### Context
As per PR title - currently the assistant panel's maximize CTA defaults
to opening in explorer, which might be confusing for users who don't
have the explorer feature preview enabled
<img width="581" height="190" alt="image"
src="https://github.com/user-attachments/assets/9a9b6129-164e-4e3e-a14e-66ecafe8e5ff"
/>
<img width="574" height="157" alt="image"
src="https://github.com/user-attachments/assets/ffff0a49-3357-4e5f-8cc0-be2f94263128"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Updated the AI assistant’s maximize control with context-sensitive
actions.
* When Explorer preview is enabled, the control opens the active
conversation in Explorer.
* When Explorer preview is disabled, the control maximizes or minimizes
the assistant panel.
* Updated the control’s label, accessibility text, and keyboard shortcut
to reflect the available action.
* Maximized AI Assistant panels now use the full available width, while
other sidebars retain responsive sizing.
* **Bug Fixes**
* Improved sidebar behavior on mobile and overlay layouts to prevent
unwanted resizing or collapsing.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Context
Supports maximising the AI assistant to fit the content width which will
provide a larger workspace for observability work for example
<img width="424" height="179" alt="image"
src="https://github.com/user-attachments/assets/f2b84571-0188-4d94-9798-a289496ab543"
/>
<img width="1388" height="960" alt="image"
src="https://github.com/user-attachments/assets/07f52b1f-7b95-4d67-9a5c-151ef036fc7c"
/>
## To test
- [ ] Can maximize/minimize AI Assistant
- [ ] Swapping to another sidebar should bring the panel size back to
previous
- Only the AI Assistant can be maximized (for now at least)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added maximize/minimize controls for the AI assistant panel.
* Added a keyboard shortcut to quickly maximize the assistant (hidden
from settings).
* **Improvements**
* The main content panel now collapses/resizes automatically based on
assistant maximization.
* Switching away from the AI assistant now automatically exits maximized
mode; returning restores the maximized experience.
* Updated the assistant header UI with dynamic label/icon/accessibility
and a maximize shortcut when chat isn’t loading.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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>
Mobile sheet nav doesn't close on route change and viewport resizing
after #43184.
This PR fixes that and also makes it optional to close on nav and
resizing, because the sidepanels need them _not_ to resize, while mobile
navigation menu does.
Also added some tests. 🪄
This pull request standardizes the usage of props and value types for
the `ResizablePanelGroup` and `ResizablePanel` components across
multiple files in the codebase. Specifically, it replaces the deprecated
`direction` prop with `orientation`, and updates numeric prop values
(such as `defaultSize`, `minSize`, and `maxSize`) to be passed as
strings. This ensures consistency with the updated component API and
improves type safety.
**Component API Updates:**
* Replaced the `direction` prop with `orientation` for all usages of
`ResizablePanelGroup`
* Updated all `ResizablePanel` props (`defaultSize`, `minSize`,
`maxSize`) to be passed as strings instead of numbers, ensuring
compatibility with the latest API requirements.
* Removed deprecated or unnecessary props such as `order` from
`ResizablePanel` components, and ensured all size-related props are
consistently formatted as strings.
Joshen Lim