Refine Japanese architecture diagram labels

[koriym]

What changed

• replaced mixed Japanese layer labels in the architecture diagram with the canonical English layer names
• kept the explanatory Japanese annotations intact

Why

• the diagram reads more consistently with the layered architecture terminology used elsewhere in the docs
• this change applies to a page that currently exists on the feature/complete-tutorial branch, so the PR targets that branch directly

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ccc25a0b-298a-4390-9eff-6763fa040e2e

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/refine-ja-architecture-diagram

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}