Default lucide icons to 16px

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/data/app-data.ts

@@ -632,4 +632,6 @@ export const AppData = {
      */
     CompressCacheMaxFiles: 600,
     CompressCacheMaxBytes: 32 * 1024 * 1024,
+
+    DefaultIconSize: 16,
 } as const;

src/styles/main.css

@@ -394,3 +394,7 @@ footer .twui-anchor.active {
 .conversation-user-bubble a {
     @apply text-blue-400 dark:text-blue-600;
 }
+
+.lucide[width="24"][height="24"] {
+    @apply w-[16px] h-[16px];
+}