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。

web/tests/expense-application-ontology.test.mjs

@@ -29,7 +29,7 @@ test('expense application fields use labeled reason and filter resolved missing
     { name: '申请员工', departmentName: '交付部' }
   )
 
-  assert.equal(fields.timeRange, '2026-05-25 至 2026-05-28')
+  assert.equal(fields.timeRange, '2026-05-25 至 2026-05-27')
   assert.equal(fields.location, '上海')
   assert.equal(fields.reason, '支撑国网服务器部署')
   assert.deepEqual(
@@ -65,8 +65,8 @@ test('expense application expands a single selected date with natural days', ()
     '去上海出差3天，支撑国网服务器部署'
   ].join('\n')
 
-  assert.equal(expandApplicationTimeWithDays('2026-05-25', 3), '2026-05-25 至 2026-05-28')
-  assert.equal(resolveApplicationTimeRange({ time_range: {} }, prompt), '2026-05-25 至 2026-05-28')
+  assert.equal(expandApplicationTimeWithDays('2026-05-25', 3), '2026-05-25 至 2026-05-27')
+  assert.equal(resolveApplicationTimeRange({ time_range: {} }, prompt), '2026-05-25 至 2026-05-27')
 })
 
 test('expense application keeps explicit time range before applying days', () => {