Agent Skills: ring:reviewing-code

Reviewing code by dispatching the default reviewer subagents in parallel (plus conditional specialists for lib-observability, lib-systemplane, or lib-streaming when the diff triggers them), then aggregating findings by severity into a report. Use as Gate 8 of ring:running-dev-cycle at epic cadence over the cumulative diff, or before merging. Report-only. Skip for a single-command Go pre-merge verdict (use ring:verifying-code).