fix: ruff formatting and allow-direct-references for handler-base dep

chat_handler.py

@@ -11,6 +11,7 @@ Text-based chat pipeline using handler-base:
 6. Optionally synthesize speech with XTTS
 7. Publish result to NATS "ai.chat.response.{request_id}"
 """
+
 import base64
 import logging
 from typing import Any, Optional
@@ -138,9 +139,7 @@ class ChatHandler(Handler):
             context = self._build_context(reranked)
 
             # 5. Generate LLM response
-            response_text = await self._generate_response(
-                query, context, system_prompt
-            )
+            response_text = await self._generate_response(query, context, system_prompt)
 
             # 6. Optionally synthesize speech
             audio_b64 = None
@@ -155,8 +154,7 @@ class ChatHandler(Handler):
 
             if self.chat_settings.include_sources:
                 result["sources"] = [
-                    {"text": d["document"][:200], "score": d["score"]}
-                    for d in reranked[:3]
+                    {"text": d["document"][:200], "score": d["score"]} for d in reranked[:3]
                 ]
 
             if audio_b64:
@@ -175,9 +173,7 @@ class ChatHandler(Handler):
         with create_span("chat.embedding"):
             return await self.embeddings.embed_single(text)
 
-    async def _search_context(
-        self, embedding: list[float], collection: str
-    ) -> list[dict]:
+    async def _search_context(self, embedding: list[float], collection: str) -> list[dict]:
         """Search Milvus for relevant documents."""
         with create_span("chat.search"):
             return await self.milvus.search_with_texts(
@@ -187,9 +183,7 @@ class ChatHandler(Handler):
                 metadata_fields=["source", "title"],
             )
 
-    async def _rerank_documents(
-        self, query: str, documents: list[dict]
-    ) -> list[dict]:
+    async def _rerank_documents(self, query: str, documents: list[dict]) -> list[dict]:
         """Rerank documents by relevance to query."""
         with create_span("chat.rerank"):
             texts = [d.get("text", "") for d in documents]

pyproject.toml

@@ -22,6 +22,9 @@ dev = [
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
+[tool.hatch.metadata]
+allow-direct-references = true
+
 [tool.hatch.build.targets.wheel]
 packages = ["."]
 only-include = ["chat_handler.py"]

tests/conftest.py

@@ -1,9 +1,10 @@
 """
 Pytest configuration and fixtures for chat-handler tests.
 """
+
 import asyncio
 import os
-from unittest.mock import AsyncMock, MagicMock, patch
+from unittest.mock import MagicMock
 
 import pytest
 

tests/test_chat_handler.py

@@ -1,9 +1,9 @@
 """
 Unit tests for ChatHandler.
 """
-import base64
+
 import pytest
-from unittest.mock import AsyncMock, MagicMock, patch
+from unittest.mock import AsyncMock, patch
 
 from chat_handler import ChatHandler, ChatSettings
 
@@ -42,12 +42,13 @@ class TestChatHandler:
     @pytest.fixture
     def handler(self):
         """Create handler with mocked clients."""
-        with patch("chat_handler.EmbeddingsClient"), \
-             patch("chat_handler.RerankerClient"), \
-             patch("chat_handler.LLMClient"), \
-             patch("chat_handler.TTSClient"), \
-             patch("chat_handler.MilvusClient"):
-            
+        with (
+            patch("chat_handler.EmbeddingsClient"),
+            patch("chat_handler.RerankerClient"),
+            patch("chat_handler.LLMClient"),
+            patch("chat_handler.TTSClient"),
+            patch("chat_handler.MilvusClient"),
+        ):
             handler = ChatHandler()
 
             # Setup mock clients
@@ -63,12 +64,13 @@ class TestChatHandler:
     @pytest.fixture
     def handler_with_tts(self):
         """Create handler with TTS enabled."""
-        with patch("chat_handler.EmbeddingsClient"), \
-             patch("chat_handler.RerankerClient"), \
-             patch("chat_handler.LLMClient"), \
-             patch("chat_handler.TTSClient"), \
-             patch("chat_handler.MilvusClient"):
-            
+        with (
+            patch("chat_handler.EmbeddingsClient"),
+            patch("chat_handler.RerankerClient"),
+            patch("chat_handler.LLMClient"),
+            patch("chat_handler.TTSClient"),
+            patch("chat_handler.MilvusClient"),
+        ):
             handler = ChatHandler()
             handler.chat_settings.enable_tts = True
 
@@ -211,12 +213,13 @@ class TestChatHandler:
     @pytest.mark.asyncio
     async def test_setup_initializes_clients(self):
         """Test that setup initializes all required clients."""
-        with patch("chat_handler.EmbeddingsClient") as emb_cls, \
-             patch("chat_handler.RerankerClient") as rer_cls, \
-             patch("chat_handler.LLMClient") as llm_cls, \
-             patch("chat_handler.TTSClient") as tts_cls, \
-             patch("chat_handler.MilvusClient") as mil_cls:
-            
+        with (
+            patch("chat_handler.EmbeddingsClient") as emb_cls,
+            patch("chat_handler.RerankerClient") as rer_cls,
+            patch("chat_handler.LLMClient") as llm_cls,
+            patch("chat_handler.TTSClient") as tts_cls,
+            patch("chat_handler.MilvusClient") as mil_cls,
+        ):
             mil_cls.return_value.connect = AsyncMock()
 
             handler = ChatHandler()