Use hub 'name' in routes & add top-post sorting

Switch hub endpoints to use the hub `name` slug and update frontend routes/clients accordingly. Backend: HubViewSet now uses lookup_field='name'; PostViewSet list supports `sort=top` with vote_score annotation and time windows/custom ranges, and a new TopPostsCursorPagination was added. Frontend: routes changed from `/hub/:id` to `/h/:name`, the generated hubs API was updated from id->name, and the hub feed client accepts `sort`, `time`, `start`, and `end` params (query key updated). Also adds new homepage UI components (HeroSection, DroneSection) and navbar improvements (scroll state, auto-close mobile menu on route changes, and small icon/class tweaks).

backend/social/hubs/views.py

@@ -58,6 +58,7 @@ from .serializers import HubPermissionSerializer, HubSerializer, TagsSerializer,
 class HubViewSet(viewsets.ModelViewSet):
     serializer_class = HubSerializer
     permission_classes = [CanEditHub]
+    lookup_field = 'name'
     filterset_fields = ['is_public', 'owner']
     search_fields = ['name', 'description']
     ordering_fields = ['name']

backend/social/posts/views.py

@@ -1,4 +1,8 @@
-from django.db.models import Count, Q
+from datetime import timedelta
+
+from django.db.models import Count, Q, Sum
+from django.db.models.functions import Coalesce
+from django.utils import timezone
 from rest_framework import status, viewsets
 from rest_framework.decorators import action
 from rest_framework.exceptions import PermissionDenied, ValidationError
@@ -8,7 +12,7 @@ from drf_spectacular.utils import extend_schema, extend_schema_view, OpenApiPara
 
 from rest_framework.permissions import IsAuthenticated
 from social.hubs.models import Tags
-from vontor_cz.pagination import CreatedCursorPagination
+from vontor_cz.pagination import CreatedCursorPagination, TopPostsCursorPagination
 from .models import Post, PostContent, PostVote, PostSave
 from .permissions import CanDeletePost, IsPostAuthorOnly
 from .serializers import PostSerializer, PostContentSerializer, PostVoteSerializer, TagAttachSerializer
@@ -78,6 +82,51 @@ class PostViewSet(viewsets.ModelViewSet):
     def perform_create(self, serializer):
         serializer.save(author=self.request.user)
 
+    _TIME_WINDOWS = {
+        '1h':    timedelta(hours=1),
+        '6h':    timedelta(hours=6),
+        'day':   timedelta(days=1),
+        'week':  timedelta(weeks=1),
+        'month': timedelta(days=30),
+        'year':  timedelta(days=365),
+    }
+
+    def _get_cutoff(self, time_param):
+        """Return a datetime cutoff for the given time window, or None for 'all'."""
+        if time_param in self._TIME_WINDOWS:
+            return timezone.now() - self._TIME_WINDOWS[time_param]
+        return None
+
+    def list(self, request, *args, **kwargs):
+        sort = request.query_params.get('sort', 'newest')
+        time_param = request.query_params.get('time', 'all')
+
+        qs = self.filter_queryset(self.get_queryset())
+
+        # Time filter
+        if time_param == 'custom':
+            start = request.query_params.get('start')
+            end = request.query_params.get('end')
+            if start:
+                qs = qs.filter(created_at__date__gte=start)
+            if end:
+                qs = qs.filter(created_at__date__lte=end)
+        else:
+            cutoff = self._get_cutoff(time_param)
+            if cutoff:
+                qs = qs.filter(created_at__gte=cutoff)
+
+        if sort == 'top':
+            qs = qs.annotate(vote_score=Coalesce(Sum('votes__vote'), 0)).order_by('-vote_score', '-id')
+            paginator = TopPostsCursorPagination()
+        else:
+            qs = qs.order_by('-created_at')
+            paginator = CreatedCursorPagination()
+
+        page = paginator.paginate_queryset(qs, request, view=self)
+        ser = PostSerializer(page, many=True, context={'request': request})
+        return paginator.get_paginated_response(ser.data)
+
     # ------------------------------------------------------------------
     # Media upload action
     # ------------------------------------------------------------------