Reverts supabase/supabase#46848
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
## Release Notes
**Refactor**
* Standardized 404 error handling across documentation pages to use
Next.js built-in features instead of custom utilities
* Enhanced consistency for missing documentation entries, guides, and
references when users navigate to unavailable pages
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* 404 handling now returns path-aware not-found pages for missing docs
and guides, improving accurate user-facing 404 responses.
* Improved file-missing errors for guides so missing content cases
surface clearer diagnostic info.
* **Chores**
* Enhanced 404 telemetry so missing-path information is recorded for
better monitoring and quicker troubleshooting.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added an "AI Tools" guides section with landing, overview, and
troubleshooting pages; guides render from Markdown.
* **Documentation**
* New AI Tools guides: local development, Quickstart, CLI overview,
troubleshooting, and detailed overview pages.
* **Chores**
* Site navigation updated to include an AI Tools entry and renamed
subsection to "AI"; added permanent redirects from prior Getting Started
AI URLs to the new AI Tools locations.
* **Bug Fixes**
* Updated internal guide links so AI prompt pages point to the new AI
Tools paths.
[](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45795)
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Greg Richardson <greg.nmr@gmail.com>
