solana-program v0.3.0

Added

• sRFC-37 support: Frozen Token-2022 accounts now trigger unclaimed flow
• Vault rent recovery: close_split_config now closes vault ATA (~0.017 SOL total recovered)

Changed

• close_split_config requires token_program account (+5,000 CU for vault CPI)
• execute_split validates canonical ATAs and frozen state (+300 CU per recipient)
• Non-canonical token accounts rejected to prevent funds sent to non-monitored accounts

Fixed

• Canonical ATA validation: All recipient and protocol ATAs must be derived via get_associated_token_address_with_program_id()