no documentation for solid start --config-path or --config-file

The output of solid start --help doesn't show any help description for the following items:

--config-path [value]
--config-file [value]

What's more, the output of solid init doesn't make this very clear either:

? Path to the config directory (for example: /etc/solid-server) ./myconf
? Path to the config file (for example: ./config.json) foo.json

When I see these items, I ask the following questions:

1. should the config file be stored in the config directory, or are these different things? I expected that the config file would be written as [config_dir]/[config_file], but it isn't. Is the config directory something for startup, or runtime configuration?
2. if I specify foo.json as a config file, why does solid init still write it to ./config.json?
3. I can specify a config file on the command line with solid start --config-file. If it reads this config file, what is the behaviour of the configFile option in this json file? Is it used at all (to reload a secondary config file?) or is it ignored?

先執行 solid start --help 和 solid init，然後追蹤 --config-path、--config-file 和 configFile 這些進入點，以確認它們的行為。更新相關的 CLI 說明或文件，明確說明設定目錄、設定檔和產生的 ./config.json 之間的關係，並使用這兩個命令驗證文件中描述的行為。