use thiserror::Error;
#[derive(Debug, Error)]
pub enum KernelError {
#[error("I/O error: {0}")]
Io(#[from] std::io::Error),
#[error("JSON error: {0}")]
Json(#[from] serde_json::Error),
#[error("integrity error at ledger sequence {seq}: {message}")]
Integrity { seq: u64, message: String },
#[error("invalid input: {0}")]
Invalid(String),
#[error("trace not found: {0}")]
NotFound(String),
#[error("decision engine error: {0}")]
Engine(String),
}
pub type Result<T> = std::result::Result<T, KernelError>;