feat: BossAi 老板AI助手初始版本

包含功能:
- 法务参谋/经营决策/生活助理/情绪中心四大AI对话模块
- 专家咨询系统(用户选定→专家确认→咨询→回复→评价)
- 角色登录(用户/专家/管理员)+ ProtectedRoute 权限控制
- 管理后台(用户管理/专家管理/AI使用统计/专家活跃度)
- 专家工作台(待确认服务/待回复咨询/已回复咨询/服务中用户)
- 服务关系取消(用户和专家均可取消,需自己确认)
- 全页面移动端响应式适配
- 知识库RAG检索
- 对话历史(普通/保密模式)

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

web/public/manifest.json

@@ -0,0 +1,27 @@
+{
+  "name": "BossAi - 老板智能助手",
+  "short_name": "BossAi",
+  "description": "隐私优先的企业法律与经营智能助手",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#f8f9fb",
+  "theme_color": "#0f172a",
+  "orientation": "any",
+  "icons": [
+    {
+      "src": "/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any maskable"
+    },
+    {
+      "src": "/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any maskable"
+    }
+  ],
+  "categories": ["business", "productivity"],
+  "lang": "zh-CN",
+  "dir": "ltr"
+}

web/public/sw.js

@@ -0,0 +1,90 @@
+// BossAi Service Worker - 离线访问支持
+// 策略:API 请求 network-first,静态资源 cache-first
+
+const CACHE_VERSION = 'bossai-v1'
+const STATIC_CACHE = `${CACHE_VERSION}-static`
+const API_CACHE = `${CACHE_VERSION}-api`
+
+// 预缓存静态资源
+const PRECACHE_URLS = [
+  '/',
+  '/index.html',
+  '/manifest.json',
+]
+
+// 安装:预缓存
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(STATIC_CACHE).then((cache) => cache.addAll(PRECACHE_URLS))
+      .then(() => self.skipWaiting())
+  )
+})
+
+// 激活:清理旧缓存
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) =>
+      Promise.all(
+        keys
+          .filter((key) => !key.startsWith(CACHE_VERSION))
+          .map((key) => caches.delete(key))
+      )
+    ).then(() => self.clients.claim())
+  )
+})
+
+// 请求拦截
+self.addEventListener('fetch', (event) => {
+  const { request } = event
+  const url = new URL(request.url)
+
+  // 只处理同源请求
+  if (url.origin !== self.location.origin) return
+
+  // API 请求:network-first,失败时返回缓存
+  if (url.pathname.startsWith('/api/')) {
+    event.respondWith(
+      fetch(request)
+        .then((response) => {
+          // 缓存成功的 GET 响应
+          if (request.method === 'GET' && response.ok) {
+            const clone = response.clone()
+            caches.open(API_CACHE).then((cache) => cache.put(request, clone))
+          }
+          return response
+        })
+        .catch(() => {
+          // 网络失败,尝试缓存
+          if (request.method === 'GET') {
+            return caches.match(request).then(
+              (cached) => cached || new Response(
+                JSON.stringify({ detail: '离线模式,数据不可用' }),
+                { status: 503, headers: { 'Content-Type': 'application/json' } }
+              )
+            )
+          }
+          // 非 GET 请求离线时返回错误
+          return new Response(
+            JSON.stringify({ detail: '离线模式,操作不可用' }),
+            { status: 503, headers: { 'Content-Type': 'application/json' } }
+          )
+        })
+    )
+    return
+  }
+
+  // 静态资源:cache-first,失败时网络
+  event.respondWith(
+    caches.match(request).then((cached) => {
+      if (cached) return cached
+      return fetch(request).then((response) => {
+        // 缓存成功的响应
+        if (response.ok && request.method === 'GET') {
+          const clone = response.clone()
+          caches.open(STATIC_CACHE).then((cache) => cache.put(request, clone))
+        }
+        return response
+      })
+    })
+  )
+})