diff --git a/backend/packages/harness/deerflow/domain/__init__.py b/backend/packages/harness/deerflow/domain/__init__.py
index 75edaa1c9..eadf335e7 100644
--- a/backend/packages/harness/deerflow/domain/__init__.py
+++ b/backend/packages/harness/deerflow/domain/__init__.py
@@ -5,5 +5,6 @@ Every package under this namespace is one bounded context laid out as
 dependencies -- no sqlalchemy/fastapi/pydantic, no `app.*`, and no
 harness infrastructure modules (enforced in CI by
 `tests/test_harness_domain_purity.py`). Adapters implementing the ports
-live in `app/infra/`; wiring happens only in `app/gateway/deps.py`.
+live in `app/adapters/{context}/`; wiring happens only in the composition
+root, `app/composition.py::build_domain_services`.
 """
diff --git a/backend/packages/harness/deerflow/domain/feedback/model.py b/backend/packages/harness/deerflow/domain/feedback/model.py
index 0e76e4f80..b95884ad0 100644
--- a/backend/packages/harness/deerflow/domain/feedback/model.py
+++ b/backend/packages/harness/deerflow/domain/feedback/model.py
@@ -4,7 +4,7 @@ import uuid
 from dataclasses import dataclass, field
 from datetime import UTC, datetime
 
-from deerflow.domain.feedback import InvalidRatingError, InvalidTagError
+from deerflow.domain.feedback.exceptions import InvalidRatingError, InvalidTagError
 
 VALID_RATINGS = (-1, 1)
 
diff --git a/backend/packages/harness/deerflow/persistence/feedback/__init__.py b/backend/packages/harness/deerflow/persistence/feedback/__init__.py
index 6a1ca9f3f..2aaa359df 100644
--- a/backend/packages/harness/deerflow/persistence/feedback/__init__.py
+++ b/backend/packages/harness/deerflow/persistence/feedback/__init__.py
@@ -2,8 +2,8 @@
 
 The legacy SQL repository was replaced by the hexagonal slice:
 port `deerflow.domain.feedback.ports.FeedbackRepository`, adapter
-`app.infra.persistence.feedback.SqlFeedbackRepository`. The ORM row stays
-here until PR-N moves engine/models/migrations into app/infra.
+`app.adapters.feedback.feedback_repository.SqlFeedbackRepository`. The ORM
+row stays here beside the harness-owned engine/models/migrations.
 """
 
 from deerflow.persistence.feedback.model import FeedbackRow