🎨 优化扩展模块，完成ai接入和对话功能

data/st-core-scripts/scripts/extensions/assets/character.html

@@ -0,0 +1,9 @@
+<div class="characterAsset">
+    <div class="characterAssetName">{{name}}</div>
+    <img class="characterAssetImage" alt="{{name}}" src="{{url}}" />
+    <div class="characterAssetDescription" title="{{description}}">{{description}}</div>
+    <div class="characterAssetButtons flex-container">
+        <div class="characterAssetDownloadButton right_menu_button fa-fw fa-solid fa-download" title="Download"></div>
+        <div class="characterAssetCheckMark right_menu_button fa-fw fa-solid fa-check" title="Installed"></div>
+    </div>
+</div>