Add repo setup orchestration commands

[kyle-schellen]

Depends on #175.

Closes shop/issues-checkout-kit#908.

This PR wires the shared storefront configuration into the developer workflow. It adds scripts/setup_dev_workspace, uses it from dev up, exposes dev bootstrap, and adds platform-scoped dev <platform> setup / dev <platform> up commands for Android, Swift, React Native, and Web.

The setup commands intentionally run repo-owned setup only; full native/tool provisioning still belongs to root dev up. Root aggregates remain focused on Android, Swift, React Native, and Web, while protocol stays available through dev protocol check.

Verified with YAML parsing, shell syntax checks, scripts/test_setup_storefront_env, and dev help checks for setup, storefront-env, platform checks, and the rn alias.

How to test

bash -n scripts/setup_dev_workspace scripts/setup_storefront_env scripts/test_setup_storefront_env
ruby -ryaml -e 'YAML.load_file("dev.yml")'
scripts/test_setup_storefront_env
dev help bootstrap
dev help storefront-env
dev help android setup
dev help swift setup
dev help react-native setup
dev help rn
dev help web check

Note: There is a follow-up opportunity to move the setup/config parsing logic out of ad hoc Bash and into a small reusable dev utilities area for this monorepo. In particular, helpers for reading .env / .xcconfig values across packages could make these setup scripts easier to maintain and compose. This PR keeps the current command surface focused and tested, and leaves that implementation cleanup for a separate review. Issue created here.

[kyle-schellen]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Polish platform check tooling #177
• Add repo setup orchestration commands #176 👈 (View in Graphite)
• Centralize sample storefront configuration #175
• Align workspace dev commands in root dev.yml #69
• Move React Native dev commands under root dev.yml #64
• Move Swift dev commands under root dev.yml #36
• Move Android dev commands under root dev.yml #35
• main

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[github-actions]

Web — Coverage Report

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	98.96% (571/577)	90.41% (151/167)	100% (55/55)

[github-actions]

React Native — Coverage Report

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	96.76% (239/247)	91.02% (142/156)	100% (64/64)