feat: post reshare enhancements

internal/handler/social.go

@@ -59,18 +59,19 @@ func (h *PostHandler) Create(w http.ResponseWriter, r *http.Request) {
 	response.JSON(w, http.StatusCreated, p)
 }
 
-// Reshare records the caller as having reshared the post identified
-// by {id}. Idempotent. Returns 204 on success; conflict for the
-// "reshare your own post" case surfaces as 400 via mapSocialErr's
-// fallthrough (errors.New wrapper in the service).
+// Reshare materialises a reshare of the post identified by {id} as a
+// new posts row owned by the caller. Idempotent — second call returns
+// the same row (still 201). The body is the new (or existing) post so
+// the frontend can drop it into its local feed without a refetch.
 func (h *PostHandler) Reshare(w http.ResponseWriter, r *http.Request) {
 	uid := middleware.UserID(r.Context())
 	id := chi.URLParam(r, "id")
-	if err := h.svc.Reshare(r.Context(), id, uid); err != nil {
+	p, err := h.svc.Reshare(r.Context(), id, uid)
+	if err != nil {
 		mapSocialErr(w, err)
 		return
 	}
-	w.WriteHeader(http.StatusNoContent)
+	response.JSON(w, http.StatusCreated, p)
 }
 
 // Unreshare removes a previously recorded reshare. Idempotent.