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src/api/openapi.js

@@ -1119,7 +1119,7 @@
  *           description: Id of the conversation that started this one as a subagent, or null for a top-level conversation. Deleting a conversation also deletes every conversation below it in this chain.
  *         first_message:
  *           type: [string, 'null']
- *           description: Only returned by the list endpoint. Plain text of the conversation's first user message (max 200 chars, ellipsis if cut), or null if there is none yet.
+ *           description: Plain text of the conversation's first user message (XML stripped, max 100 chars, ellipsis if cut), or null if there is none yet.
  *     ModelConversationCreateInput:
  *       type: object
  *       required: [provider, model]

src/api/routes/modelconversation.js

@@ -4,7 +4,7 @@ import { RETIRED_MODELS, resolveDefaultModel } from '../../tools/llm-key.js';
 import { emit } from '../sse.js';
 import { getOrCreateManager, removeManager, cleanUserMessageContent } from '../../services/conversationManager.js';
 
-const FIRST_MESSAGE_MAX_CHARS = 200;
+const FIRST_MESSAGE_MAX_CHARS = 100;
 
 // #region Helpers
 
@@ -24,9 +24,26 @@ function parsePositiveInt(value, field) {
     return { id };
 }
 
+/**
+ * Removes XML elements together with their content (e.g. `<USERENV><ROUTE>…</ROUTE></USERENV>`)
+ * and any leftover self-closing tags.
+ * @param {string} text
+ * @returns {string}
+ */
+function stripXmlElements(text) {
+    const elementPattern = /<([A-Za-z][\w:.-]*)(?:\s[^>]*)?>[\s\S]*?<\/\1\s*>/g;
+    let previous;
+    let stripped = text;
+    do {
+        previous = stripped;
+        stripped = stripped.replace(elementPattern, '');
+    } while (stripped !== previous);
+    return stripped.replace(/<[A-Za-z][\w:.-]*(?:\s[^>]*)?\/>/g, '');
+}
+
 /**
  * Turns the stored first user message payload (`{"content": ...}`) into short plain text
- * for conversation lists.
+ * for conversation lists: JSON content only, XML elements stripped, outer whitespace trimmed.
  * @param {string|null} storedMessage
  * @returns {string|null}
  */
@@ -38,10 +55,19 @@ function buildFirstMessagePreview(storedMessage) {
     } catch {
         rawContent = storedMessage;
     }
-    const text = cleanUserMessageContent(rawContent).trim();
+    const text = stripXmlElements(cleanUserMessageContent(rawContent)).trim();
     return text.length > FIRST_MESSAGE_MAX_CHARS ? `${text.slice(0, FIRST_MESSAGE_MAX_CHARS)}…` : text;
 }
 
+/**
+ * Replaces the store's raw `first_user_message` with the plain-text `first_message` preview.
+ * @param {{ first_user_message: string|null }} row
+ * @returns {object}
+ */
+function buildConversationResponse({ first_user_message: storedFirstMessage, ...conversation }) {
+    return { ...conversation, first_message: buildFirstMessagePreview(storedFirstMessage) };
+}
+
 function modelConversationErrorStatus(error) {
     if (error.message === 'No company selected') return 400;
     if (error.message === 'Not authorized') return 403;
@@ -113,10 +139,7 @@ export function register(app, basePath = '') {
 
         try {
             const rows = await db.list(req.user.id);
-            const conversations = rows.map(({ first_user_message: storedFirstMessage, ...conversation }) => ({
-                ...conversation,
-                first_message: buildFirstMessagePreview(storedFirstMessage),
-            }));
+            const conversations = rows.map(buildConversationResponse);
             res.status(200).json({ conversations });
         } catch (error) {
             const status = modelConversationErrorStatus(error);
@@ -269,7 +292,7 @@ export function register(app, basePath = '') {
         }
 
         try {
-            const conversation = await db.get(req.user.id, parsedId.id);
+            const conversation = buildConversationResponse(await db.get(req.user.id, parsedId.id));
             res.status(200).json({ conversation });
         } catch (error) {
             const status = modelConversationErrorStatus(error);