feat: 完善文档中心与报销申请交互及侧边栏重构

后端优化编排器报销查询和本体检测精度，增强报销单草稿保
存和附件回填逻辑，前端重构侧边栏组件支持折叠和图标导
航，完善文档中心状态筛选和详情提示，报销创建和审批详情
页优化会话管理和费用明细交互，新增助手应用服务和预设动
作工具函数，补充单元测试覆盖。

server/tests/test_user_agent_service.py

@@ -29,6 +29,41 @@ def build_session_factory() -> sessionmaker[Session]:
     return sessionmaker(bind=engine, autoflush=False, autocommit=False)
 
 
+def build_application_user_agent_response(
+    db: Session,
+    message: str,
+    *,
+    history: list[dict[str, object]] | None = None,
+    context_overrides: dict[str, object] | None = None,
+):
+    context_json = {
+        "session_type": "application",
+        "entry_source": "application",
+        "attachment_count": 0,
+    }
+    if context_overrides:
+        context_json.update(context_overrides)
+    if history is not None:
+        context_json["conversation_history"] = history
+    ontology = SemanticOntologyService(db).parse(
+        OntologyParseRequest(
+            query=message,
+            user_id="pytest",
+            context_json=context_json,
+        )
+    )
+    return UserAgentService(db).respond(
+        UserAgentRequest(
+            run_id=ontology.run_id,
+            user_id="pytest",
+            message=message,
+            ontology=ontology,
+            context_json=context_json,
+            tool_payload={"clarification_required": ontology.clarification_required},
+        )
+    )
+
+
 def test_user_agent_query_returns_readable_answer_and_actions() -> None:
     session_factory = build_session_factory()
     with session_factory() as db:
@@ -137,6 +172,216 @@ def test_user_agent_knowledge_prompt_enforces_knowledge_boundary() -> None:
         assert '"knowledge_answer_evidence": []' in messages[1]["content"]
 
 
+def test_user_agent_application_context_uses_application_language() -> None:
+    session_factory = build_session_factory()
+    message = (
+        "发生时间：2026-05-25\n"
+        "地点：上海\n"
+        "事由：支持上海国网服务器部署\n"
+        "天数：3天"
+    )
+    context_json = {
+        "session_type": "application",
+        "entry_source": "application",
+        "attachment_count": 0,
+    }
+    with session_factory() as db:
+        ontology = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query=message,
+                user_id="pytest",
+                context_json=context_json,
+            )
+        )
+        response = UserAgentService(db).respond(
+            UserAgentRequest(
+                run_id=ontology.run_id,
+                user_id="pytest",
+                message=message,
+                ontology=ontology,
+                context_json=context_json,
+                tool_payload={"clarification_required": True},
+            )
+        )
+
+        assert "费用申请" in response.answer
+        assert "| 字段 | 内容 |" in response.answer
+        assert "| 发生时间 | 2026-05-25 至 2026-05-28 |" in response.answer
+        assert "支持上海国网服务器部署" in response.answer
+        assert "当前还需要补充：出行方式、预计金额/预算" in response.answer
+        assert "请先在下面选择报销场景" not in response.answer
+        assert response.review_payload is None
+        assert [item.label for item in response.suggested_actions] == ["一次性补充申请信息"]
+        assert response.suggested_actions[0].payload["prompt_prefill"] == "出行方式：\n预计总费用："
+
+
+def test_user_agent_application_infers_natural_reason_and_expands_single_date() -> None:
+    session_factory = build_session_factory()
+    message = "发生时间：2026-05-25\n去上海出差3天，支撑上海国网服务器部署"
+    with session_factory() as db:
+        response = build_application_user_agent_response(db, message)
+
+        assert "| 发生时间 | 2026-05-25 至 2026-05-28 |" in response.answer
+        assert "| 地点 | 上海 |" in response.answer
+        assert "| 事由 | 支撑上海国网服务器部署 |" in response.answer
+        assert "当前还需要先补充：申请事由" not in response.answer
+        assert "当前还需要补充：出行方式、预计金额/预算" in response.answer
+        assert [item.label for item in response.suggested_actions] == ["一次性补充申请信息"]
+
+
+def test_user_agent_application_uses_selected_time_and_natural_language_fields() -> None:
+    session_factory = build_session_factory()
+    message = "出差上海，支撑国网服务器上线部署"
+    context_json = {
+        "session_type": "application",
+        "entry_source": "application",
+        "business_time_context": {
+            "mode": "single",
+            "start_date": "2026-05-25",
+            "end_date": "2026-05-25",
+            "display_value": "2026-05-25",
+        },
+    }
+    with session_factory() as db:
+        ontology = SemanticOntologyService(db).parse(
+            OntologyParseRequest(
+                query=message,
+                user_id="pytest",
+                context_json=context_json,
+            )
+        )
+        response = UserAgentService(db).respond(
+            UserAgentRequest(
+                run_id=ontology.run_id,
+                user_id="pytest",
+                message=message,
+                ontology=ontology,
+                context_json=context_json,
+                tool_payload={"clarification_required": True},
+            )
+        )
+
+        assert "| 发生时间 | 2026-05-25 |" in response.answer
+        assert "| 地点 | 上海 |" in response.answer
+        assert "| 事由 | 支撑国网服务器上线部署 |" in response.answer
+        assert "当前还需要补充：出行方式、预计金额/预算" in response.answer
+        assert [item.label for item in response.suggested_actions] == ["一次性补充申请信息"]
+        assert response.suggested_actions[0].action_type == "prefill_composer"
+        assert response.suggested_actions[0].payload["prompt_prefill"] == "出行方式：\n预计总费用："
+
+
+def test_user_agent_application_asks_amount_after_transport_choice() -> None:
+    session_factory = build_session_factory()
+    initial_message = (
+        "发生时间：2026-05-25\n"
+        "地点：上海\n"
+        "事由：支持上海国网服务器部署\n"
+        "天数：3天"
+    )
+    with session_factory() as db:
+        response = build_application_user_agent_response(
+            db,
+            "飞机",
+            history=[{"role": "user", "content": initial_message}],
+        )
+
+        assert "| 出行方式 | 飞机 |" in response.answer
+        assert "当前还需要补充：预计金额/预算" in response.answer
+        assert [item.label for item in response.suggested_actions] == ["一次性补充申请信息"]
+        assert response.suggested_actions[0].action_type == "prefill_composer"
+        assert response.suggested_actions[0].payload["prompt_prefill"] == "预计总费用："
+
+
+def test_user_agent_application_missing_base_actions_prefill_composer() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        response = build_application_user_agent_response(
+            db,
+            "地点：上海\n事由：支撑国网服务器部署\n天数：3天",
+        )
+
+        assert "当前还需要补充：发生时间、出行方式、预计金额/预算" in response.answer
+        assert [item.label for item in response.suggested_actions] == ["一次性补充申请信息"]
+        assert response.suggested_actions[0].action_type == "prefill_composer"
+        assert response.suggested_actions[0].payload["prompt_prefill"] == "申请时间段：\n出行方式：\n预计总费用："
+
+
+def test_user_agent_application_builds_preview_when_amount_is_ready() -> None:
+    session_factory = build_session_factory()
+    initial_message = (
+        "发生时间：2026-05-25\n"
+        "地点：上海\n"
+        "事由：支持上海国网服务器部署\n"
+        "天数：3天"
+    )
+    with session_factory() as db:
+        response = build_application_user_agent_response(
+            db,
+            "预计总费用：12000元",
+            history=[
+                {"role": "user", "content": initial_message},
+                {"role": "user", "content": "飞机"},
+            ],
+        )
+
+        assert "这是模拟的费用申请结果" in response.answer
+        assert "| 字段 | 内容 |" in response.answer
+        assert "| 事由 | 支持上海国网服务器部署 |" in response.answer
+        assert "| 出行方式 | 飞机 |" in response.answer
+        assert "| 预计总费用 | 12000元 |" in response.answer
+        assert "请核对上述信息无误" in response.answer
+        assert "[确认](#application-submit)" in response.answer
+        assert response.requires_confirmation is True
+        assert response.suggested_actions == []
+
+
+def test_user_agent_application_submit_enters_leader_review() -> None:
+    session_factory = build_session_factory()
+    initial_message = (
+        "发生时间：2026-05-25\n"
+        "地点：上海\n"
+        "事由：支持上海国网服务器部署\n"
+        "天数：3天"
+    )
+    preview_answer = (
+        "这是模拟的费用申请结果，请核对：\n"
+        "| 字段 | 内容 |\n"
+        "| --- | --- |\n"
+        "| 申请类型 | 差旅费用申请 |\n"
+        "| 发生时间 | 2026-05-25 |\n"
+        "| 地点 | 上海 |\n"
+        "| 事由 | 支持上海国网服务器部署 |\n"
+        "| 天数 | 3天 |\n"
+        "| 出行方式 | 飞机 |\n"
+        "| 预计总费用 | 12000元 |\n\n"
+        "请核对上述信息无误，确认无误后 [确认](#application-submit) 提交至审批流程。"
+    )
+    with session_factory() as db:
+        response = build_application_user_agent_response(
+            db,
+            "确认提交",
+            context_overrides={"manager_name": "陈硕"},
+            history=[
+                {"role": "user", "content": initial_message},
+                {"role": "user", "content": "飞机"},
+                {"role": "user", "content": "预计总费用：12000元"},
+                {"role": "assistant", "content": preview_answer},
+            ],
+        )
+
+        assert "当前操作已完成，单据已经推送给 陈硕 进行审核，请耐心等待" in response.answer
+        assert "当前状态：陈硕审核中" in response.answer
+        assert "预算占用参考" in response.answer
+        assert "APP-20260525-" in response.answer
+        assert response.suggested_actions == []
+        claim = db.query(ExpenseClaim).filter(ExpenseClaim.claim_no.like("APP-20260525-%")).one()
+        assert claim.status == "submitted"
+        assert claim.approval_stage == "直属领导审批"
+        assert claim.expense_type == "travel_application"
+        assert claim.amount == Decimal("12000.00")
+        assert claim.employee_name == "pytest"
+
+
 def test_user_agent_knowledge_fallback_is_honest_and_personalized() -> None:
     session_factory = build_session_factory()
     with session_factory() as db: