feat(backend): feed lists name, username and photo changes of people and chat renames, merged per day

backend/src/utils/read/models.py

@@ -235,6 +235,7 @@ class FeedItem(BaseModel):
     after: str | None = None
     has_before: bool = False
     edit_date: datetime | None = None
+    detail: dict[str, list[str | None]] | None = None
 
 
 class FeedPage(BaseModel):