Clarify offline setup commands in README

[FrizzleM]

Motivation

• Make the "For offline usage" instructions accurate by showing the actual commands required to run the Vite web installer from the repository root and the correct subdirectory to use.

Description

• Update README.md to point the offline workflow at the quest-web-installer/ folder, add an explicit cd quest-web-installer step, separate development (npm run dev) and production (npm run build / npm run preview) command blocks, and close the previously unterminated fenced code block.

Testing

• Inspected quest-web-installer/package.json with cat quest-web-installer/package.json to confirm the dev, build, and preview scripts exist and are correct.
• Verified the rendered README section with nl -ba README.md | sed -n '54,72p' and nl -ba README.md | tail -n 30 to confirm the updated commands and formatting.

---

Codex Task

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 8927fbd4d9

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".

[chatgpt-codex-connector]

Remove the extra cd quest-web-installer

If someone follows the offline setup instructions top-to-bottom in a single shell, the previous block already leaves them inside quest-web-installer/, so this cd fails with No such file or directory before the production commands run. That makes the new production-build path unusable unless the reader manually backs out to the repo root or starts a fresh shell.

Useful? React with 👍 / 👎.