fix: compact user chat bubble + move citations into expandable

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

pages/chat.py

@@ -21,16 +21,10 @@ def format_chatbot_messages(state: UserData) -> list[dict]:
     for msg in nb.messages:
         content = msg.content
         if msg.role == "assistant" and msg.citations:
-            # Add citation chips
             chips = ""
             for c in msg.citations:
                 chips += f'<span class="citation-chip">📄 {c["source"]} · p.{c["page"]}</span>'
-            content += f"\n\n{chips}"
-            # Add expandable passages
-            passages = ""
-            for c in msg.citations:
-                passages += f'> *"{c["text"]}"*\n>\n> — **{c["source"]}**, page {c["page"]}\n\n'
-            content += f"\n\n<details><summary>View cited passages</summary>\n\n{passages}</details>"
+            content += f"\n\n<details><summary>View cited passages</summary>\n\n{chips}\n\n</details>"
         formatted.append({"role": msg.role, "content": content})
     return formatted
 

theme.py

@@ -188,6 +188,8 @@ CUSTOM_CSS = """
     color: white !important;
     border: none !important;
     box-shadow: 0 4px 14px rgba(102,126,234,0.25);
+    max-width: fit-content !important;
+    margin-left: auto !important;
 }
 /* Assistant bubble */
 #chatbot .message.bot {