test(06.2-01): add xfail stubs for cloud-delete document tests (Task 2)

- test_delete_cloud_document_propagates: cloud backend delete_object called for non-minio docs (D-01)
- test_delete_cloud_document_failure: structured JSON error when provider raises (D-03)
- test_delete_cloud_remove_only: remove_only=true skips cloud delete, removes DB row only (D-02)

backend/tests/test_documents.py

@@ -629,3 +629,23 @@ async def test_stream_document_content_cloud_backend_error(async_client, auth_us
     )
     assert resp.status_code == 502, f"Expected 502, got {resp.status_code}: {resp.text}"
     assert "Cloud backend unreachable" in resp.json()["detail"]
+
+
+# ---------------------------------------------------------------------------
+# Phase 6.2 Wave 0 xfail stubs — cloud document delete
+# ---------------------------------------------------------------------------
+
+
+async def test_delete_cloud_document_propagates(async_client, auth_user, db_session):
+    """DELETE /api/documents/{id} for a cloud doc calls cloud backend delete_object (D-01)"""
+    pytest.xfail("Phase 6.2 — not implemented yet")
+
+
+async def test_delete_cloud_document_failure(async_client, auth_user, db_session):
+    """DELETE /api/documents/{id} returns cloud_delete_failed=True when provider raises (D-03)"""
+    pytest.xfail("Phase 6.2 — not implemented yet")
+
+
+async def test_delete_cloud_remove_only(async_client, auth_user, db_session):
+    """DELETE /api/documents/{id}?remove_only=true skips cloud delete, removes DB row only (D-02)"""
+    pytest.xfail("Phase 6.2 — not implemented yet")