SDK v0.7.0

BREAKING CHANGES

• Complete API restructure: /web3 and /kit exports replaced with unified /solana export
• Removed: kit/, web3/, react/ modules entirely
• Removed: SplitsProvider, React hooks (useSplits, useCreateSplit, etc.)
• Removed: Zod schemas (schemas.ts, schemas-mini.ts)
• Removed: Old instruction builders

Added

• Codama-generated instruction encoders in /solana/generated
• Manual instruction builders with correct remaining accounts:
  • createSplitConfig - includes recipient ATAs as remaining accounts
  • executeSplit - returns discriminated union { ok, instruction } or { ok: false, reason }
  • updateSplitConfig - includes recipient ATAs for validation
  • closeSplitConfig - recovers vault rent
• Web3.js compatibility bridge (/solana/web3-compat):
  • toAddress(), toPublicKey(), toKitSigner()
  • toWeb3Instruction(), fromWeb3Instruction()
• Helper utilities:
  • getSplitConfigFromVault() - vault-centric API
  • getProtocolConfig(), getVaultBalance(), isCascadeSplit()
  • PDA derivation: deriveSplitConfig(), deriveVault(), deriveAta()
  • generateUniqueId() for random unique IDs

Changed

• SDK now requires @solana/kit as peer dependency
• Main export provides types, constants, and conversion helpers only
• All Solana functionality moved to /solana subpath