fix(files): force a final answer before tool cutoff

dev/test_openwebui_filters.py

@@ -159,6 +159,39 @@ class StabilityGuardTests(unittest.IsolatedAsyncioTestCase):
             ["execute_code"],
         )
 
+    async def test_private_csv_stops_before_openwebui_hard_tool_limit(self):
+        calls = []
+        for index in range(6):
+            calls.extend(
+                [
+                    {
+                        "role": "assistant",
+                        "tool_calls": [
+                            {
+                                "function": {
+                                    "name": "execute_code",
+                                    "arguments": '{"code":"step %d"}' % index,
+                                }
+                            }
+                        ],
+                    },
+                    {"role": "tool", "content": "ok", "tool_call_id": str(index)},
+                ]
+            )
+        body = {
+            "model": "qwen-fast",
+            "tools": [
+                {"type": "function", "function": {"name": "execute_code"}},
+            ],
+            "messages": [
+                {"role": "user", "content": "Werte diese CSV aus."},
+                *calls,
+            ],
+        }
+        result = await self.guard.inlet(body)
+        self.assertEqual(result["tools"], [])
+        self.assertIn("vorhandenen Ergebnisse", result["messages"][0]["content"])
+
 
 class AutoToolSelectorTests(unittest.IsolatedAsyncioTestCase):
     async def asyncSetUp(self):