test: update tests for new session_id behavior

session_id "new" now returns null at creation (set from SDK after completion).
Session tests use custom session_ids directly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/test_api_requests.py

@@ -49,8 +49,8 @@ async def test_create_request_with_new_session(client, topic_id):
     )
     assert resp.status_code == 202
     data = resp.json()
-    assert data["data"]["session_id"] is not None
-    assert data["data"]["session_id"] != "new"
+    # session_id is None at creation; gets set from SDK after completion
+    assert data["data"]["session_id"] is None
 
 
 @pytest.mark.asyncio

tests/test_api_sessions.py

@@ -37,12 +37,12 @@ async def test_list_sessions_empty(client):
 
 @pytest.mark.asyncio
 async def test_list_sessions_with_data(client, topic_id):
-    resp1 = await client.post(
+    # Use a custom session_id (not "new") so it's set immediately
+    session_id = "test-session-abc"
+    await client.post(
         "/api/requests",
-        json={"prompt": "First", "topic_id": topic_id, "session_id": "new"},
+        json={"prompt": "First", "topic_id": topic_id, "session_id": session_id},
     )
-    session_id = resp1.json()["data"]["session_id"]
-
     await client.post(
         "/api/requests",
         json={"prompt": "Second", "topic_id": topic_id, "session_id": session_id},
@@ -58,11 +58,11 @@ async def test_list_sessions_with_data(client, topic_id):
 
 @pytest.mark.asyncio
 async def test_delete_session(client, topic_id):
-    resp1 = await client.post(
+    session_id = "test-session-delete"
+    await client.post(
         "/api/requests",
-        json={"prompt": "Hello", "topic_id": topic_id, "session_id": "new"},
+        json={"prompt": "Hello", "topic_id": topic_id, "session_id": session_id},
     )
-    session_id = resp1.json()["data"]["session_id"]
 
     resp = await client.delete(f"/api/sessions/{session_id}")
     assert resp.status_code == 200