use toml::Value as TomlValue;pub(crate) fn default_empty_table() -> TomlValue {    TomlValue::Table(Default::default())}pub fn build_cli_overrides_layer(cli_overrides: &[(String, TomlValue)]) -> TomlValue {    let mut root = default_empty_table();    for (path, value) in cli_overrides {        apply_toml_override(&mut root, path, value.clone());    }    root}/// Apply a single dotted-path override onto a TOML value.fn apply_toml_override(root: &mut TomlValue, path: &str, value: TomlValue) {    use toml::value::Table;    let mut current = root;    let mut segments_iter = path.split('.').peekable();    while let Some(segment) = segments_iter.next() {        let is_last = segments_iter.peek().is_none();        if is_last {            match current {                TomlValue::Table(table) => {                    table.insert(segment.to_string(), value);                }                _ => {                    let mut table = Table::new();                    table.insert(segment.to_string(), value);                    *current = TomlValue::Table(table);                }            }            return;        }        match current {            TomlValue::Table(table) => {                current = table                    .entry(segment.to_string())                    .or_insert_with(|| TomlValue::Table(Table::new()));            }            _ => {                *current = TomlValue::Table(Table::new());                if let TomlValue::Table(tbl) = current {                    current = tbl                        .entry(segment.to_string())                        .or_insert_with(|| TomlValue::Table(Table::new()));                }            }        }    }}