Function parse_string_array_config_value 

pub fn parse_string_array_config_value(
    value: &str,
    key: &str,
) -> Result<Vec<String>>

Parses a JSON array of strings stored in a configuration value.

Product crates can use this before applying domain-specific normalization such as URL canonicalization, domain lower-casing, allow-list filtering, or duplicate removal. The key is only used to produce a precise validation error.