feat: Add new PI agent features and update dependencies (#6762)

projects/app/.env.template

@@ -192,6 +192,8 @@ MAX_HTML_TRANSFORM_CHARS=
 # ==================== Beta features ====================
 # 是否展示 Skill 功能入口
 SHOW_SKILL=false
+# Agent 引擎选择：default（Plan+Step 编排）| pi（pi-agent-core 引擎）
+AGENT_ENGINE=default
 
 # ==================== 对话日志推送（可选） ====================
 # 日志服务地址

projects/app/next.config.ts

@@ -176,7 +176,9 @@ const nextConfig: NextConfig = {
     'bullmq',
     '@zilliz/milvus2-sdk-node',
     'tiktoken',
-    '@opentelemetry/api-logs'
+    '@opentelemetry/api-logs',
+    '@mariozechner/pi-agent-core',
+    '@mariozechner/pi-ai'
   ],
   // 优化大库的 barrel exports tree-shaking
   experimental: {