Add current post ID and type to context

[ryanwelcher]

Introduces new items to the context being passed to each component.

Closes #145

[Copilot]

Pull request overview

This PR enriches the props/context passed into Advanced Query Loop (AQL) editor-side control components and SlotFills so extension plugins can read the currently edited entity (post/page/template) when building query vars—addressing the “context in editor” need raised in #145.

Changes:

• Adds context.currentPostId and context.currentPostType to the props passed into AQL controls/SlotFills in the block editor.
• Documents the newly available context values in extending-aql.md (and updates examples).
• Updates CLAUDE.md architecture notes to reflect the enriched propsWithControls.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/variations/controls.js	Uses useSelect to read current editor entity info and injects it into propsWithControls.context.
extending-aql.md	Documents the enriched context passed to extension controls and updates example signatures.
CLAUDE.md	Notes that propsWithControls now includes current editor entity context fields.

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