Add Economics, Governance, and Mining SDKs for:
- Java: Full SDK with CompletableFuture async operations
- Kotlin: Coroutine-based SDK with suspend functions
- Swift: Modern Swift SDK with async/await
- Flutter/Dart: Complete Dart SDK with Future-based API
- C: Header files and implementations with opaque handles
- C++: Modern C++17 with std::future and PIMPL pattern
- C#: Records, async/await Tasks, and IDisposable
- Ruby: Struct-based types with Faraday HTTP client
Also includes minor Dart lint fixes (const exceptions).
Phase 3 SDK expansion - Flutter/Dart implementations:
- Database SDK: Multi-model database with Key-Value, Document,
Vector, and Time Series stores
- Hosting SDK: Decentralized web hosting with domain management,
DNS, deployments, and SSL provisioning
- Bridge SDK: Cross-chain asset transfers with lock-mint and
burn-unlock patterns
All SDKs follow consistent patterns with:
- Async/await API using Futures
- Proper error handling with typed exceptions
- Configurable retry logic and timeouts
- Full type safety with Dart's type system
