This PR addresses the critical documentation gap by implementing comprehensive, versioned API and smart contract documentation for the openSVM P2P Exchange platform.

📚 What's Added

Complete API Documentation Structure

• 9 comprehensive documentation files covering all aspects of the platform
• 4,890+ lines of detailed technical documentation
• Semantic versioning strategy with clear migration paths
• TypeScript examples for all operations

Core Documentation Files

Smart Contract APIs

• docs/api/smart-contracts.md - Complete instruction reference with 25+ documented instructions
• docs/api/account-structures.md - Detailed account specs with TypeScript interfaces
• docs/api/error-codes.md - 16 smart contract + wallet error codes with recovery strategies
• docs/api/events.md - Real-time event monitoring and parsing patterns

Integration Guides

• docs/api/wallet-operations.md - Secure wallet integration with multi-network support
• docs/api/transaction-flows.md - End-to-end implementation examples
• docs/api/examples/ - Ready-to-use TypeScript code examples

Maintenance

• docs/api/CHANGELOG.md - Version history and migration guides
• docs/api/README.md - Central documentation hub

🔧 Key Features

Smart Contract Coverage

• Admin Operations: Program initialization and management
• Offer Management: Create, list, accept, complete offers with escrow
• Dispute Resolution: Multi-juror voting system with evidence submission
• Reputation System: User rating and trade history tracking
• Reward System: Tokenized incentives for trading and governance

Developer Experience

• TypeScript Interfaces: Complete type definitions for all operations
• Error Handling: Comprehensive error classification and recovery patterns
• Security Guidelines: Input validation, access control, transaction monitoring
• Multi-Network Support: Solana, Sonic, Eclipse, svmBNB, s00n networks

Code Examples

// Creating an offer with proper escrow
const { offerPubkey, signature } = await createAndListOffer(program, seller, {
  amount: new BN(1 * LAMPORTS_PER_SOL), // 1 SOL
  fiatAmount: new BN(50000), // $500.00 in cents
  currency: 'USD',
  paymentMethod: 'Bank transfer - Chase Bank'
});

📖 Documentation Quality

Comprehensive Coverage

• All 25+ smart contract instructions documented with parameters, behaviors, and error conditions
• Account structures with PDA derivations and size calculations
• Event monitoring patterns for real-time UI updates
• Transaction patterns from basic trades to complex dispute resolution

Developer-Friendly

• Clear explanations with practical examples
• Cross-referenced navigation between related concepts
• Troubleshooting guides with common error scenarios
• Best practices for security and performance

🚀 Impact

This documentation enables:

• Faster developer onboarding with complete reference materials
• Reduced integration errors through comprehensive examples
• Better security with documented best practices
• Future-proof development with versioning strategy

📋 Updated Files

New Documentation

• docs/api/README.md - Central documentation hub
• docs/api/smart-contracts.md - Complete smart contract API
• docs/api/account-structures.md - Account specifications
• docs/api/wallet-operations.md - Wallet integration guide
• docs/api/error-codes.md - Error handling reference
• docs/api/events.md - Event monitoring guide
• docs/api/transaction-flows.md - Implementation examples
• docs/api/CHANGELOG.md - Version history
• docs/api/examples/ - Code examples directory

Updated References

• README.md - Added links to new API documentation
• docs/README.md - Updated API reference section
• docs/smart-contract-api.md - Added migration notice to new docs

The platform now has enterprise-grade documentation that matches the sophistication of the smart contract architecture.

Fixes #64.

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