#11459 bc2e74d Thanks @mingjunlu! - Fixes false positive audit warnings on elements with the role "tabpanel".
#11472 cb4e6d0 Thanks @delucis! - Avoids targeting all files in the src/ directory for eager optimization by Vite. After this change, only JSX, Vue, Svelte, and Astro components get scanned for early optimization.
#11387 b498461 Thanks @bluwy! - Fixes prerendering not removing unused dynamic imported chunks
#11437 6ccb30e Thanks @NuroDev! - Fixes a case where Astro's config experimental.env.schema keys did not allow numbers. Numbers are still not allowed as the first character to be able to generate valid JavaScript identifiers

#11439 08baf56 Thanks @bholmesdev! - Expands the isInputError() utility from astro:actions to accept errors of any type. This should now allow type narrowing from a try / catch block.

// example.ts
import { actions, isInputError } from 'astro:actions';

try {
  await actions.like(new FormData());
} catch (error) {
  if (isInputError(error)) {
    console.log(error.fields);
  }
}

#11452 0e66849 Thanks @FugiTech! - Fixes an issue where using .nullish() in a formdata Astro action would always parse as a string
#11438 619f07d Thanks @bholmesdev! - Exposes utility types from astro:actions for the defineAction handler (ActionHandler) and the ActionError code (ActionErrorCode).
#11456 17e048d Thanks @RickyC0626! - Fixes astro dev --open unexpected behavior that spawns a new tab every time a config file is saved
#11337 0a4b31f Thanks @florian-lefebvre! - Adds a new property experimental.env.validateSecrets to allow validating private variables on the server.

By default, this is set to false and only public variables are checked on start. If enabled, secrets will also be checked on start (dev/build modes). This is useful for example in some CIs to make sure all your secrets are correctly set before deploying.
```
// astro.config.mjs
import { defineConfig, envField } from 'astro/config';

export default defineConfig({
  experimental: {
    env: {
      schema: {
        // ...
      },
      validateSecrets: true,
    },
  },
});
```

#11443 ea4bc04 Thanks @bholmesdev! - Expose new ActionReturnType utility from astro:actions. This infers the return type of an action by passing typeof actions.name as a type argument. This example defines a like action that returns likes as an object:

// actions/index.ts
import { defineAction } from 'astro:actions';

export const server = {
  like: defineAction({
    handler: () => {
      /* ... */
      return { likes: 42 };
    },
  }),
};

In your client code, you can infer this handler return value with ActionReturnType:

// client.ts
import { actions, ActionReturnType } from 'astro:actions';

type LikesResult = ActionReturnType<typeof actions.like>;
// -> { likes: number }

#11436 7dca68f Thanks @bholmesdev! - Fixes astro:actions autocompletion for the defineAction accept property
#11455 645e128 Thanks @florian-lefebvre! - Improves astro:env invalid variables errors