feat: 新增风险图谱算法与系统仪表盘及操作反馈体系

后端新增风险图谱算法模块、风险观察与反馈服务、规则 DSL
校验器和可解释性引擎，完善系统仪表盘和财务仪表盘统计，
优化 agent 运行和编排执行链路，清理旧开发文档，前端新增
系统趋势、负载热力图等多种仪表盘图表组件，完善操作反馈
对话框和工作台日期选择器，优化报销创建和审批详情交互，
补充单元测试覆盖。

server/tests/test_user_agent_service.py

@@ -209,7 +209,7 @@ def test_user_agent_application_context_uses_application_language() -> None:
 
         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 "| 发生时间 | 2026-05-25 至 2026-05-27 |" 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、用户预估费用" in response.answer
         assert "请先在下面选择报销场景" not in response.answer
@@ -224,7 +224,7 @@ def test_user_agent_application_infers_natural_reason_and_expands_single_date()
     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 "| 发生时间 | 2026-05-25 至 2026-05-27 |" in response.answer
         assert "| 地点 | 上海市 |" 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
@@ -250,7 +250,7 @@ def test_user_agent_application_normalizes_location_to_region_city() -> None:
         yili_response = build_application_user_agent_response(db, yili_message)
         beijing_response = build_application_user_agent_response(db, beijing_message)
 
-        assert "| 发生时间 | 2026-05-25 至 2026-05-28 |" in yili_response.answer
+        assert "| 发生时间 | 2026-05-25 至 2026-05-27 |" in yili_response.answer
         assert "| 地点 | 新疆，伊犁 |" in yili_response.answer
         assert "| 事由 | 支撑新疆电力仿生产部署 |" in yili_response.answer
         assert "伊犁出差" not in yili_response.answer
@@ -328,10 +328,27 @@ def test_user_agent_application_missing_base_actions_prefill_composer() -> None:
             "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、用户预估费用" in response.answer
+        assert "当前还需要补充：出行方式、用户预估费用" 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用户预估费用："
+        assert response.suggested_actions[0].payload["prompt_prefill"] == "出行方式：\n用户预估费用："
+
+
+def test_user_agent_application_precomputes_time_from_today_and_days() -> None:
+    session_factory = build_session_factory()
+    with session_factory() as db:
+        response = build_application_user_agent_response(
+            db,
+            "去北京出差3天，支撑国网仿生产环境部署，飞机，预计费用12000元",
+            context_overrides={
+                "client_now_iso": "2026-05-28T16:30:00.000Z",
+                "client_timezone_offset_minutes": -480,
+            },
+        )
+
+        assert "这是模拟的费用申请结果" in response.answer
+        assert "| 发生时间 | 2026-05-29 至 2026-05-31 |" in response.answer
+        assert response.requires_confirmation is True
 
 
 def test_user_agent_application_builds_preview_when_amount_is_ready() -> None:
@@ -397,9 +414,10 @@ def test_user_agent_application_submit_enters_leader_review() -> None:
             ],
         )
 
-        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 "申请单据已生成，并已进入审批流程" in response.answer
+        assert "系统已推送给 陈硕 审核，当前节点：陈硕审核中" in response.answer
+        assert "下方是简要单据信息" in response.answer
+        assert "申请信息：" not in response.answer
         assert re.search(r"AP-\d{14}-[A-HJ-NP-Z2-9]{8}", response.answer)
         assert response.suggested_actions == []
         claim = db.query(ExpenseClaim).filter(ExpenseClaim.claim_no.like("AP-%")).one()