Run web build commands during deploy for hosted apps

[MitchLillie]

Closes https://github.com/shop/issues-admin-extensibility/issues/2398

Summary

• bundleAndBuildExtensions now runs web.toml build commands concurrently alongside extension bundling during shopify app deploy
• Scoped to webs that explicitly define a build command — extension-only apps and dev-only webs are unaffected
• Respects --no-build / skipBuild flag

Root cause: deploy called bundleAndBuildExtensions (extensions only) but never invoked buildWeb('build', ...), unlike shopify app build which does. Users had to manually run build before deploy.

Closes shop/issues-admin-extensibility#2398

Manual test instructions

Setup: You need an app with a web/ directory and a web.toml that defines a build command:

# web/web.toml
[commands]
dev = "npm run dev"
build = "npm run build"

Test: build command runs on deploy

1. Make a change to your web app source that only reflects after a build
2. Run shopify app deploy
3. Confirm your build command output appears in the concurrent output alongside extensions
4. Confirm the deploy succeeds

Test: --no-build skips web build

1. Run shopify app deploy --no-build
2. Confirm the build command does NOT run (no web-prefixed process in output)

Test: extension-only apps unaffected

1. Use an app whose web.toml has no build command (or no webs at all)
2. Run shopify app deploy — confirm no new web-prefixed process appears in output

Test plan

• runs web build command concurrently with extensions when build command is defined
• skips web build for webs without a build command defined
• skips web build command when skipBuild is true
• Manual test with a hosted app
• Manual test with --no-build

🤖 Generated with Claude Code

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