Wire up query history: localStorage session persistence + sidebar UI

apps/ai-service/tests/test_section_routing.py

@@ -177,6 +177,49 @@ class TestSectionResolver:
         )
 
 
+class TestSectionResolverResolveAll:
+    """`resolve_all` — the fix for `abstain/incomplete_answer` reproduced
+    live 2026-08-14 on "Chỉ định và chống chỉ định của Aspirin là gì?":
+    `resolve()` silently picked one section, retrieval only fetched that
+    one, and the still-broad question failed the completeness check against
+    it. These pin that a genuine two-section question reports both, while a
+    substring collision (the exact case `resolve()` itself guards against)
+    still reports only one.
+    """
+
+    def test_two_genuinely_named_sections_both_reported(self) -> None:
+        resolver = SectionResolver()
+        matches = resolver.resolve_all(
+            "Chỉ định và chống chỉ định của Aspirin là gì?"
+        )
+        assert {m.section_key for m in matches} == {"chi_dinh", "chong_chi_dinh"}
+
+    def test_substring_collision_is_not_double_counted(self) -> None:
+        """"chỉ định" is a literal substring of "chống chỉ định" — this must
+        stay a single match, exactly like `resolve()` already guarantees."""
+        resolver = SectionResolver()
+        matches = resolver.resolve_all("Chống chỉ định của aspirin là gì?")
+        assert [m.section_key for m in matches] == ["chong_chi_dinh"]
+
+    def test_three_sections_named_at_once(self) -> None:
+        resolver = SectionResolver()
+        matches = resolver.resolve_all(
+            "Liều dùng, chống chỉ định và tương tác thuốc của Metformin?"
+        )
+        assert {m.section_key for m in matches} == {
+            "lieu_luong_va_cach_dung", "chong_chi_dinh", "tuong_tac_thuoc",
+        }
+
+    def test_single_section_question_still_returns_one(self) -> None:
+        resolver = SectionResolver()
+        matches = resolver.resolve_all("Liều dùng metformin?")
+        assert [m.section_key for m in matches] == ["lieu_luong_va_cach_dung"]
+
+    def test_unrecognised_question_returns_empty(self) -> None:
+        assert SectionResolver().resolve_all("thuốc này giá bao nhiêu") == ()
+        assert SectionResolver().resolve_all("") == ()
+
+
 class TestSectionRouting:
     def test_named_section_bypasses_similarity_entirely(self) -> None:
         retriever = SectionAwareRetriever(ALL_DOCS)