feat: 初始化 B2B AI Shopping Assistant 项目

- 配置 Docker Compose 多服务编排
- 实现 Chatwoot + Agent 集成
- 配置 Strapi MCP 知识库
- 支持 7 种语言的 FAQ 系统
- 实现 LangGraph AI 工作流

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

agent/config.py

@@ -0,0 +1,60 @@
+"""
+Configuration management for B2B Shopping AI Assistant
+"""
+from typing import Optional
+from pydantic_settings import BaseSettings
+from pydantic import Field
+
+
+class Settings(BaseSettings):
+    """Application settings loaded from environment variables"""
+    
+    # ============ AI Model ============
+    zhipu_api_key: str = Field(..., description="ZhipuAI API Key")
+    zhipu_model: str = Field(default="glm-4", description="ZhipuAI Model name")
+    
+    # ============ Redis ============
+    redis_host: str = Field(default="localhost", description="Redis host")
+    redis_port: int = Field(default=6379, description="Redis port")
+    redis_password: Optional[str] = Field(default=None, description="Redis password")
+    redis_db: int = Field(default=0, description="Redis database number")
+    
+    # ============ Chatwoot ============
+    chatwoot_api_url: str = Field(..., description="Chatwoot API URL")
+    chatwoot_api_token: str = Field(..., description="Chatwoot API Token")
+    chatwoot_webhook_secret: Optional[str] = Field(default=None, description="Chatwoot Webhook Secret")
+    
+    # ============ Strapi CMS ============
+    strapi_api_url: str = Field(..., description="Strapi API URL")
+    strapi_api_token: str = Field(..., description="Strapi API Token")
+    
+    # ============ Hyperf API ============
+    hyperf_api_url: str = Field(..., description="Hyperf API URL")
+    hyperf_api_token: str = Field(..., description="Hyperf API Token")
+    
+    # ============ MCP Servers ============
+    strapi_mcp_url: str = Field(default="http://localhost:8001", description="Strapi MCP URL")
+    order_mcp_url: str = Field(default="http://localhost:8002", description="Order MCP URL")
+    aftersale_mcp_url: str = Field(default="http://localhost:8003", description="Aftersale MCP URL")
+    product_mcp_url: str = Field(default="http://localhost:8004", description="Product MCP URL")
+    
+    # ============ Application Config ============
+    log_level: str = Field(default="INFO", description="Log level")
+    max_conversation_steps: int = Field(default=10, description="Max steps in conversation")
+    conversation_timeout: int = Field(default=3600, description="Conversation timeout in seconds")
+    
+    class Config:
+        env_file = ".env"
+        env_file_encoding = "utf-8"
+        case_sensitive = False
+
+
+# Global settings instance
+settings = Settings()
+
+
+def get_redis_url() -> str:
+    """Get Redis connection URL"""
+    if settings.redis_password and settings.redis_password.strip():
+        return f"redis://:{settings.redis_password}@{settings.redis_host}:{settings.redis_port}/{settings.redis_db}"
+    return f"redis://{settings.redis_host}:{settings.redis_port}/{settings.redis_db}"