Improve chat replies, hubs API & UI

Backend: enrich message reply data (include created_at and media_files) and ensure chat owners are treated as members; tighten/extend permission checks and message query filters; fix hub routers so moderators/tags routes are resolved before hub detail; accept hub id from request.data in hub permission/tag views; add PostHub serializer and expose hub_detail on posts.

Frontend: update generated API models (postHub, replyTo, members_detail, hub_detail); add hub-related pages/routes and components (HubCard, HubHeader, Tags) and a hub posts feed hook; rework message UI and composer to show richer reply previews (media thumbnails, timestamps), adjust video preload to metadata; add tag selection UI to PostComposer and wire hub tags fetching.

Also: minor UI/UX improvements and generated model exports updated to match backend changes.

backend/social/chat/permissions.py

@@ -9,7 +9,11 @@ class IsChatMember(IsAuthenticated):
     """
 
     def has_object_permission(self, request, view, obj):
-        return request.user.is_superuser or obj.members.filter(pk=request.user.pk).exists()
+        return (
+            request.user.is_superuser
+            or obj.owner == request.user
+            or obj.members.filter(pk=request.user.pk).exists()
+        )
 
 
 class CanManageChat(IsAuthenticated):