feat: add submitted collection, /similar and /submitted endpoints (Stage 4)

Made-with: Cursor

tests/conftest.py

@@ -0,0 +1,16 @@
+"""
+Pytest fixtures для RAG сервиса.
+"""
+
+import os
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def allow_no_auth():
+    """Разрешает запросы без API ключа в тестах."""
+    os.environ["RAG_ALLOW_NO_AUTH"] = "true"
+    yield
+    if "RAG_ALLOW_NO_AUTH" in os.environ:
+        del os.environ["RAG_ALLOW_NO_AUTH"]