Module errors_core 

Core error interfaces shared across the crate.

This module defines:

• ErrorSeverity: common severity levels
• UserFriendlyError: trait for multi-level messaging
• Result<T, E = Box<dyn std::error::Error + Send + Sync>>: lightweight alias for pure/core layers

The goal is to keep this module free of downstream dependencies so other modules can depend on it without creating cycles. Integration-specific mappings (e.g., HTTP/serde/logging) should live in higher layers.

Enums

ErrorSeverity

Error severity levels for proper categorization and handling.

Traits

UserFriendlyError

Trait providing user-friendly error messaging at multiple levels.

Type Aliases

Result

Lightweight result alias for core layers.