Shopify CLI: allow non-interactive Hydrogen upgrade

[z0n]

Hi! I just tried to create an agent skill that automates the Shopify Hydrogen upgrade and I stumbled upon two issues:

• shopify hydrogen upgrade can't run non-interactively. I tried the --force flag but that only skips some checks. I still need to confirm the prompt:

pnpm shopify hydrogen upgrade --version 2026.4.1 --force
╭─ info ───────────────────────────────────────────────────────────────────────╮
│                                                                              │
│  Included in this upgrade:                                                   │
│                                                                              │
│  Fixes                                                                       │
│    • Fix cart operations failing on stores without VisitorConsent type       │
│    • Fix set-cookie-parser and cookie resolution warnings during dev         │
│    • Deprecate @shopify/remix-oxygen                                         │
│    • Update CLI route scaffolding to use react-router instead of             │
│      @shopify/remix-oxygen                                                   │
│                                                                              │
╰──────────────────────────────────────────────────────────────────────────────╯

╭─ error ──────────────────────────────────────────────────────────────────────╮
│                                                                              │
│  Failed to prompt:                                                           │
│                                                                              │
│  Are you sure you want to upgrade to 2026.4.1?                               │
│                                                                              │
│  This usually happens when running a command non-interactively, for example  │
│   in a CI environment, or when piping to or from another process.            │
│                                                                              │
│  To resolve this, specify the option in the command, or run the command in   │
│  an interactive environment such as your local terminal.                     │
│                                                                              │
╰──────────────────────────────────────────────────────────────────────────────╯

• There's no direct "check for updates" command. shopify hydrogen upgrade already tries to upgrade but an overview like the one you get when running shopify hydrogen dev would be nice:

╭─ info ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│                                                                                                                                                              │
│  There's a new @shopify/hydrogen version available.                                                                                                          │
│                                                                                                                                                              │
│  Current: 2026.4.0 | Latest: 2026.4.1                                                                                                                        │
│                                                                                                                                                              │
│  The next 1 version(s) include                                                                                                                               │
│    • 2026.4.1 - Cart compatibility fixes and @shopify/remix-oxygen deprecation                                                                               │
│                                                                                                                                                              │
│  Next steps                                                                                                                                                  │
│    • Run `pnpm shopify hydrogen upgrade` or `pnpm shopify hydrogen upgrade --version 2026.4.1`                                                               │
│    • Read release notes at https://hydrogen.shopify.dev/releases                                                                                             │
│                                                                                                                                                              │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

That one isn't a big issue as I can just use the npm registry to check for new versions but a built-in method would be an improvement.

[z0n]

I prepared a PR for the first issue:

• feat(cli): add non-interactive flag to hydrogen upgrade command #3744