✨ Features:- Complete Anchor-based Solana program demonstrating Cross-Program Invocations (CPI)- 5 different CPI patterns: initialize, token transfer, SOL transfer, multiple CPIs, PDA authority- Comprehensive TypeScript client tests with multiple test approaches- Detailed documentation with code examples and explanations🔧 Technical Implementation:- Anchor framework with version 0.31.1 compatibility- SPL Token and System Program CPI integrations- Program Derived Address (PDA) authority patterns- Account validation and state management- Multiple test suites for different scenarios📚 Educational Value:- Detailed comments explaining each CPI step- README with comprehensive documentation- Code examples for common CPI patterns- Best practices for Anchor CPI development✅ Testing:- Program builds and compiles successfully- Deploys to local test validator- Runtime verification of CPI functionality- Multiple test approaches (Anchor workspace, custom tests)Resolvessolana-developers#393