Properly skip a2a tests if fasta2a not installed

tests/test_a2a.py

@@ -2,15 +2,6 @@ import uuid
 
 import pytest
 
-from haiku.rag.a2a import (
-    extract_question_from_task,
-    get_agent_skills,
-    load_message_history,
-    save_message_history,
-)
-from haiku.rag.a2a.storage import LRUMemoryStorage
-from haiku.rag.client import HaikuRAG
-
 pytest.importorskip("fasta2a")
 
 from fasta2a.schema import Message, TextPart  # noqa: E402
@@ -25,6 +16,15 @@ from pydantic_ai.messages import (
     TextPart as AITextPart,
 )
 
+from haiku.rag.a2a import (
+    extract_question_from_task,
+    get_agent_skills,
+    load_message_history,
+    save_message_history,
+)
+from haiku.rag.a2a.storage import LRUMemoryStorage
+from haiku.rag.client import HaikuRAG
+
 
 @pytest.mark.asyncio
 async def test_save_and_load_message_history():

tests/test_app.py

@@ -255,6 +255,7 @@ async def test_serve_monitor_only(app: HaikuRAGApp, monkeypatch):
 @pytest.mark.asyncio
 async def test_serve_a2a_only(app: HaikuRAGApp, monkeypatch):
     """Test the serve method with A2A server only."""
+    pytest.importorskip("fasta2a")
     created_tasks = []
     original_create_task = asyncio.create_task
 
@@ -287,6 +288,7 @@ async def test_serve_a2a_only(app: HaikuRAGApp, monkeypatch):
 @pytest.mark.asyncio
 async def test_serve_all_services(app: HaikuRAGApp, monkeypatch):
     """Test the serve method with all services enabled."""
+    pytest.importorskip("fasta2a")
     created_tasks = []
     original_create_task = asyncio.create_task