docs: add upage usage instructions document

.env.example

@@ -93,7 +93,7 @@ PERPLEXITY_API_KEY=
 # {"region": "us-east-1", "accessKeyId": "yourAccessKeyId", "secretAccessKey": "yourSecretAccessKey", "sessionToken": "yourSessionToken"}
 AWS_BEDROCK_CONFIG=
 
-# 是否开启文件日志
+# Whether to enable file logging
 USAGE_LOG_FILE=false
 # Include this environment variable if you want more logging for debugging locally
 LOG_LEVEL=debug
@@ -109,34 +109,34 @@ WEATHER_API_KEY=
 # Default LLM provider to use (e.g.,OpenAILike,OpenAI, Anthropic, Mistral)
 LLM_DEFAULT_PROVIDER=
 
-# 生成页面所使用的 MODEL（应该与 LLM_DEFAULT_PROVIDER 相对应）
+# The MODEL used to generate the page (should correspond to LLM_DEFAULT_PROVIDER)
 LLM_DEFAULT_MODEL=
 
-# 用于辅助页面生成所使用的 MODEL，例如总结和预分析。（应该与 LLM_DEFAULT_PROVIDER 相对应）
+# Used for the MODEL assisting page generation, such as summary and pre-analysis. (Should correspond to LLM_DEFAULT_PROVIDER.)
 LLM_MINOR_MODEL=
 
 # Comma-separated list of enabled providers (empty means all providers)
 # Example: OpenAILike,OpenAI,Anthropic,Mistral
 LLM_ENABLED_PROVIDERS=
 
-# Logto 集成所需环境变量
-# Logto 地址
-LOGTO_ENDPOINT=
-# Logto 应用 ID
-LOGTO_APP_ID=
-# Logto 应用密钥
-LOGTO_APP_SECRET=
-# 应用基础 URL，根据实际部署环境修改
-LOGTO_BASE_URL=http://localhost:5173
-# 随机任意的 36 位字符串，用于加密 Logto 的 cookie。
-LOGTO_COOKIE_SECRET=
-# 是否在开发环境中启用 Logto 认证，设置为 false 则在开发环境不强制认证
+# Logto integration required environment variables
+# Whether to enable Logto authentication
 LOGTO_ENABLE=false
-# 运行环境，与 NODE_ENV 有所不同， NODE_ENV 在打包时就已确定，而此变量用于某些功能在不同环境下的开放
+# Logto Address
+LOGTO_ENDPOINT=
+# Logto Application ID
+LOGTO_APP_ID=
+# Logto Application secret
+LOGTO_APP_SECRET=
+# Application base URL, modify according to the actual deployment environment
+LOGTO_BASE_URL=http://localhost:5173
+# A random 36-character string used for encrypting Logto cookies.
+LOGTO_COOKIE_SECRET=
+
+# Runtime environment, which differs from NODE_ENV. NODE_ENV is determined at build time, whereas this variable is used to enable certain features in different environments.
 # development | production | test
 OPERATING_ENV=production
-
-# 资源文件存储位置
+# Resource file storage location
 STORAGE_DIR=/public/uploads
-# 附件上传的最大大小
+# Maximum size for attachment upload
 MAX_UPLOAD_SIZE_MB=5