ring:using-lib-commons

Scope note (lib-observability v1.0.0): The observability layer — log, metrics, tracing, zap, assert, runtime (panic recovery), redaction, and OTel attribute constants — moved out of lib-commons into github.com/LerianStudio/lib-observability as of v1.0.0. lib-commons v5 keeps deprecated shims for back-compat, but this skill is no longer the canonical reference for those packages. For observability work, dispatch [[using-lib-observability]] (top-level) or its dedicated sub-skills [[using-tracing]] / [[using-runtime]] / [[using-assert]]. This skill now focuses on lib-commons's non-observability surface: lifecycle (commons.Launcher), outbox repository (writer side lives in [[using-lib-streaming]]), circuit breakers, tenant management, idempotency, security/TLS, database connections, messaging (RabbitMQ command queues; events go through [[using-lib-streaming]]), HTTP toolkit.

When to use

Sweep mode:

• "Sweep the codebase for lib-commons opportunities"
• "Find where we could use lib-commons instead of DIY"
• "Audit this service for lib-commons compliance"
• "Identify lib-commons migration opportunities"

Reference mode:

• Need to understand what lib-commons provides
• Looking for the right package/API for a task
• Setting up a new service that uses lib-commons
• Need correct constructor/initialization patterns
• Working with multi-tenancy (tenant-manager subsystem)
• Working with event-driven tenant discovery