Module errors 

Error hierarchy shared across the workspace.

Pattern:

• Each crate defines its own domain error enum via thiserror.
• Crate-level errors implement From into CommonError only where they need to surface at public boundaries.
• Never use anyhow inside libraries — reserve it for main.rs.

Enums

CommonError

Top-level error type for the arknet-common crate.

Type Aliases

Result

Protocol-wide result type.