code quality updates

Author: Trojan-Dev-AFK

tests/conftest.py

@@ -2,12 +2,25 @@
 
 from __future__ import annotations
 
+import os
 from collections.abc import AsyncGenerator
 from unittest.mock import AsyncMock, Mock
 
 import pytest
 from fastapi.testclient import TestClient
 
+# Ensure settings can initialize in CI even when no .env is provided.
+os.environ.setdefault("DATABASE_URL_ASYNC", "postgresql+asyncpg://test:test@localhost:5432/test")
+os.environ.setdefault("DATABASE_URL_SYNC", "postgresql://test:test@localhost:5432/test")
+os.environ.setdefault("REDIS_URL", "redis://localhost:6379/0")
+os.environ.setdefault("SECRET_KEY", "test-secret-key")
+os.environ.setdefault("ALGORITHM", "HS256")
+os.environ.setdefault("ACCESS_TOKEN_EXPIRE_MINUTES", "60")
+os.environ.setdefault("EMBEDDING_MODEL", "all-MiniLM-L6-v2")
+os.environ.setdefault("CHUNK_SIZE", "1000")
+os.environ.setdefault("CHUNK_OVERLAP", "200")
+os.environ.setdefault("ENCODING", "utf-8")
+
 from app.agent.tools import vector_search
 from app.main import app