refactor(models): pass session into AppAnnotationHitHistory accessors (#41832)

Co-authored-by: Claude <noreply@anthropic.com>

api/models/model.py

@@ -2123,17 +2123,15 @@ class AppAnnotationHitHistory(TypeBase):
     annotation_question: Mapped[str] = mapped_column(LongText, nullable=False)
     annotation_content: Mapped[str] = mapped_column(LongText, nullable=False)
 
-    @property
-    def account(self):
-        return db.session.scalar(
+    def account(self, session: Session) -> Account | None:
+        return session.scalar(
             select(Account)
             .join(MessageAnnotation, MessageAnnotation.account_id == Account.id)
             .where(MessageAnnotation.id == self.annotation_id)
         )
 
-    @property
-    def annotation_create_account(self):
-        return db.session.scalar(select(Account).where(Account.id == self.account_id))
+    def annotation_create_account(self, session: Session) -> Account | None:
+        return session.scalar(select(Account).where(Account.id == self.account_id))
 
 
 class AppAnnotationSetting(TypeBase):

api/tests/unit_tests/models/test_annotation_hit_history_session_accessors.py

@@ -0,0 +1,93 @@
+"""Regression coverage for the ``@property``→session-parameter refactor on
+``AppAnnotationHitHistory`` accessors.
+
+Covers two of `api/models/model.py`'s legacy `@property` accessors that reached for the global
+``db.session`` internally and have been converted to plain methods taking an explicit
+``session: Session`` (per the pattern established in #40370/#40797/#41394/#41830, tracked in
+#40372):
+
+- ``AppAnnotationHitHistory.account`` (joins through ``MessageAnnotation.account_id``)
+- ``AppAnnotationHitHistory.annotation_create_account`` (looks up ``self.account_id`` directly)
+
+Each accessor is exercised against the real ``sqlite_session`` fixture (a genuine SQLAlchemy
+``Session`` bound to a pristine full-schema SQLite database) so the assertions cover actual
+query behaviour rather than a mock's recorded call.
+"""
+
+from uuid import uuid4
+
+from sqlalchemy.orm import Session
+
+from models.account import Account
+from models.model import AppAnnotationHitHistory, MessageAnnotation
+
+
+def _persist_account(session: Session) -> Account:
+    account = Account(name="Test Account", email="test@example.com")
+    session.add(account)
+    session.flush()
+    return account
+
+
+def _persist_annotation(session: Session, *, app_id: str, account_id: str) -> MessageAnnotation:
+    annotation = MessageAnnotation(
+        app_id=app_id,
+        conversation_id=None,
+        message_id=None,
+        question="What is AI?",
+        content="AI stands for Artificial Intelligence.",
+        account_id=account_id,
+    )
+    session.add(annotation)
+    session.flush()
+    return annotation
+
+
+def _hit_history(*, app_id: str, annotation_id: str, account_id: str) -> AppAnnotationHitHistory:
+    return AppAnnotationHitHistory(
+        app_id=app_id,
+        annotation_id=annotation_id,
+        source="api",
+        question="What is AI?",
+        account_id=account_id,
+        score=0.95,
+        message_id=str(uuid4()),
+        annotation_question="What is AI?",
+        annotation_content="AI stands for Artificial Intelligence.",
+    )
+
+
+class TestAppAnnotationHitHistoryAccount:
+    def test_returns_the_annotation_creator(self, sqlite_session: Session) -> None:
+        app_id = str(uuid4())
+        creator = _persist_account(sqlite_session)
+        annotation = _persist_annotation(sqlite_session, app_id=app_id, account_id=creator.id)
+        history = _hit_history(app_id=app_id, annotation_id=annotation.id, account_id=str(uuid4()))
+
+        result = history.account(session=sqlite_session)
+
+        assert result is not None
+        assert result.id == creator.id
+
+    def test_returns_none_when_annotation_missing(self, sqlite_session: Session) -> None:
+        history = _hit_history(app_id=str(uuid4()), annotation_id=str(uuid4()), account_id=str(uuid4()))
+
+        assert history.account(session=sqlite_session) is None
+
+
+class TestAppAnnotationHitHistoryAnnotationCreateAccount:
+    def test_returns_the_hit_requester(self, sqlite_session: Session) -> None:
+        app_id = str(uuid4())
+        requester = _persist_account(sqlite_session)
+        annotation = _persist_annotation(sqlite_session, app_id=app_id, account_id=str(uuid4()))
+        history = _hit_history(app_id=app_id, annotation_id=annotation.id, account_id=requester.id)
+
+        result = history.annotation_create_account(session=sqlite_session)
+
+        assert result is not None
+        assert result.id == requester.id
+
+    def test_returns_none_when_account_missing(self, sqlite_session: Session) -> None:
+        history = _hit_history(app_id=str(uuid4()), annotation_id=str(uuid4()), account_id=str(uuid4()))
+
+        assert history.annotation_create_account(session=sqlite_session) is None