This PR migrates the whole monorepo to use Tailwind v4:
- Removed `@tailwindcss/container-queries` plugin since it's included by
default in v4,
- Bump all instances of Tailwind to v4. Made minimal changes to the
shared config to remove non-supported features (`alpha` mentions),
- Migrate all apps to be compatible with v4 configs,
- Fix the `typography.css` import in 3 apps,
- Add missing rules which were included by default in v3,
- Run `pnpm dlx @tailwindcss/upgrade` on all apps, which renames a lot
of classes
- Rename all misnamed classes according to
https://tailwindcss.com/docs/upgrade-guide#renamed-utilities in all
apps.
---------
Co-authored-by: Jordi Enric <jordi.err@gmail.com>
## Problem
We'd like to update react to `19` but many of our dependencies don't
support it.
## Solution
Update those dependencies. This PR focuses on `react-markdown`
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Chores**
* Upgraded react-markdown to 10.1.0 (and remark-gfm to 4.0.0) across
projects for improved Markdown support.
* **Style**
* Adjusted Markdown rendering so typography and spacing are applied via
surrounding containers, improving consistent styling across docs and UI.
* **New Content**
* Added a new RSS feed item for a recent blog post.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
### FAQ (`type: 'faq'`)
Accordion-style FAQ with expand/collapse. Each item has a `question` and
`answer`. Click to toggle — only one open at a time.
<img width="1309" height="610" alt="Screenshot 2026-03-13 at 17 31 31"
src="https://github.com/user-attachments/assets/289c8a12-3835-4f64-bbe6-fb7095df4e7c"
/>
### Code Block (`type: 'code-block'`)
Syntax-highlighted code display using shiki with custom Supabase
dark/light themes. Supports:
- **Single file** — `code` + optional `filename` + `language`
- **Multi-file** — `files: [{ filename, code, language }]` with
clickable tabs
- Line numbers via CSS counters
- All highlighting runs at build time (server component), only tab
switching is client-side
<img width="1283" height="415" alt="Screenshot 2026-03-13 at 17 32 07"
src="https://github.com/user-attachments/assets/9cc9a215-d5c9-47c9-8e21-c1dd3beca4ba"
/>
### Steps (`type: 'steps'`)
Numbered step-by-step guide with a vertical timeline connector. Each
item has `title` and either a plain `description` string or a `content`
slot accepting any React node (e.g. images, code blocks).
<img width="1119" height="810" alt="Screenshot 2026-03-13 at 17 32 20"
src="https://github.com/user-attachments/assets/cb67aaab-9ed4-42e2-bf1c-8d836024e469"
/>
### Quote (`type: 'quote'`)
Centered testimonial block with `quote`, `author`, optional `role`, and
optional `avatar` image.
<img width="1095" height="238" alt="Screenshot 2026-03-13 at 17 32 37"
src="https://github.com/user-attachments/assets/356a39ca-9f65-4414-bf77-6060993594a4"
/>
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES/NO
## What kind of change does this PR introduce?
Bug fix, feature, docs update, ...
## What is the current behavior?
Please link any relevant issues here.
## What is the new behavior?
Feel free to include screenshots if it includes visual changes.
## Additional context
Add any other context or screenshots.
