setup RAG (#6146)

engine/tests/conftest.py

@@ -1,10 +1,11 @@
 from __future__ import annotations
 
 from collections.abc import Iterator
+from pathlib import Path
 
 import pytest
 
-from stirling.config import AppSettings, load_settings
+from stirling.config import AppSettings, RagBackend, load_settings
 from stirling.services import build_runtime
 from stirling.services.runtime import AppRuntime
 
@@ -22,6 +23,13 @@ def build_app_settings() -> AppSettings:
         fast_model_name="test",
         smart_model_max_tokens=8192,
         fast_model_max_tokens=2048,
+        rag_backend=RagBackend.SQLITE,
+        rag_embedding_model="voyageai:voyage-4",
+        rag_store_path=Path(":memory:"),
+        rag_pgvector_dsn="",
+        rag_chunk_size=512,
+        rag_chunk_overlap=64,
+        rag_default_top_k=5,
         posthog_enabled=False,
         posthog_api_key="",
         posthog_host="https://eu.i.posthog.com",