Write Rom Spec Task

Problem

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

Use when writing ROM specs in Hanami 2.x — configure transactional rollback via a shared "db rollback" RSpec context wrapping every spec with transaction(rollback: :always, auto_savepoint: true), place relation specs under spec/relations/ and repository specs under spec/repos/, test custom Relation query methods with fully defined test data via relation.insert(...), verify Repository CRUD operations including one! raising ROM::TupleCountMismatchError for missing tuples, and run specs to confirm failure before implementing.

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 Hanami-oriented artifact or recommendation
• the verification steps or quality gates that should be run
• any assumptions that affect the result