Forward Wrangler config vars to astro:env

[matthewp]

Fixes #16790

Changes

• astro:env public variables defined under vars in a Wrangler config (wrangler.toml/.json/.jsonc) now resolve when imported from astro:env/client and astro:env/server. Previously only .dev.vars was loaded into the environment, so public vars were inlined as undefined at build time (only getSecret worked).
• The adapter reads vars via wrangler's unstable_readConfig in astro:config:done and assigns them to process.env, respecting CLOUDFLARE_ENV. Using wrangler's own reader covers TOML/JSON/JSONC and does the same env merging wrangler does at runtime. .dev.vars is loaded afterwards so it still takes precedence.

Testing

• Removed the manual process.env.API_URL/process.env.PORT overrides from astro-env SSR tests. Those overrides were masking the bug; the tests now rely on the adapter loading vars from the fixture's wrangler.jsonc, exercising the real code path for both build and dev.

Docs

• No docs update needed; this makes the adapter match the already-documented astro:env behavior.

[changeset-bot]

🦋 Changeset detected

Latest commit: 389dd27

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 40 packages

Name	Type
@astrojs/cloudflare	Patch
@test/astro-cloudflare-node-prerender-mdx	Patch
@test/astro-cloudflare	Patch
@test/astro-cloudflare-allowed-hosts	Patch
@test/astro-cloudflare-astro-dev-platform	Patch
@test/astro-cloudflare-astro-env	Patch
@test/astro-cloudflare-binding-image-service	Patch
@test/astro-cloudflare-cache-provider-wait-until	Patch
@test/astro-cloudflare-cache-provider	Patch
@test/astro-cloudflare-client-address	Patch
@test/astro-cloudflare-compile-custom-image-service	Patch
@test/astro-cloudflare-compile-image-service	Patch
@test/astro-cloudflare-custom-entryfile	Patch
@test/astro-cloudflare-dev-image-endpoint	Patch
@test/astro-cloudflare-external-image-service	Patch
@test/astro-cloudflare-external-redirects	Patch
@test/astro-cloudflare-internal-redirects	Patch
@test/astro-cloudflare-no-output	Patch
@test/astro-cloudflare-prerender-node-env	Patch
@test/astro-cloudflare-prerender-queue-consumers	Patch
@test/astro-cloudflare-prerender-styles	Patch
@test/astro-cloudflare-prerenderer-errors	Patch
@test/astro-cloudflare-prerenderer-render-error	Patch
@test/routing-priority-cloudflare	Patch
@test/cf-server-entry	Patch
@test/astro-cloudflare-server-island-prerender-framework	Patch
@test/astro-cloudflare-sessions	Patch
@test/astro-cloudflare-sql-import	Patch
@test/cf-ssr-deps	Patch
@test/astro-cloudflare-static	Patch
@test/astro-cloudflare-svelte-rune-deps	Patch
@test/astro-cloudflare-top-level-return	Patch
@test/cf-user-optimize-deps	Patch
@test/astro-cloudflare-vite-plugin	Patch
@test/astro-cloudflare-with-base	Patch
@test/astro-cloudflare-with-react	Patch
@test/astro-cloudflare-with-solid-js	Patch
@test/astro-cloudflare-with-svelte	Patch
@test/astro-cloudflare-with-vue	Patch
@test/astro-cloudflare-wrangler-preview-platform	Patch

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