[danmayer]

Summary

• run the full Ruby/Rails matrix once against Redis 7 instead of multiplying every combination by four Redis versions
• retain Redis 4–7 coverage in a dedicated four-job compatibility matrix
• persist Bundler caches only for pushes to main; pull requests install dependencies without creating merge-ref caches

Storage audit

Before cleanup, Coverband had 240 active caches using about 9.5 GiB and no uploaded Actions artifacts. Closed-PR caches and stale main generations were removed, leaving 29 current main caches using about 1.15 GiB.

Validation

• workflow YAML parses
• static storage guard passes
• bundle exec rake test: 629 runs, 7,985 assertions, 0 failures, 4 skips
• bundle exec standardrb --format github: clean

This targets repository cache storage. GitHub accounts for the plan's shared artifact/package allowance separately; Coverband currently has zero Actions artifacts.