Add PCS video and clean up some areas

[stefanjudis]

Affected Components

• Content & Marketing
• Pricing
• Test
• Docs
• Learn
• Other

Notes for the Reviewer

I started this PR and only wanted to add a new video but got carried away a little.

Revised Playwright Check Suites Getting started and new explainer video

Unified CTAs at the beginning of all quick starts

Etc...

Fixed inconsistent rendering in quick starts

Some quick starts didn't render the sidebar. Now they all do.

Made the TCP quick start discoverable

The page was there but it wasn't linked

Brought back the PrivateLocation construct

The page for the private locations wasn't included in the sidebar

Update mint CLI

I was debugging something and updated the mintlify cli!

[Copilot]

Pull Request Overview

This PR updates documentation, configuration files, and package dependencies across the Checkly documentation repository. The changes primarily focus on improving quickstart guides, fixing formatting issues, and updating numerous npm package versions to their latest releases.

Key Changes:

• Enhanced quickstart documentation with improved structure, embedded video content, and consistent tip sections linking to overview pages
• Fixed numerous spelling and formatting issues (trailing whitespace, typos)
• Updated 100+ npm package dependencies to newer versions in package-lock.json

Reviewed Changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
quickstarts/playwright-check.mdx	Added YouTube embed, improved documentation flow, fixed spelling error ("Lern" → "Learn")
quickstarts/url-monitor.mdx	Repositioned tip section for better content flow
quickstarts/tcp-monitor.mdx	Repositioned tip section, removed trailing whitespace
quickstarts/multistep-check.mdx	Added tip section, removed trailing whitespace
quickstarts/heartbeat-monitor.mdx	Added tip section, fixed whitespace formatting
quickstarts/browser-check.mdx	Added tip section, reordered imports, removed mode setting, fixed whitespace
quickstarts/api-check.mdx	Added tip section, removed trailing whitespace
snippets/youtube-embed.jsx	Added comprehensive JSDoc documentation, removed trailing whitespace
package-lock.json	Updated numerous package versions (e.g., @mintlify/cli, react, shiki, etc.)
docs.json	Reordered quickstart pages, added Platform/Private Location group
detect/synthetic-monitoring/playwright-checks/overview.mdx	Removed extra blank line
constructs/quickstarts/playwright-check.mdx	Removed mode setting
constructs/private-location.mdx	Fixed link path and sidebar title

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[stefanjudis]

Just added some JSDoc types so that my editor stops complaining about any types. :D

[MariadeAnton]

@stefanjudis small bits and bots on top of your clean up.

[stefanjudis]

Great review. @MariadeAnton is fine with moving forward. :) 🎉