* WEBDEV-8518: Add CI caching and standardize workflow hygiene

Enable npm dependency caching via actions/setup-node cache:npm (keyed on
package-lock.json) across all four workflows, and cache Playwright browsers
(~/.cache/ms-playwright) in the test workflows that run playwright install.

Also standardize workflow hygiene: pin Node 24 everywhere (add a setup-node
step to gh-pages-main, which had none), switch ci/pr-preview from npm install
to npm ci, and bump actions/setup-node (and ci checkout) to v6.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* WEBDEV-8518: Scope Playwright install to chromium with a step timeout

The test suite only launches chromium (vite.config.ts), but
`npx playwright install` was downloading firefox + webkit + ffmpeg too —
wasted bandwidth and extra CDN downloads that can hang. Restrict to
chromium and add a 5-minute step timeout so a flaky download fails fast
instead of hanging the job.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* WEBDEV-8518: Retry Playwright install to survive CDN download stalls

The chromium download reaches 100% then the install hangs in the
finalize/extract phase (the CDN sends the body but the connection never
closes, so the install promise never resolves). A plain step timeout just
fails the job. Wrap the install in a hard per-attempt `timeout --signal=KILL`
with up to 3 retries so a stalled attempt is killed and reattempted on a
fresh connection.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* WEBDEV-8518: Pin Node to 24.15.0 to fix Playwright install hang

Root cause of the CI hang: Node 24.16.0 (which `node-version: 24` now
resolves to on the runner) hangs in Playwright's post-download extract step
(browser downloads to 100%, then the install never completes). Node 24.15.0
works. Pin the exact patch across all workflows.

Drop the retry loop added while diagnosing — the failure was deterministic,
not a transient CDN stall, so retries don't help. Keep the chromium-only
scope and a 6-minute step timeout as a backstop.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* WEBDEV-8518: Upgrade Playwright to 1.60.0 and unpin Node

Upgrading playwright 1.56.1 -> 1.60.0 resolves the post-download extract
hang on Node 24.16.0, so the exact-patch Node pin is no longer needed.
Revert node-version back to 24 across all workflows. Local suite passes on
1.60.0 (144 tests).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

…#47)

* Add 'range' and 'number' options to style prop settings

* Add a range style setting to the combo box story

* Add a numeric style setting to the search bar story

* Extract helpers and other minor cleanup

* Add unit tests for story style settings

* Fix doc comments

* Remove unused import

Updates README to include instructions for using our style infrastructure.

Co-authored-by: Jason Buckner <jasonb@archive.org>

* Add Offshoot button to elements

* Add theme styles

* Extract styles for different modes

* Extract other styles

* Add handling for custom active color

* Tidy up and build out story

* Switch custom colors from property to mode

* Make border radius customizable

* Adjust default radius

* Only add hover behavior for enabled buttons

* Fall back to main custom colors for custom hover states

* Tidy up CSS variable names in story

* Fix slot name

* Keep button text centered

* Simplify button emulation

* Fix variable name

* Draft link-that-looks-like-button implementation

* Try a different approach

* Tidy up new approach

* Switch back from .ia-button for new implementation

* Add new tab option for link buttons

* Pass through font size properly

* Ensure solid button border

* Adjust outline color