clean-rspec-output

Systematically eliminate unexpected output (warnings, stray puts/logs, deprecation notices) from a Ruby on Rails RSpec test suite, one issue at a time, with per-fix verification and commits. Use this skill whenever the user wants to clean up, silence, fix, or investigate noisy output from `bundle exec rspec`, mentions warnings or stray logs appearing during test runs, or asks to get their RSpec suite running "clean". Also use when a user says things like "my test output is noisy", "there's a bunch of warnings when I run specs", or "help me clean up the RSpec output" - even if they don't explicitly name this skill.