Za-z0-9_+.-]*)[^\n]*\n([\s\S]*)$)",
         QRegularExpression::MultilineOption);
-    const auto tail = markdown.mid(cursor);
+    const auto tail = processed.mid(cursor);
     if (!tail.isEmpty()) {
         const auto open = openFenceRe.match(tail);
         if (open.hasMatch()) {