feat(popover): add docs IX-3942

[alexkaduk]

💡 What is the current behavior?

The ix-popover component and its sub-components (ix-popover-header, ix-popover-image, ix-popover-content, ix-popover-footer) are available in iX, but the documentation site has no dedicated popover page. Users cannot find usage guidance, code examples, or API reference for the new component in the components section.

🆕 What is the new behavior?

• Adds a new Popover component documentation section with Usage and Code tabs
• Documents composition, options, behavior in context, dos and don’ts, and related components for ix-popover and its sub-components
• Adds an interactive playground example with structure markup, methods, events, and API reference for all popover-related components
• Registers the component in the sidebar (between Pill and Toast) and in the components overview page

Files added

File	Purpose
docs/components/popover/index.mdx	Tab wrapper and component description
docs/components/popover/guide.md	Usage guide
docs/components/popover/code.mdx	Playground, structure example, methods, events, API

Files updated

File	Change
sidebars.ts	Adds Popover navigation entry
docs/components/overview.md	Adds Popover to the components index
.env.pullrequest	Configures artifact download from ix PR 2574 for deploy previews

👨‍💻 Help & support

• Playground preview and API sections depend on autogenerated content from the ix repo. Ensure ix PR 2574 (or a newer build that includes ix-popover-image and updated preview examples with icon registration) is merged or rebuilt before merging this PR.
• Related component: Popover news — separate existing docs, not modified in this PR.

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[gemini-code-assist]

Code Review

This pull request adds documentation for the new Popover component, including usage guidelines, code examples, and sidebar navigation. The review feedback highlights several style guide violations in the newly added markdown files. Specifically, the feedback advises on avoiding Oxford commas, using contractions like 'don’t', framing instructions as suggestions rather than commands, using 'e.g.' instead of 'for example', and adhering to standard section headings and formatting for options, behaviors, and Dos and Don’ts.

[alexkaduk]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces the documentation for the new Popover component, including its overview, usage guide, code examples, and API references, and registers it in the Docusaurus sidebar. The review feedback highlights several style guide violations in the newly added documentation files, such as incorrect heading hierarchies in the code tab, the use of passive voice instead of active voice, and incorrect pluralization. Additionally, the feedback suggests reordering the sidebar entry alphabetically to maintain consistency with the overview page.

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