Add Hello World Datadog app

[setnilson]

Summary

Add a new Datadog App workspace for Sarah's App Wed, Aug 19, 1:18:25 pm so it renders a simple Hello World experience and can be built through the existing npm workspace.

Changes

• Added apps/sarah-s-app-wed-aug-19-1-18-25-pm with React, Vite, TypeScript, and Datadog app plugin configuration.
• Implemented a minimal Hello World screen with scoped app styling.
• Regenerated package-lock.json through npm so the new workspace package and node_modules workspace link are present.

Testing/Validation

• npm run typecheck -w apps/sarah-s-app-wed-aug-19-1-18-25-pm
• npm run lint -w apps/sarah-s-app-wed-aug-19-1-18-25-pm
• npm run build -w apps/sarah-s-app-wed-aug-19-1-18-25-pm
• npm ci --ignore-scripts
• Confirmed package-lock.json contains apps/sarah-s-app-wed-aug-19-1-18-25-pm and node_modules/sarah-s-app-wed-aug-19-1-18-25-pm entries.
• Ran the app locally with Vite and verified the rendered Hello, world! screen in Chromium via playwright-cli.

Note: Storybook validation was not available because this workspace has no Storybook scripts or stories. The Datadog Vite plugin logged non-fatal network upload failures for analytics, metrics, and sourcemaps during local build/dev, while the build command exited successfully.

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PR by Bits - View session in Datadog

Comment @datadog-staging to request changes

[datadog-staging]

View session in Datadog

Bits Code status: ✅ Done

Comment @datadog-staging to request changes

[datadog-staging]

I can only run on private repositories.