fix: pass selectedCommThreadId to refreshSelectedClientTimeline

The function was called without arguments in two places, causing
contactId to be empty string and clearing clientTimelineItems to [].
Messages disappeared from the chat panel as a result.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/app/components/workspace/CrmWorkspaceApp.vue

@@ -311,7 +311,7 @@ async function refetchAllCrmQueries() {
     refetchChatMessages(),
     refetchChatConversations(),
   ]);
-  await refreshSelectedClientTimeline();
+  await refreshSelectedClientTimeline(selectedCommThreadId.value);
 }
 
 // ---------------------------------------------------------------------------
@@ -1177,7 +1177,7 @@ watch(selectedCommThreadId, () => {
     clientTimelineItems.value = [];
     return;
   }
-  void refreshSelectedClientTimeline().catch(() => undefined);
+  void refreshSelectedClientTimeline(selectedCommThreadId.value).catch(() => undefined);
 });
 
 // Watch: URL sync