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📝 add Chinese examples and extension docs
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# 文本格式与样式
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格式化只改变呈现,记录本身的 level、target、message 和 fields 不变。面向人时使用文本输出;由其他系统解析时使用 JSON。
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## 自定义文本形状
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```moonbit
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let logger = @log.build_logger(
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@log.text_console(
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min_level=@log.Level::Info,
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target="service",
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text_formatter=@log.TextFormatterConfig::new(
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show_timestamp=false,
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field_separator=",",
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template="[{level}] {target} {message} :: {fields}",
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),
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),
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)
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logger.info("ready", fields=[@log.field("port", "8080")])
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```
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模板控制可见顺序。fields 应保持独立于 message,以便不同 Sink 一致渲染。
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## 添加命名样式
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```moonbit
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let formatter = @log.text_formatter(
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show_timestamp=false,
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color_mode=@log.ColorMode::Always,
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).with_style_tags(
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@log.default_style_tag_registry()
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.set_tag("accent", fg=Some("#4cc9f0"), bold=true),
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)
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```
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样式标签是终端呈现元数据,不应作为唯一的业务或运维语义;语义仍应保存在 level、target 与 fields 中。
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## 英文 API
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- [`text_console(...)`](../../api/text-console.md)
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- [`TextFormatterConfig`](../../api/text-formatter-config.md)
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- [`text_formatter(...)`](../../api/text-formatter.md)
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- [`ColorMode`](../../api/color-mode.md)
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