fix(ops): avoid truncating stockplatform runtime readback

apps/api/tests/test_stockplatform_public_api_runtime_readback.py

@@ -7,6 +7,7 @@ from fastapi.testclient import TestClient
 
 from src.api.v1 import agents
 from src.api.v1.agents import router
+from src.services import stockplatform_public_api_runtime_readback as runtime_readback
 from src.services.stockplatform_public_api_runtime_readback import (
     load_latest_stockplatform_public_api_runtime_readback,
 )
@@ -235,6 +236,37 @@ def test_stockplatform_public_api_runtime_endpoint_returns_readback(monkeypatch)
     assert data["active_blocker_count"] == 5
 
 
+def test_http_probe_reads_full_large_json_body(monkeypatch):
+    body = json.dumps({"padding": "x" * 9000, "status": "ok"}).encode()
+
+    class Response:
+        status = 200
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, exc_type, exc, traceback):
+            return False
+
+        def read(self, size: int) -> bytes:
+            assert size >= len(body)
+            return body
+
+    monkeypatch.setattr(
+        runtime_readback.urllib.request,
+        "urlopen",
+        lambda request, timeout: Response(),
+    )
+
+    result = runtime_readback._http_probe(
+        "https://stock.wooo.work/api/v1/system/ingestion",
+        10,
+    )
+
+    assert result["http_status"] == 200
+    assert json.loads(result["body"])["status"] == "ok"
+
+
 def _probe_public_web_ok_api_502(url: str, timeout_seconds: float) -> dict:
     del timeout_seconds
     if url.endswith("/healthz") and "/api/" not in url: