Implement Di Task

Problem

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

Inject dependencies through Hanami's auto_inject using Deps["provider_key"] — never call Hanami.app["key"] outside of providers, dependencies must be pre-registered by a provider using a descriptive dot-namespaced snake_case key, inject via constructor (no custom initialize), pass instance_double test stubs through .new(keyword:) in specs, validate resolution to catch Dry::Container::Error on unregistered keys, and access dependencies by their last key segment — for example Deps["repos.user_repo"] → call user_repo.

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