feat: add favorites state and buttons

src/components/messageStream/MessageBubble.tsx

@@ -8,6 +8,7 @@ import { AlbumBubble } from "./bubbles/AlbumBubble";
 import { VideoBubble } from "./bubbles/VideoBubble";
 import { LinkPreviewCard } from "./LinkPreviewCard";
 import { formatDateTime } from "./utils/formatTime";
+import { FavoriteButton } from "../../favorites/FavoriteButton";
 
 type BubbleComponent = ComponentType<{ post: Post }>;
 
@@ -53,6 +54,11 @@ export function MessageBubble({
           isVisual ? "p-0" : "px-4 py-3"
         }`}
       >
+        <FavoriteButton
+          resourceId={post.id}
+          size="sm"
+          className="absolute right-3 top-3 z-20 shadow-lg shadow-black/30"
+        />
         <Bubble post={post} />
         {post.linkPreview ? (
           <div className={isVisual ? "px-4 pt-3" : "mt-3"}>