curl --request GET \
  --url https://api.hyperspell.com/context-documents/tree/{tree_id}/diff \
  --header 'Authorization: Bearer <token>'

{
  "tree_id": "<string>",
  "previous_tree_id": "<string>",
  "files_added": 123,
  "files_removed": 123,
  "files_changed": 123,
  "files_unchanged": 123,
  "diffs": [
    {
      "path": "<string>",
      "status": "<string>",
      "old_content": "<string>",
      "new_content": "<string>"
    }
  ]
}