feat: add Token 2022 program support

[GuiBibeau]

Summary

Adds Token 2022 (Token Extensions) program support to the SPL token helper.

Changes

• Add @solana-program/token-2022 dependency to pnpm catalog
• Create detectTokenProgram() utility for automatic program detection
• Update SplTokenHelper to use correct instructions based on program
• Support tokenProgram: 'auto' configuration option
• Export TOKEN_2022_PROGRAM_ADDRESS constant
• Update documentation with Token 2022 examples

Usage

// Auto-detect (recommended for existing mints)
const token = client.splToken({
  mint: 'TOKEN_2022_MINT',
  tokenProgram: 'auto'
});

// Explicit
import { TOKEN_2022_PROGRAM_ADDRESS } from '@solana/client';
const token = client.splToken({
  mint: 'MINT',
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

Test plan

• Verify standard Token Program transfers still work
• Test Token 2022 transfer with explicit program address
• Test Token 2022 transfer with auto-detection
• Verify ATA creation works for Token 2022 mints
• Test balance fetching for Token 2022 mints

Closes #148

[vercel]

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Project	Deployment	Review	Updated (UTC)
framework-kit-docs	Ready	Preview, Comment	Jan 13, 2026 10:45am