feat: 增强知识库索引与设置页面模块化拆分

扩展知识库索引任务和 RAG 检索支持增量入库和文档去重，优
化本体检测和规则匹配精度，前端设置页面拆分为 LLM、邮件
和 Hermes 员工同步子面板并重构样式，新增日志详情组件和
知识入库日志模型，补充单元测试覆盖。

web/src/utils/hermesEmployeeSettingsModel.js

@@ -0,0 +1,150 @@
+/** 数字员工设置：面向管理员的简明任务列表（频率固定，仅可调执行时间） */
+export const HERMES_SIMPLE_TASKS = [
+  {
+    id: 'knowledgeAggregation',
+    label: '知识库同步',
+    hint: '同步制度文档与知识索引',
+    frequency: 'daily',
+    frequencyLabel: '每天'
+  },
+  {
+    id: 'ruleReviewDigest',
+    label: '规则待审提醒',
+    hint: '汇总待审规则并推送管理员',
+    frequency: 'daily',
+    frequencyLabel: '每天'
+  },
+  {
+    id: 'riskSummary',
+    label: '风险每日巡检',
+    hint: '扫描报销、付款等风险信号',
+    frequency: 'daily',
+    frequencyLabel: '每天'
+  },
+  {
+    id: 'archiveDigest',
+    label: '归档周报',
+    hint: '汇总已归档报销单',
+    frequency: 'weekly',
+    frequencyLabel: '每周一',
+    weekday: 1
+  },
+  {
+    id: 'dailyStats',
+    label: '日报统计',
+    hint: '生成昨日报销与审批数据',
+    frequency: 'daily',
+    frequencyLabel: '每天'
+  },
+  {
+    id: 'monthlyStats',
+    label: '月报统计',
+    hint: '每月 1 号生成上月汇总',
+    frequency: 'monthly',
+    frequencyLabel: '每月 1 日',
+    monthDay: 1
+  },
+  {
+    id: 'yearlyStats',
+    label: '年报统计',
+    hint: '每年 1 月 1 号生成上年汇总',
+    frequency: 'yearly',
+    frequencyLabel: '每年 1 月 1 日',
+    month: 1,
+    monthDay: 1
+  }
+]
+
+function buildDefaultSchedules() {
+  const defaults = {
+    knowledgeAggregation: { enabled: true, frequency: 'daily', time: '00:00', weekday: 1, monthDay: 1, month: 1 },
+    ruleReviewDigest: { enabled: true, frequency: 'daily', time: '18:00', weekday: 5, monthDay: 1, month: 1 },
+    riskSummary: { enabled: true, frequency: 'daily', time: '09:00', weekday: 1, monthDay: 1, month: 1 },
+    archiveDigest: { enabled: false, frequency: 'weekly', time: '10:30', weekday: 1, monthDay: 1, month: 1 },
+    dailyStats: { enabled: true, frequency: 'daily', time: '08:30', weekday: 1, monthDay: 1, month: 1 },
+    monthlyStats: { enabled: true, frequency: 'monthly', time: '09:00', weekday: 1, monthDay: 1, month: 1 },
+    yearlyStats: { enabled: false, frequency: 'yearly', time: '10:00', weekday: 1, monthDay: 1, month: 1 }
+  }
+
+  for (const task of HERMES_SIMPLE_TASKS) {
+    const schedule = defaults[task.id]
+    if (!schedule) {
+      continue
+    }
+    schedule.frequency = task.frequency
+    if (task.weekday != null) {
+      schedule.weekday = task.weekday
+    }
+    if (task.monthDay != null) {
+      schedule.monthDay = task.monthDay
+    }
+    if (task.month != null) {
+      schedule.month = task.month
+    }
+  }
+
+  return defaults
+}
+
+export function buildDefaultHermesEmployeeForm() {
+  return {
+    masterEnabled: true,
+    notifyOnFailure: true,
+    capabilities: {
+      knowledgeAggregation: true,
+      ruleReviewDigest: true,
+      riskSummary: true,
+      archiveDigest: false,
+      dailyStats: true,
+      monthlyStats: true,
+      yearlyStats: false
+    },
+    schedules: buildDefaultSchedules()
+  }
+}
+
+export function mergeHermesEmployeeForm(override = {}) {
+  const defaults = buildDefaultHermesEmployeeForm()
+  const schedules = { ...defaults.schedules }
+
+  for (const [key, value] of Object.entries(override?.schedules || {})) {
+    schedules[key] = { ...defaults.schedules[key], ...value }
+  }
+
+  for (const task of HERMES_SIMPLE_TASKS) {
+    if (schedules[task.id]) {
+      schedules[task.id].frequency = task.frequency
+      if (task.weekday != null) {
+        schedules[task.id].weekday = task.weekday
+      }
+      if (task.monthDay != null) {
+        schedules[task.id].monthDay = task.monthDay
+      }
+      if (task.month != null) {
+        schedules[task.id].month = task.month
+      }
+    }
+  }
+
+  return {
+    ...defaults,
+    ...override,
+    capabilities: {
+      ...defaults.capabilities,
+      ...(override?.capabilities || {})
+    },
+    schedules
+  }
+}
+
+export function isHermesTaskEnabled(form, taskId) {
+  return Boolean(form?.masterEnabled && form?.capabilities?.[taskId] && form?.schedules?.[taskId]?.enabled)
+}
+
+export function countEnabledHermesTasks(form) {
+  return HERMES_SIMPLE_TASKS.filter((task) => isHermesTaskEnabled(form, task.id)).length
+}
+
+export function isHermesEmployeeSettingsReady(form) {
+  return Boolean(!form?.masterEnabled || countEnabledHermesTasks(form) > 0)
+}