feat(create-kadena-app): replace starter with updated scaffold from standalone repo

[Raaghav-m]

This PR replaces the existing @kadena/create-kadena-app package with the updated implementation developed in kadena-scaffold
.

🔑 Key Improvements

Modernized starter app – based on the latest Kadena tooling and patterns.

Frontend integration – users can deploy and interact with custom contracts directly from the generated app.

Developer experience – simplified setup with a ready-to-use scaffold, similar to “speedrunethereum,” but for Kadena.

Cleaner structure – ensures the project follows monorepo conventions under packages/tools/create-kadena-app.

🆚 Differences vs. Previous Version

Old package provided a very basic skeleton with limited functionality.

New version supports:

Contract deployment workflow.

Frontend interaction boilerplate out-of-the-box.

Updated dependencies and build setup.

Consolidates community-maintained work into the main monorepo → avoids fragmented repos and solves repo ownership issue.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 71e4dcc

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
preview-dev-wallet	Error			Sep 3, 2025 4:40pm

[vercel]

@Raaghav-m is attempting to deploy a commit to the Kadena Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

This PR is stale because it is open for 60 days with no activity