The `[tool.uv.required-version]` is respected by uv CLI and importantly
the `astral-sh/setup-uv` action in CI. No more hard coding.

Follow up to #203. We rely on `[tool.uv.required-version]` as the source
of truth for uv version.

`pkg_resources` from `setuptools` is unavailable in Python 3.13,
breaking the docs build with Sphinx 9. This switches to the `packaging`
library which provides the same `Version.base_version` API and is the
modern standard replacement. Also drops the stale `markupsafe==2.0.1`
pin which was a workaround for an old Jinja2 compatibility issue.

#194)

Adds a wheel event listener that prevents event propagation to the parent
page while still allowing HiGlass to handle zoom interactions. This fixes
the issue where scrolling to zoom in the HiGlass widget would also scroll
the Jupyter notebook page, particularly when running notebooks in VS Code.

The fix uses stopPropagation() with passive: false to intercept wheel
events at the widget container level before they bubble up to the notebook.

These changes add `ty` as a development dependency and enforce
typechecking in CI. To typecheck locally:

```sh
uv run ty check
```

Bumps the actions group with 1 update in the / directory: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Raise minimum Python to 3.10

Python 3.9 reached end-of-life in October 2025. This bumps the floor to
3.10 and extends CI coverage through 3.14 to match the currently
supported CPython versions.

* Apply ruff upgrades

* Leave off 3.14 for now

* Remove `target-version` from Ruff

Ruff will infer a missing target-version from the requires-python field
in a pyproject.toml

* Remove Ruff format config

Redundant with defaults.

* Add widget smoke test with vitest browser mode

Smoke-tests the HiGlass anywidget render pipeline in headless Chromium
via vitest browser mode and Playwright. SwiftShader args are required
since PixiJS needs a WebGL context unavailable in headless by default.

* Just install chromium in CI

* Use `onTestFinished` instead of try/catch

* Render HiGlass viewer inside Shadow DOM

HiGlass v2.2.2 exports its CSS as `hglib.CSS`, which lets us encapsulate
viewer styles using the Constructable Stylesheets API and a Shadow DOM.
This prevents HiGlass styles from leaking into (or being affected by)
the host notebook environment.

The wheel event handler now also calls `preventDefault()` in addition to
`stopPropagation()`. With the shadow DOM boundary, `stopPropagation()`
alone wasn't sufficient to prevent page scrolling in marimo since
composed events cross the shadow boundary.

* Upgrade to higlass v2.2.3 for type export fix

* Fix type checking and linting

* ci: Upload smoke test failure screenshot as artifact

* Fix smoke test to check shadow root children

---------

Co-authored-by: Nezar Abdennur <nabdennur@gmail.com>