* Add `stdout` to the playwright config

* tmp: test UI change

* add env var

* try on push

* try triggers

* more debug

* uncomment condition

* fix pr checkout

* try additional jlpm

* try copy yarnrc

* try jlpm install

* run base setup after

* try jlpm install

* try start_server_script

* try installing yarn 3

* try alias

* try with custom action

* undo previous debug

* undo test changes

* Use `npm_client`

* Update to upstream action

* Provide a custom rendermime plugin

* Lint

* Add UI tests for local links

* Ignore check link in the test notebook

* Improve tests

* Add component to provide file browser actions

* Fix usesignal

* Lint

* Flex display

* CSS fixes

* Undo unrelated change

* Patch methods directly

* Fix folder selection

* Update Playwright Snapshots

* Update Playwright Snapshots

* Add link to the upstream issue

* Add UI tests

* Lint

* Tweak delete button color

* Move to a separate plugin

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* Update to JupyterLab 4.0.1

* Sort notebooks first by default

* Add Project Jupyter info, extra context and detail to home page/index.

* Added links, minor formatting.

* Updated homepage, adapted unified messaging on notebook page.

* Updated links.

* Added minimal description to the user-documentation main page.

* Revised notebook introduction text.

* Bullet point updates.

* Fixed typo.

* Link update.

* Changed lightweight to simplified.

* Added Jupyter Desktop link.

* Added standards info/links.

* Update standards link.

* Update standards link.

* Update link.

* Added extension to markdown file link.

)

* Added Drop Shadows

Adjusted drop shadows for tree view, markdown and text notebooks.

* Update: Corrected Tree View Shadows

Tree View drop shadow values are in co-ordination with the others.

* Responsive padding for main-panel

Adjusted main-panel padding to be responsive

* Update: media-query rearranged

* Update: Body selectors with filters

Added data-format body selectors to the css

* Re-written media query

Re-wrote the media query for allowing responsiveness without a refresh

* Update Playwright Snapshots

* Update Playwright Snapshots

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updates:
- [github.com/python-jsonschema/check-jsonschema: 0.22.0 → 0.23.1](python-jsonschema/check-jsonschema@0.22.0...0.23.1)
- [github.com/charliermarsh/ruff-pre-commit: v0.0.263 → v0.0.270](astral-sh/ruff-pre-commit@v0.0.263...v0.0.270)

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* Add the notification plugin

* Update Playwright Snapshots

* Update Playwright Snapshots

---------

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…Open in..." dropdown menu if there are multiple options, show single button otherwise (#6866)

* add option to open in nbclassic if installed

* account that getOption() can return truthy 'false'

* immidiately convert nbclassicInstalled to boolean

* Capitalize NbClassic as in PyPI per @JasonWeill

* capitalize commandDescription

* Update packages/lab-extension/src/index.ts

Co-authored-by: Jason Weill <93281816+JasonWeill@users.noreply.github.com>

* Update packages/lab-extension/src/index.ts

Co-authored-by: Jason Weill <93281816+JasonWeill@users.noreply.github.com>

* Update packages/lab-extension/src/index.ts

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* Update packages/lab-extension/src/index.ts

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* Update packages/lab-extension/src/index.ts

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* Update packages/lab-extension/src/index.ts

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* add openInNewIcon based on ##6793 by @JasonWeill

* show single 'open' button if only one option is available

* add button styling

* add css class to toolbarButton

* rename addCommand to addSwitcherCommand

* set page_config["nbclassic_installed"]

* Update snapshots

* fix general.spec.ts lint problem as detected in CI run https://github.com/jupyter/notebook/actions/runs/5008582825/jobs/8976612053?pr=6866

* Use optional chaining instead of non-null assertion to fix lint error https://github.com/jupyter/notebook/actions/runs/5008628805/jobs/8976713072?pr=6866

* add new line to try to fix eslint error

* fix prettier CI errors

* Revert "fix general.spec.ts lint problem as detected in CI run https://github.com/jupyter/notebook/actions/runs/5008582825/jobs/8976612053?pr=6866"

This reverts commit 9f0b544.

* Revert "add openInNewIcon based on ##6793 by @JasonWeill"

This reverts commit eca0a4e.

* use launchIcon instead of openInNewIcon

* fix nbclassic urlprefix

* update general snapshots to account for use of launchIcon

* update mobile snapshots to account for launchIcon

* check if extension is enabled, not installed

* add bundled server extension

* Revert "add bundled server extension"

This reverts commit 7d261db.

* set page_config in initalize_handlers

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…tyled content (#6911)

* add an empty splash screen

* add empty splash screen styling

* remove technical comment

* Update packages/application-extension/src/index.ts

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* wip loading custom css

* read css file from profile directory and apply

* update css handler, add CLI flag to disable custom CSS, documentation

* import ExtensionAppJinjaMixin

* remove ExtensionAppJinjaMixin as a JupyterNotebookApp base class

* add type hint to ignore jinja2_env type

* fix prettier issue in docs

* add empty line; trigger new docs build

* new line caused prettier error, remove

* move custom css to different directory and update handler

* modify regex

* satisfy mypy: check for match in regex before grabbing the directory path

* load custom css in consoles page

* Add docs for plugins

* fix some wording

* Rename browser tab title to Home (#6912)

* fixing `test_tree_handler` to expect Home as title

* Enabled the Accel F shortcut by default for documentsearch.

* Update Playwright Snapshots

* Update Playwright Snapshots

* Added tentative find-plugin docs, WIP.

* Removed file with shortcut override.

* Cleanup/removal of todo.

* Update docs/source/notebook.md

Co-authored-by: Andrii Ieroshenko <ieroshenkoa@gmail.com>

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Co-authored-by: Jeremy Tuloup <jeremy.tuloup@gmail.com>
Co-authored-by: Andrii Ieroshenko <ieroshenkoa@gmail.com>