feat: add AI学习助手 agent (KG+RAG ideal) and renshenguo feishu bot

- Add AI学习助手 agent creation script with all 39 tools, 3-layer KG+RAG memory
- Add renshenguo (人参果) feishu bot integration (app_service + ws_handler)
- Register renshenguo WS client in main.py startup
- Add RENSHENGUO_APP_ID / RENSHENGUO_APP_SECRET / RENSHENGUO_AGENT_ID config
- Reorganize docs from root into docs/ subdirectories
- Move startup scripts to scripts/startup/
- Various backend optimizations and tool improvements

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/stores/agent.ts

@@ -41,10 +41,11 @@ export const useAgentStore = defineStore('agent', () => {
       if (options?.status) params.status = options.status
       if (options?.skip !== undefined) params.skip = options.skip
       if (options?.limit !== undefined) params.limit = options.limit
-      
+
       const response = await api.get('/api/v1/agents', { params })
       agents.value = response.data
-      return response.data
+      const total = parseInt(response.headers['x-total-count'] || '0', 10)
+      return { data: response.data, total }
     } finally {
       loading.value = false
     }

frontend/src/views/Agents.vue

@@ -791,13 +791,13 @@ const handleRefresh = async () => {
 // 加载Agent列表
 const loadAgents = async () => {
   try {
-    const agents = await agentStore.fetchAgents({
+    const result = await agentStore.fetchAgents({
       search: searchText.value || undefined,
       status: statusFilter.value || undefined,
       skip: (currentPage.value - 1) * pageSize.value,
       limit: pageSize.value
     })
-    total.value = agents.length
+    total.value = result.total
   } catch (error: any) {
     ElMessage.error(error.response?.data?.detail || '加载Agent列表失败')
   }