Add read-only production runtime audit

apps/ai-service/tests/test_understanding.py

@@ -16,6 +16,7 @@ from rag.understanding import (
     SECTION_KEYS,
     LlmQueryUnderstander,
     QueryFrame,
+    _merge_with_prior_frame,
 )
 
 CATALOG = {
@@ -162,6 +163,29 @@ def test_single_section_named_is_unaffected_by_the_multi_section_clarify():
     assert frame.needs_clarify is False
 
 
+def test_multi_section_clarify_does_not_inherit_a_stale_prior_attribute():
+    prior = QueryFrame(
+        turn_type="drug_attribute",
+        drugs=("paracetamol_acetaminophen",),
+        attribute="lieu_luong_va_cach_dung",
+        needs_clarify=True,
+        clarify_reason="Anh/chị muốn tra gì?",
+    )
+    current = QueryFrame(
+        turn_type="drug_attribute",
+        drugs=("paracetamol_acetaminophen",),
+        attribute=None,
+        needs_clarify=True,
+        clarify_reason="Anh/chị muốn xem mục nào trước?",
+        quick_replies=("Chỉ định", "Chống chỉ định"),
+    )
+
+    merged = _merge_with_prior_frame(current, prior)
+
+    assert merged.attribute is None
+    assert merged.quick_replies == ("Chỉ định", "Chống chỉ định")
+
+
 def test_exact_candidate_does_not_repeat_the_catalog_wide_fuzzy_scan():
     resolver = _FakeResolver({"metformin": "metformin"})
     understander = LlmQueryUnderstander(_FixedLlm({