feat(backend): policy rules show what they inherit, files of a chat or folder go to trash in one batch, trash list is paged

backend/src/utils/read/models.py

@@ -287,6 +287,14 @@ class TrashOutcome(BaseModel):
     blocked: list[int] = []
 
 
+class StorageScopeView(BaseModel):
+    chats: int
+    files: int
+    bytes: int
+    kept: int
+    gone: int
+
+
 class AvatarRef(BaseModel):
     unique_id: str
     storage_key: str | None