Fix ai-service Dockerfile: bake in drug_entities.json, override its path

apps/ai-service/tests/test_live_datastores.py

@@ -18,6 +18,9 @@ ROOT = Path(__file__).resolve().parents[3]
 CHUNKS = ROOT / "ingestion/data/processed/chunks.jsonl"
 PDF = ROOT / "ingestion/data/raw/duoc-thu-quoc-gia-viet-nam-2018.pdf"
 MIGRATION = Path(__file__).resolve().parents[1] / "migrations/001_rag_retrieval_trace.sql"
+CONVERSATION_MIGRATION = (
+    Path(__file__).resolve().parents[1] / "migrations/002_rag_conversation_turn.sql"
+)
 
 
 class _PlumbingEmbedder:
@@ -131,6 +134,38 @@ def test_real_postgres_migration_insert_and_read_back():
     assert stored.citations[0]["printed_page_start"] == 101
 
 
+def test_real_postgres_conversation_store_round_trip():
+    """F-08's durable conversation history against a real Postgres, not a
+    fake — proves `append`/`recent` actually persist and window correctly,
+    the concrete capability this whole feature exists to add over the
+    in-process dict it replaces."""
+    from adapters.postgres import PostgresConversationStore
+
+    store = PostgresConversationStore(
+        "postgresql://duoc_thu:duoc_thu@localhost:5432/duoc_thu"
+    )
+    store.migrate(CONVERSATION_MIGRATION)
+    conversation_id = f"test-{uuid.uuid4()}"
+
+    store.append(conversation_id, "Người dùng: liều paracetamol")
+    store.append(conversation_id, "Trợ lý: cần biết đối tượng")
+    store.append(conversation_id, "Người dùng: người lớn")
+
+    assert store.recent(conversation_id, limit=10) == [
+        "Người dùng: liều paracetamol",
+        "Trợ lý: cần biết đối tượng",
+        "Người dùng: người lớn",
+    ]
+    # Windowing at read time: the oldest line falls outside a limit=2 read.
+    assert store.recent(conversation_id, limit=2) == [
+        "Trợ lý: cần biết đối tượng",
+        "Người dùng: người lớn",
+    ]
+    # A conversation_id that was never written to reads back empty, not an
+    # error — the same "no history yet" case a fresh conversation hits live.
+    assert store.recent(f"never-seen-{uuid.uuid4()}", limit=10) == []
+
+
 class _FakeJsonLlm:
     """Deterministic stand-in for the Bedrock Converse generator. Satisfies
     both `JsonLlm` (query understanding) and `AnswerGenerator` (answer +