Use when working with Orion project skills, especially Rust crates under orion-crates such as orion-error and orion-variate. This collection routes to nested Orion-specific skills for structured error handling, variable/config modeling, common crate workflows, and source-accurate implementation guidance.
Use when working with the Rust crate orion-error: adopting it in services, defining OrionError enums, choosing UnifiedReason categories, adding StructError context, using ToStructError/SourceErr/ConvErr correctly, leveraging transparent UnifiedReason delegate constructors, integrating report/protocol/interop APIs, or fixing stale 0.6/0.7-era orion-error examples.
Use when working with the Rust crate orion-variate: variable/value modeling, ValueType parsing and serialization, case-insensitive ValueDict/OriginDict usage, environment placeholder expansion with EnvEvaluable/EnvChecker, VarDefinition/VarCollection mutability, CwdGuard project directory helpers, and source-accurate API migration from older names.