refactor: unify kubernetes_ table prefix, merge CI/CD models, LLM session support

- Rename container_clusters → kubernetes_clusters, container_topology_layouts → kubernetes_topology_layouts
- LLM: add session_id to chat history for multi-turn conversation support
- CI/CD: add pipeline_id, deploy_type, artifact_url, k8s_cluster_id to AppRelease
- Cleanup: remove deprecated playbook handler, simplify automation models
- Database: optimize auto-migrate model list
- Frontend: AIOps assistant improvements, api.ts updates

frontend/src/services/api.ts

@@ -892,6 +892,7 @@ export interface ChatResult {
 export interface ChatHistoryItem {
   id: number;
   user_id: number;
+  session_id: string;
   role: 'user' | 'assistant';
   content: string;
   model?: string;
@@ -905,15 +906,16 @@ export const aiApi = {
   saveConfig: (data: LLMConfigData) => http.put<LLMConfigData>('/aiops/llm-config', data),
   // 测试 LLM 连接（发送 ping）
   testConnection: () => http.post('/aiops/llm-config/test'),
-  // AI 对话（messages 含历史 + 当前用户消息）
-  chat: (messages: { role: 'user' | 'assistant'; content: string }[]) =>
-    http.post<ChatResult>('/aiops/chat', { messages }),
+  // AI 对话（messages 含历史 + 当前用户消息，session_id 区分多轮对话）
+  chat: (messages: { role: 'user' | 'assistant'; content: string }[], sessionId?: string) =>
+    http.post<ChatResult>('/aiops/chat', { messages, session_id: sessionId || '' }),
   // AI 流式对话（SSE）。逐块回调 onChunk，返回完整内容。错误抛出 Error。
   // 使用裸 fetch 绕过 http.ts（后者会 await json() 一次性消费） // Logan.Li
   chatStream: async (
     messages: { role: 'user' | 'assistant'; content: string }[],
     onChunk: (delta: string) => void,
     signal?: AbortSignal,
+    sessionId?: string,
   ): Promise<string> => {
     const token = useUserStore.getState().token;
     const res = await fetch('/api/v1/aiops/chat/stream', {
@@ -922,7 +924,7 @@ export const aiApi = {
         'Content-Type': 'application/json',
         ...(token ? { Authorization: `Bearer ${token}` } : {}),
       },
-      body: JSON.stringify({ messages }),
+      body: JSON.stringify({ messages, session_id: sessionId || '' }),
       signal,
     });
     if (res.status === 401) {
@@ -980,8 +982,11 @@ export const aiApi = {
     }
     return fullContent;
   },
-  // 获取当前用户对话历史（按时间正序，最近 100 条）
-  getHistory: () => http.get<{ list: ChatHistoryItem[]; total: number }>('/aiops/chat-history'),
+  // 获取当前用户对话历史（按 session_id 过滤，默认最新 session）
+  getHistory: (sessionId?: string) => {
+    const params = sessionId ? `?session_id=${encodeURIComponent(sessionId)}` : '';
+    return http.get<{ list: ChatHistoryItem[]; total: number }>(`/aiops/chat-history${params}`);
+  },
   // 清空当前用户对话历史
   clearHistory: () => http.delete('/aiops/chat-history'),
 };