MANUAL RUN: Astro IMAGES on the edge and a box, and EmDash on the edge #845

Live checks left over from #312 and #741. They need Cloudflare and Railway credentials, so they're the owner's to run. Each should be cheap: the Workers free plan, plus 5,000 free Cloudflare Images transformations a month.

1. Astro IMAGES on the edge (from #273)

1. Make a fresh Astro 7 + @astrojs/cloudflare 14 app with an <Image> on a server-rendered page. Run rustybuns init and confirm IMAGES is in rustybuns.config.ts.
2. Run rustybuns plan, then deploy.
3. Request the page's /_image?href=…&w=32&f=webp URL. It should return a resized WebP.
4. Destroy the stack.

2. Astro IMAGES passthrough on a box (from #274)

1. On the same app, add targets.box: { provider: "railway" }, run rustybuns build box and deploy to railway-test.
2. Request /_image?href=…&w=32&f=webp. It should return 200 with the original PNG, byte-identical to dist/client/_astro/*.png.
3. Tear down the service. railway-test itself stays.

3. EmDash on the edge

The desktop is verified (FRAMEWORKS.md). Take EmDash's blog-cloudflare template (npm create emdash@latest), run rustybuns init, then plan and deploy. Check that setup seeds posts into D1 and images into R2, then destroy. It creates a D1 database, an R2 bucket and a once-a-minute cron.

Note each result in FRAMEWORKS.md.

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