Agent Skills: ring:fixing-lint

Fixing lint to a clean state: runs the linter, groups reported issues into independent streams, and dispatches one parallel fixer agent per stream (ring:backend-go for Go, ring:general-purpose otherwise), iterating until clean. Use when a codebase has lint errors across multiple files. Skip for a single error (fix directly), already-passing lint, or view-only requests; security lints are reported, not auto-fixed.