Release Engine Task

Problem

A Rails team needs help with a task in this area:

Use when shipping a Rails engine gem — FIRST run full test suite (bundle exec rspec) and fix ALL failures, verify gemspec metadata and dependencies match tested Rails/Ruby versions, dry-run: gem build *.gemspec && gem push --dry-run *.gem and verify contents, generate CHANGELOG.md organized by category (added/changed/deprecated/removed/fixed), produce step-by-step upgrade notes with before/after code, set semantic version in lib/[engine_name]/version.rb, document deprecations with migration paths, load release assets conditionally and state which one informed the output.

The team has asked for a concise implementation artifact that a reviewer can inspect without needing to observe the agent's process.

Output

Create answer.md with:

• a short plan for the work
• the concrete Rails-oriented artifact or recommendation
• the verification steps or quality gates that should be run
• any assumptions that affect the result