fix: post reshare and audio player enhancements

lib/social.ts

@@ -62,16 +62,21 @@ export type Post = {
   author_name?: string;
   author_handle?: string;
   author_avatar_url?: string | null;
-  /** True when the calling viewer has reshared this post. Populated by
-   *  endpoints that go through OptionalAuth (single post, profile feed,
-   *  collection contents). Always false / absent for anonymous viewers.
-   *  Drives the post-card "Reshare ↔ Send" swap. */
+  /** True when the calling viewer has reshared the canonical version
+   *  of this post. Populated by endpoints that go through OptionalAuth
+   *  (single post, profile feed, collection contents). Always false /
+   *  absent for anonymous viewers. Drives the post-card "Reshare ↔ Send"
+   *  swap. */
   viewer_has_reshared?: boolean;
-  /** Non-null only on rows that appear in a profile feed because the
-   *  profile owner reshared them. Drives the "↻ Reshared" header in
-   *  the post card and the COALESCE(reshared_at, created_at) sort on
-   *  the BFF. Authored posts leave this null. */
-  reshared_at?: string | null;
+  /** Non-null only when this row is itself a reshare — points at the
+   *  canonical original. The four `original_author_*` fields carry the
+   *  canonical author's profile info for rendering the
+   *  "Reshared from @handle" link in the card. Authored canonical posts
+   *  leave all of these null/absent. */
+  reshared_from_post_id?: string | null;
+  original_author_name?: string | null;
+  original_author_handle?: string | null;
+  original_author_avatar_url?: string | null;
 };
 
 export type Bookmark = {
@@ -153,8 +158,11 @@ export const posts = {
    *  side. Resharing your own post is rejected with 400 (not currently
    *  surfaced as a distinct error type because the UI only ever offers
    *  Reshare on non-owned posts). */
+  /** Materialise a reshare. Returns the new post (or the existing
+   *  reshare row if the caller already reshared this canonical), so
+   *  callers can drop it straight into local feed state. */
   reshare(id: string) {
-    return call<void>(`/posts/${id}/reshare`, { method: "POST" });
+    return call<Post>(`/posts/${id}/reshare`, { method: "POST" });
   },
   /** Remove a previously recorded reshare. Idempotent. */
   unreshare(id: string) {