Add persistent conversations and update checks

duck_core/web/templates/index.html

@@ -25,6 +25,14 @@
           <a href="/experience">Experience</a>
         </nav>
 
+        <section class="conversation-panel" aria-labelledby="conversations-title">
+          <div class="panel-heading">
+            <h2 id="conversations-title">Chats</h2>
+            <button id="new-chat" type="button" title="New chat">+</button>
+          </div>
+          <div id="conversation-list" class="conversation-list"></div>
+        </section>
+
         <section class="settings-panel" aria-labelledby="settings-title">
           <h2 id="settings-title">Session</h2>
           <label>
@@ -59,10 +67,10 @@
       <main class="chat-shell">
         <header class="chat-header">
           <div>
-            <h2>Chat</h2>
-            <p>Messages are processed by the local Qwen role mapping through Duck Core.</p>
+            <h2 id="chat-title">Chat</h2>
+            <p id="chat-subtitle">Messages are processed by the local Qwen role mapping through Duck Core.</p>
           </div>
-          <button id="new-chat" class="secondary-button" type="button">New Chat</button>
+          <button id="reload-chat" class="secondary-button" type="button">Reload</button>
         </header>
 
         <section id="messages" class="messages" aria-live="polite">