Improve Repository setup guidance

[Pluglug]

Summary

• Repository setup前にパスワードマネージャー等の準備を案内
• 3つの設定値について、Blenderでの入力先とSecretの扱いを明確化
• Finish setup後にも短いBlender手順とInstallation Guideへの導線を表示
• Recovery secretが更新延長とRepository access再発行に必要であることを明記

Verification

• npm test: 19 tests passed
• 購入確認、credential表示、保存確認、Setup completeへの遷移をローカル疑似応答で確認
• Setup complete後もInstallation Guideへの導線が表示されることを確認

[Pluglug]

@codex review

[cloudflare-workers-and-pages]

Deploying pie-menu-editor-website with    Cloudflare Pages

Latest commit:	61b1e8c
Status:	✅  Deploy successful!
Preview URL:	https://ccb2058b.pie-menu-editor-website.pages.dev
Branch Preview URL:	https://website-setup-access-guidanc.pie-menu-editor-website.pages.dev

View logs

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-30T07:41:23.554577Z	61b1e8c	Manual request

ℹ️ About Codex in GitHub

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• Comment "@codex review" or "@codex security review".

Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Swish!

Reviewed commit: 61b1e8c855

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".