fix: extend polling budget for slow WorldQuant PnL

backend/tests/test_worldquant.py

@@ -265,3 +265,49 @@ async def test_concurrent_expiry_authenticates_once(settings):
     assert await asyncio.gather(client.profile(), client.profile()) == [{"id": "user"}, {"id": "user"}]
     assert auth_count == 2  # Initial connection plus one shared reauthentication.
     await client.close()
+
+
+async def test_slow_pnl_waits_beyond_network_retry_budget(settings):
+    calls, delays = 0, []
+
+    async def sleep(delay):
+        delays.append(delay)
+
+    def handler(request):
+        nonlocal calls
+        calls += 1
+        assert request.url.path == '/alphas/LL977PqL/recordsets/pnl'
+        if calls <= 6:
+            return httpx.Response(200, headers={'Retry-After': '1.0'})
+        return httpx.Response(200, json={'records': []})
+
+    client = WqClient(settings, transport=httpx.MockTransport(handler), sleep=sleep)
+    client.credentials, client.authenticated = ('test@example.com', 'secret'), True
+    try:
+        assert await client.pnl('LL977PqL') == {'records': []}
+        assert calls == 7
+        assert delays == [1.0] * 6
+    finally:
+        await client.close()
+
+
+async def test_pnl_polling_remains_bounded(settings):
+    settings.pnl_poll_attempts = 5
+    delays = []
+
+    async def sleep(delay):
+        delays.append(delay)
+
+    client = WqClient(
+        settings,
+        transport=httpx.MockTransport(lambda r: httpx.Response(200, headers={'Retry-After': '1.0'})),
+        sleep=sleep,
+    )
+    client.credentials, client.authenticated = ('test@example.com', 'secret'), True
+    try:
+        with pytest.raises(WqError) as error:
+            await client.pnl('LL977PqL')
+        assert error.value.code == 'pending'
+        assert delays == [1.0] * 4
+    finally:
+        await client.close()