[Kiveiru3]

Summary

Part of #40372, following the established model cleanup pattern from #40370, #41569, and #41721.

Removes ten legacy @Property accessors on Conversation in api/models/model.py that implicitly reach for the global db.session():

• summary_or_query
• annotated
• annotation
• message_count
• user_feedback_stats
• admin_feedback_stats
• status_count
• first_message
• from_end_user_session_id
• from_account_name

All production response reads already go through ConversationResponseSource and the existing *_with_session methods. The direct model and container-test reads were updated to pass the caller-owned session explicitly.

This intentionally leaves inputs, model_config, and app untouched because they still have active property consumers or setter behavior and require a separate migration.

Claimed this slice in #40372 (comment).

Tests

• pytest -q api/tests/unit_tests/models/test_app_models.py api/tests/unit_tests/controllers/console/app/test_conversation_api.py — 61 passed
• Ruff check passed
• Ruff format check passed
• Pyrefly passed for api/models/model.py
• Mypy passed for api/models/model.py

Screenshots

N/A (backend-only refactor).

Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran make lint && make type-check (backend) and vp staged (frontend) to appease the lint gods

[github-actions]

Pyrefly Diff

base → PR

--- /tmp/pyrefly_base.txt	2026-09-05 10:30:55.930331003 +0000
+++ /tmp/pyrefly_pr.txt	2026-09-05 10:30:47.398343503 +0000
@@ -8075,7 +8075,7 @@
 ERROR Argument `dict[str, bool]` is not assignable to parameter `annotation_reply` with type `AnnotationReplyDisabledConfig | AnnotationReplyEnabledConfig | None` in function `models.model.AppModelConfig.to_dict` [bad-argument-type]
    --> tests/unit_tests/models/test_app_models.py:398:54
 ERROR Object of class `FromClause` has no attribute `insert` [missing-attribute]
-    --> tests/unit_tests/models/test_app_models.py:1132:13
+    --> tests/unit_tests/models/test_app_models.py:1133:13
 ERROR `None` is not subscriptable [unsupported-operation]
    --> tests/unit_tests/models/test_dataset_models.py:331:16
 ERROR `None` is not subscriptable [unsupported-operation]

[github-actions]

Pyrefly Type Coverage

Metric	Base	PR	Delta
Type coverage	63.14%	63.14%	-0.00%
Strict coverage	62.75%	62.75%	-0.00%
Typed symbols	44,671	44,664	-7
Untyped symbols	26,242	26,240	-2
Modules	3344	3344	0