docs(misc): replace cloud onboarding with CNW in tutorials (#34935)

## Current Behavior

Tutorials direct users to cloud.nx.app CTAs requiring GitHub account +
full cloud onboarding before the tutorial starts. CNW starts dropped to
~1,800/day weekday (target ~2,700). Self-healing CI content buried at
bottom of tutorials where only 15-20% of users scroll.

## Expected Behavior

- Tutorials use npx create-nx-workspace as primary path, cloud link kept
as secondary text link
- llm_only tags added to tell AI agents to use CLI only (they can't
handle the browser OAuth flow)
- Tutorial file trees, app names, and scopes updated to match what CNW
actually generates
- Self-healing CI extracted to standalone "Setting up CI" tutorial
- Nx Cloud page moved from Getting Started to Orchestration & CI
overview (redirect added)
- Sidebar labels converted to sentence case per style guide
- AI integrations moved before Editor setup in sidebar (higher traffic)
- Tutorials expanded by default in sidebar
- Intro page now shows CNW and nx init commands directly

## Notes

A follow-up to break tutorials down into smaller, more focused topics
will be the next step.

<img width="547" height="400" alt="image"
src="https://github.com/user-attachments/assets/b717ee54-0dc6-4c08-b1d3-0d80c9dce1df"
/>


## Related Issue(s)

Closes DOC-448

Author: jaysoo

astro-docs/netlify.toml

@@ -54,6 +54,10 @@ to = "/docs/guides/adopting-nx/adding-to-monorepo"
 from = "/docs/technologies/angular/migration/angular-multiple"
 to = "/docs/technologies/angular/migration/angular"
 
+[[redirects]]
+from = "/docs/getting-started/nx-cloud"
+to = "/docs/features/ci-features"
+
 # Rewrite for base path handling (keeps URL the same)
 [[redirects]]
 from = "/docs/*"