Support hosting presets in arkenv init (Phase 1)

[yamcodes]

This was generated by AI during triage.

Agent Brief

Category: enhancement
Summary: Support hosting presets in arkenv init (Phase 1)

Current behavior:
arkenv init creates a boilerplate configuration (env.ts) with default variables (DATABASE_URL, NEXT_PUBLIC_API_URL, etc.). It does not offer any hosting-specific environment variables.

Desired behavior:

1. During arkenv init, prompt the user: "Select a hosting provider preset (optional)" with options:
   • None (default)
   • Vercel
   • Netlify
2. If a provider is selected:
   • Add their standard environment variables to the generated schema in env.ts (using correct framework prefixes e.g. NEXT_PUBLIC_ for Next.js, NUXT_PUBLIC_ for Nuxt, VITE_ for Vite).

Preset Schemas (for ArkType validator):

• Vercel:
  • VERCEL: "string?"
  • VERCEL_ENV: "'production' | 'preview' | 'development'?"
  • VERCEL_URL: "string?"
  • <prefix>VERCEL_ENV: "'production' | 'preview' | 'development'?"
  • <prefix>VERCEL_URL: "string?"
• Netlify:
  • NETLIFY: "string?"
  • CONTEXT: "'production' | 'deploy-preview' | 'branch-deploy'?"
  • URL: "string?"
  • DEPLOY_URL: "string?"
  • <prefix>CONTEXT: "'production' | 'deploy-preview' | 'branch-deploy'?"
  • <prefix>URL: "string?"

(Note: Generate equivalent schemas for Zod and Valibot validators based on the target validator chosen during init).

Key interfaces:

• ProjectOptions type (add optional hostPreset field).
• Prompts in init command (use @clack/prompts select).
• Templates under packages/arkenv/src/features/scaffold/templates/ (add hostPreset variables to templates).

Acceptance criteria:

• Running arkenv init prompts the user for a hosting provider.
• Selecting Vercel or Netlify adds the corresponding preset variables to the generated schema.
• Generated client-side variables dynamically use the detected framework's prefix.
• Core package runtime remains completely untouched.

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[abhimanyutiwaribot]

Hi @yamcodes,

I would love to work on this! I have already researched Phase 1 and put together a fully working prototype of the hosting presets wizard and codegen templates (supporting Vercel and Netlify presets dynamically adapted to client prefixes across Zod, Valibot, and ArkType).

All unit tests are passing successfully locally. Could you please assign this issue to me so I can open a Pull Request? Thank you!