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.

.claude/settings.local.json

@@ -9,7 +9,8 @@
       "Bash(npx eslint *)",
       "Bash(python -c ' *)",
       "PowerShell(Get-ChildItem -Path \"c:\\\\Users\\\\bruno\\\\Documents\\\\GitHub\\\\vontor-cz\\\\frontend\\\\src\\\\components\\\\social\" -File -Recurse | Select-Object FullName, @{n='Lines';e={\\(Get-Content $_.FullName | Measure-Object -Line\\).Lines}} | Format-Table -AutoSize)",
-      "Bash(grep -E \"\\\\.\\(ts|tsx\\)$\")"
+      "Bash(grep -E \"\\\\.\\(ts|tsx\\)$\")",
+      "Bash(grep -v \"^$\")"
     ]
   }
 }