cardinal-config

Configuration loader and validator for the gateway. It uses the config crate to merge sources, then maps them into strongly typed builders.

Features

• Load from multiple TOML files and CARDINAL__... environment variables
• Validate server address formats, whitelisted methods, and plugin references
• Emit descriptive ConfigErrors when validation fails

API sketch

let paths = vec!["config/base.toml".into(), "config/local.toml".into()];
let cfg = cardinal_config::load_config(&paths)?;
assert_eq!(cfg.server.address, "127.0.0.1:1704");

CardinalConfigBuilder and friends remain available if you need to construct configs programmatically (e.g., tests or higher-level control planes).