fix: feed repitition

internal/handler/social.go

@@ -259,6 +259,14 @@ func (h *PostHandler) Feed(w http.ResponseWriter, r *http.Request) {
 	response.JSON(w, http.StatusOK, posts)
 }
 
+// FeedReset — POST /feed/reset. Clears the caller's home-feed seen-set so the
+// next page starts fresh. Called on logout and on page unload (the realtime
+// socket dropping) to evict the set promptly rather than waiting for its TTL.
+func (h *PostHandler) FeedReset(w http.ResponseWriter, r *http.Request) {
+	h.svc.ResetFeed(r.Context(), middleware.UserID(r.Context()))
+	response.NoContent(w)
+}
+
 // FeedNewUsers — GET /feed/new-users. Up to 5 accounts that joined in the last
 // 24h, for the feed's "new on the platform" discovery strip. Returns [] when
 // there are none (the client hides the section).