fix: show tool parameters and skip duplicate calls

backend/tests/test_chat_agent.py

@@ -267,7 +267,8 @@ def test_sse_persists_messages_and_tool_failure(session_factory, monkeypatch):
         assert [m["role"] for m in restored["messages"]] == ["user", "assistant"]
         assert len(restored["messages"][1]["tool_calls"]) == 9
         assert len({call["id"] for call in restored["messages"][1]["tool_calls"]}) == 9
-        assert all(call["status"] == "completed" and call["result"] for call in restored["messages"][1]["tool_calls"])
+        assert [call["status"] for call in restored["messages"][1]["tool_calls"]] == ["completed", *["skipped"] * 8]
+        assert all(call["result"] for call in restored["messages"][1]["tool_calls"])
         assert restored["runs"][0]["status"] == "completed"
         monkeypatch.setattr(chat_api, "client_for_chat", lambda db: (_ for _ in ()).throw(ModelError("不支持工具调用")))
         with client.stream("POST", f"/api/conversations/{created['id']}/messages", json={"content": "再试"}) as response:
@@ -285,6 +286,72 @@ def test_sse_persists_messages_and_tool_failure(session_factory, monkeypatch):
         app.dependency_overrides.clear()
 
 
+def test_tool_arguments_cover_registered_fields_without_review_prose():
+    numbers = {"course_version_id", "batch_id", "project_id", "score_id", "task_id", "rubric_version_id",
+               "score", "offset", "limit", "project_offset", "criterion_offset"}
+    strings = {"query", "criterion_id", "format", "status", "student_no", "relative_dir"}
+    redacted = {"comment", "reason"}
+    fields = set().union(*(tool.schema.model_fields for tool in agent_tools.TOOLS.values()))
+    assert fields == numbers | strings | redacted
+    args = {key: 8 for key in numbers} | {key: "电机控制" for key in strings} | {key: "学生原文" for key in redacted}
+    saved = chat_api._safe_arguments(args)
+    assert set(saved) == fields
+    assert saved["query"] == "电机控制" and saved["criterion_offset"] == 8
+    assert saved["comment"] == saved["reason"] == "[文本已省略]"
+    assert "学生原文" not in json.dumps(saved, ensure_ascii=False)
+    assert chat_api._safe_arguments({"api_key": "secret"}) == {"omitted_fields": 1}
+
+
+def test_identical_tool_calls_are_skipped_but_distinct_pages_and_queries_run(session_factory, monkeypatch):
+    requested = [
+        ("get_scores", {"batch_id": 3, "project_id": 1}),
+        ("get_scores", {"batch_id": 3, "project_id": 1, "project_offset": 0, "criterion_offset": 0}),
+        ("get_scores", {"batch_id": 3, "project_id": 1, "criterion_offset": 6}),
+        ("search_project_material", {"project_id": 1, "query": "电机控制"}),
+        ("search_project_material", {"query": "电机控制", "project_id": 1}),
+        ("search_project_material", {"project_id": 1, "query": "视觉方案"}),
+    ]
+    class FakeClient:
+        def tool_call(self, messages, _tools):
+            if any(message["role"] == "tool" for message in messages):
+                return {"role": "assistant", "content": "查询完成", "tool_calls": []}
+            return {"role": "assistant", "content": None, "tool_calls": [
+                {"id": f"call-{index}", "type": "function",
+                 "function": {"name": name, "arguments": json.dumps(args, ensure_ascii=False)}}
+                for index, (name, args) in enumerate(requested)]}
+    executed = []
+    def fake_execute(_db, _conversation, name, arguments, _text):
+        executed.append((name, arguments))
+        return {"found": True, "citations": []} if name.startswith("search_") else {
+            "count": 1, "results": [], "project_offset": arguments.get("project_offset", 0),
+            "criterion_offset": arguments.get("criterion_offset", 0)}
+    monkeypatch.setattr(chat_api, "client_for_chat", lambda _db: FakeClient())
+    monkeypatch.setattr(chat_api, "execute", fake_execute)
+    def override_db():
+        with session_factory() as session:
+            yield session
+    app.dependency_overrides[get_db] = override_db
+    try:
+        client = TestClient(app)
+        created = client.post("/api/conversations", json={"title": "查重"}).json()
+        with client.stream("POST", f"/api/conversations/{created['id']}/messages", json={"content": "查询"}) as response:
+            body = "".join(response.iter_text())
+        assert "event: done" in body
+        assert [(name, args.get("criterion_offset", 0), args.get("query")) for name, args in executed] == [
+            ("get_scores", 0, None), ("get_scores", 6, None),
+            ("search_project_material", 0, "电机控制"), ("search_project_material", 0, "视觉方案")]
+        restored = client.get(f"/api/conversations/{created['id']}").json()
+        calls = restored["messages"][1]["tool_calls"]
+        assert [call["status"] for call in calls] == ["completed", "skipped", "completed", "completed", "skipped", "completed"]
+        assert calls[0]["arguments"]["criterion_offset"] == 0
+        assert calls[2]["arguments"]["criterion_offset"] == 6
+        assert calls[3]["arguments"]["query"] == "电机控制"
+        assert calls[4]["result"]["previous_call_id"] == calls[3]["id"]
+        assert restored["runs"][0]["tool_calls"] == calls
+    finally:
+        app.dependency_overrides.clear()
+
+
 def test_failed_tool_calls_count_toward_limit(monkeypatch):
     class RepeatingClient:
         def tool_call(self, messages, tools):

backend/tests/test_chat_sessions.py

@@ -162,10 +162,12 @@ def test_background_runs_survive_no_stream_and_isolate_parallel_events(session_f
         app.dependency_overrides.clear()
 
 
-def test_tool_record_redacts_text_and_secrets():
-    saved = chat_api._safe_arguments({"project_id": 2, "query": "学生原文", "api_key": "secret", "comment": "敏感评语"})
+def test_tool_record_keeps_bounded_query_but_redacts_review_text_and_secrets():
+    saved = chat_api._safe_arguments({"project_id": 2, "query": "电机控制", "api_key": "secret", "comment": "敏感评语"})
     assert saved["project_id"] == 2
-    assert "学生原文" not in str(saved) and "secret" not in str(saved) and "敏感评语" not in str(saved)
+    assert saved["query"] == "电机控制"
+    assert "secret" not in str(saved) and "敏感评语" not in str(saved)
+    assert len(chat_api._safe_arguments({"query": "a" * 500})["query"]) == 300
     assert "学生原文" not in chat_api._result_summary({"found": True, "citations": [{"quote": "学生原文"}]})
     assert "学生原文" not in str(chat_api._safe_result({"citations": [{"quote": "学生原文"}]}))
     search = chat_api._safe_result({"found": True, "citations": [{"title": "报告.pdf", "page": 48,
@@ -180,7 +182,7 @@ def test_late_citations_and_search_snippets_survive_restoration(session_factory,
             if not any(message['role'] == 'tool' for message in messages):
                 return {"role": "assistant", "content": None, "tool_calls": [
                     {"id": f"find-{index}", "type": "function", "function": {"name": "search_project_material",
-                     "arguments": '{"project_id": 1, "query": "检索原文"}'}} for index in range(5)]}
+                     "arguments": f'{{"project_id": 1, "query": "检索原文{index}"}}'}} for index in range(5)]}
             return {"role": "assistant", "content": "综合报告第48页给出改进方向。", "tool_calls": []}
 
     count = 0