Fix CI failures: Python formatting and Node.js session test assertion

- Fix Python copilot/client.py ruff format check by collapsing
  get_session_metadata method signature and request call to single lines
- Fix Node.js session.test.ts assertion to check first message only,
  since CLI 1.0.11 now emits session.custom_agents_updated after
  session.start (matching the same fix needed on main)

Author: MackinnonBuck

nodejs/test/e2e/session.test.ts

@@ -15,12 +15,11 @@ describe("Sessions", async () => {
         });
         expect(session.sessionId).toMatch(/^[a-f0-9-]+$/);
 
-        expect(await session.getMessages()).toMatchObject([
-            {
-                type: "session.start",
-                data: { sessionId: session.sessionId, selectedModel: "fake-test-model" },
-            },
-        ]);
+        const messages = await session.getMessages();
+        expect(messages[0]).toMatchObject({
+            type: "session.start",
+            data: { sessionId: session.sessionId, selectedModel: "fake-test-model" },
+        });
 
         await session.disconnect();
         await expect(() => session.getMessages()).rejects.toThrow(/Session not found/);

python/copilot/client.py

@@ -1643,9 +1643,7 @@ async def list_sessions(self, filter: SessionListFilter | None = None) -> list[S
         sessions_data = response.get("sessions", [])
         return [SessionMetadata.from_dict(session) for session in sessions_data]
 
-    async def get_session_metadata(
-        self, session_id: str
-    ) -> "SessionMetadata | None":
+    async def get_session_metadata(self, session_id: str) -> "SessionMetadata | None":
         """
         Get metadata for a specific session by ID.
 
@@ -1669,9 +1667,7 @@ async def get_session_metadata(
         if not self._client:
             raise RuntimeError("Client not connected")
 
-        response = await self._client.request(
-            "session.getMetadata", {"sessionId": session_id}
-        )
+        response = await self._client.request("session.getMetadata", {"sessionId": session_id})
         session_data = response.get("session")
         if session_data is None:
             return None