Notes #

• First 0.1.0 release of this package.

Features #

Initial scaffold for 18 core packages forming the foundation and middle layers of

the Solana Kit dependency graph. Each package has its pubspec.yaml with correct workspace dependencies, shared analysis_options.yaml, and an empty barrel export file ready for implementation.

Package groups scaffolded:

• Crypto & Identity: addresses (base58), keys (Ed25519), signers (interfaces)
• Codecs: core interfaces, numbers, strings, data structures, umbrella re-export
• Utilities: functional (pipe/compose), options (Rust-like Option codec), fast_stable_stringify, subscribable (reactive patterns)
• Transaction Building: instructions, instruction_plans, transaction_messages, transactions (compilation & signing)
• Other: offchain_messages, test_matchers

Implement instruction plans package ported from @solana/instruction-plans.

solana_kit_instruction_plans (215 tests):

• InstructionPlan sealed class hierarchy: SingleInstructionPlan, SequentialInstructionPlan, ParallelInstructionPlan, MessagePackerInstructionPlan
• TransactionPlan sealed class hierarchy: SingleTransactionPlan, SequentialTransactionPlan, ParallelTransactionPlan
• TransactionPlanResult sealed class hierarchy with successful, failed, canceled, sequential, and parallel result types
• createTransactionPlanner converting instruction plans to transaction plans with size-aware message packing
• createTransactionPlanExecutor for executing transaction plans with context propagation
• MessagePacker with linear, instruction-based, and realloc message packer factories
• Tree traversal utilities: findInstructionPlan, everyInstructionPlan, transformInstructionPlan, flattenTransactionPlan
• Type guards and assertions for all plan types
• appendTransactionMessageInstructionPlan helper for adding instructions to messages
• passthroughFailedTransactionPlanExecution for error handling passthrough
• TransactionPlanResultSummary with summarizeTransactionPlanResult for result aggregation