Add air text

[pearmini]

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[cloudflare-workers-and-pages]

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Latest commit:	be672a6
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Preview URL:	https://03a2102c.charming-a13.pages.dev
Branch Preview URL:	https://air-text.charming-a13.pages.dev

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[Copilot]

Pull request overview

Adds a new “Air Text” example to the example/ workspace that uses webcam-based body segmentation to carve out “holes” in a text-filled region, plus associated dependency and Vite configuration updates.

Changes:

• Adds the new example/air-text/ demo (HTML/CSS/JS + helpers + copy) and links it from the examples index.
• Adds ml5 (and related transitive tfjs stack) plus @chenglou/pretext to the example package.
• Introduces an example-scoped Vite config to prebundle deps for the new demo.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Locks new dependencies (ml5/tfjs stack, etc.) required by the Air Text demo
example/vite.config.js	Adds optimizeDeps settings intended to make ml5/tfjs work in Vite dev
example/package.json	Adds dependencies/devDependencies for the example workspace (incl. ml5)
example/index.html	Links the new “Air Text” demo from the examples landing page
example/air-text/index.js	Implements the Air Text demo logic (layout + webcam segmentation loop)
example/air-text/index.html	Adds the Air Text demo page scaffold (stage + hidden video)
example/air-text/index.css	Styles the Air Text stage and positioned text spans
example/air-text/helpers.js	Adds geometry + masking helpers (contours, clipping, unions)
example/air-text/content.js	Adds title/body copy used for layout and fill text

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