fix(telegram): render full clarify choice text in message body, use short button labels

When Telegram clarify prompts offer long choices, mobile clients
truncate the inline button labels, making options unreadable.
Previously only the question was shown in the message body with
truncated choice text in button labels.

Fix: append the full numbered option list to the message body
so users can read complete choice text on any client.  Buttons
now use short numeric labels (1, 2, ...) to avoid Telegram
truncation.  The 'Other (type answer)' button is unchanged.

Long choice labels are now rendered in full (not truncated to
57 chars + '...') since they appear in the body instead of
button labels.

Closes: #27497

gateway/platforms/telegram.py

@@ -2262,6 +2262,17 @@ class TelegramAdapter(BasePlatformAdapter):
             text = f"❓ {_html.escape(question)}"
             thread_id = self._metadata_thread_id(metadata)
 
+            if choices:
+                # Render full option text in the message body so mobile
+                # users can read long choices that would be truncated in
+                # inline button labels.  Buttons keep short numeric labels
+                # (1, 2, …, Other) to avoid Telegram truncation.
+                option_lines = "\n".join(
+                    f"{i + 1}. {_html.escape(str(c))}"
+                    for i, c in enumerate(choices)
+                )
+                text += f"\n\n{option_lines}"
+
             kwargs: Dict[str, Any] = {
                 "chat_id": int(chat_id),
                 "text": text,
@@ -2271,15 +2282,12 @@ class TelegramAdapter(BasePlatformAdapter):
 
             if choices:
                 # Telegram caps callback_data at 64 bytes; keep "cl:<id>:<idx>"
-                # short.  Button label is also capped (~64 chars in practice).
+                # short.
                 rows = []
-                for idx, choice in enumerate(choices):
-                    label = str(choice)
-                    if len(label) > 60:
-                        label = label[:57] + "..."
+                for idx in range(len(choices)):
                     rows.append([
                         InlineKeyboardButton(
-                            f"{idx + 1}. {label}",
+                            str(idx + 1),
                             callback_data=f"cl:{clarify_id}:{idx}",
                         )
                     ])