Add typed JSON output to Hydrogen project and account commands

[gonzaloriestra]

WHY are these changes introduced?

Project and account commands need predictable resource fields and complete initialization outcomes.

Fixes https://github.com/shop/issues-develop/issues/23682

WHAT is this pull request doing?

Expose explicit storefront projections with gid, name, canonical storeDomain, null unavailable fields, and UTC timestamps. Add JSON login, logout, link, and unlink results. Initialization returns {status, project, failures} and preserves completed work while exiting nonzero on partial failure. Add minor changesets for CLI Hydrogen and create-hydrogen.

HOW to test your changes?

shopify hydrogen list --json
shopify hydrogen unlink --json
shopify hydrogen init --path ./json-storefront --quickstart --no-install-deps --json

Checklist

• I have read the contributing guidelines
• I have considered cross-platform impacts
• I have added a changeset for user-facing changes
• I have added tests
• I have updated the documentation

[shopify]

Oxygen deployed a preview of your gonzalo/hydrogen-json-project branch. Details:

Storefront	Status	Preview link	Deployment details	Last update (UTC)
Skeleton (skeleton.hydrogen.shop)	✅ Successful (Logs)	Preview deployment	Inspect deployment	October 13, 202611:04 AM

Learn more about Hydrogen's GitHub integration.

[fredericoo]

Went through this one. It's a clean follow-on from the rest of the stack: same jsonOutputSchema / writeJsonResult / descriptionForHelp pattern as the env and route PRs, results carry no tokens (login just picks shop/shopName/email), and the human-readable output looks unchanged for all six commands. Moving renderProjectReady and the remote-template info into presentTemplateResult is a nice split.

Prompts in --json mode look fine too. When stdout is piped, cli-kit's throwInNonTTY rejects them, so login/link/init fail fast with a JSON error instead of hanging.

Two small comments, neither blocking. Overall LGTM