Document Standard Schema validator support

[Copilot]

ArkEnv has supported Standard Schema validators (Zod, Valibot, etc.) since v2.1.28, but this capability was not documented. Users can now mix validators from different libraries in a single schema.

Changes

READMEs

• Added "Compatible with any Standard Schema validator" to features list

Documentation (/docs/standard-schema)

• What Standard Schema is and why it matters (interoperability, zero runtime overhead)
• Usage examples with Zod and Valibot
• Practical use cases: complex transformations, incremental migration, team preferences
• Error handling and TypeScript inference

Example (examples/with-standard-schema/)

• Working project demonstrating ArkType + Zod integration
• Shows mixing validators based on complexity needs

Navigation

• Added page to docs menu under API section
• Referenced from quickstart guide

Example Usage

import arkenv from 'arkenv';
import { z } from 'zod';

const env = arkenv({
  // ArkType for concise syntax
  HOST: "string.host",
  NODE_ENV: "'development' | 'production' | 'test'",
  
  // Zod for complex transformations
  DATABASE_URL: z.string().url(),
  ALLOWED_ORIGINS: z.string()
    .transform(str => str.split(','))
    .pipe(z.array(z.string().url())),
});

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I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.googleapis.com
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If you need me to access, download, or install something from one of these locations, you can either:

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Original prompt

---

This section details on the original issue you should resolve

<issue_title>Document support for any Standard Schema validator</issue_title>
<issue_description>Since #498 (arkenv@>=2.1.28) supports the usage of any Standard Schema validator, we should properly document that as an ArkEnv feature in the advertised features list, ideally along with examples/use cases/a dedicated section, and anything else that comes to mind for proper documentation here.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Document support for any Standard Schema validator #500

---

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