feat(ovsm): Add comprehensive Solana program macros

Round 2 Features:
- get-ata: Derive Associated Token Account addresses
- assert-signer, assert-writable, assert-owner: Validation with abort
- is-signer, is-writable: Query functions without abort
- zerocopy-load, zerocopy-store: Direct memory access to account data
- account-data-len, account-lamports: Account metadata accessors

Round 3 Features:
- emit-event: Anchor-style event emission with discriminator
- emit-log: Simple message + values logging
- clock-unix-timestamp, clock-epoch: Clock sysvar access
- rent-minimum-balance: Rent exemption calculation
- instruction-count, current-instruction-index: Instructions sysvar
- assert-not-cpi: Anti-CPI guard for re-entrancy protection
- pda-cache-init, pda-cache-store, pda-cache-lookup: Bump caching
- derive-pda-cached: PDA derivation with cache integration

All macros compile to sBPF and have been tested.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 0xrinegade