feat(wasm-solana): add transaction parsing with full instruction decoding

Add comprehensive Solana transaction parsing to wasm-solana package with
BitGoJS-compatible output format.

Core Features:
- Parse serialized transactions into structured ParsedTransaction
- Decode all major instruction types to semantic InstructionParams
- Support for durable nonce transactions with NonceAdvance detection
- Full account metadata preservation for unknown instructions

Supported Programs:
- System Program: Transfer, CreateAccount, NonceAdvance, NonceInitialize
- Stake Program: Initialize, Delegate, Deactivate, Withdraw, Authorize,
  AuthorizeChecked
- SPL Token: Transfer, TransferChecked (with programId and decimalPlaces)
- SPL Associated Token Account: Create, Close
- Compute Budget: SetComputeUnitLimit, SetPriorityFee
- Memo Program: Memo instructions
- SPL Stake Pool (Jito): DepositSol, WithdrawStake

Instruction Combining (TypeScript):
- CreateAccount + NonceInitialize → CreateNonceAccount
- Staking patterns detected for NATIVE, JITO, and MARINADE types

The parser returns raw instructions; combining logic lives in TypeScript
for flexibility and easier maintenance.

Ticket: BTC-2929

Author: lcovar

packages/wasm-solana/Cargo.lock

@@ -3,6 +3,9 @@ name = "wasm-solana"
 version = "0.1.0"
 edition = "2021"
 
+[package.metadata.wasm-pack.profile.release]
+wasm-opt = false
+
 [lib]
 crate-type = ["cdylib", "rlib"]
 
@@ -12,17 +15,26 @@ all = "warn"
 [dependencies]
 wasm-bindgen = "0.2"
 js-sys = "0.3"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
 # Solana SDK crates
 solana-pubkey = { version = "2.0", features = ["curve25519"] }
 solana-keypair = "2.0"
 solana-signer = "2.0"
-# Ed25519 for deriving pubkey from 32-byte seed (solana-keypair expects 64-byte format)
-ed25519-dalek = { version = "2.1", default-features = false, features = ["std"] }
+solana-transaction = { version = "3.0", features = ["serde", "bincode"] }
+# Instruction decoder interfaces (official Solana crates)
+solana-system-interface = { version = "2.0", features = ["bincode"] }
+solana-stake-interface = { version = "2.0", features = ["bincode"] }
+solana-compute-budget-interface = { version = "2.0", features = ["borsh"] }
+# Serialization
+bincode = "1.3"
+borsh = "1.5"
+base64 = "0.22"
+serde-wasm-bindgen = "0.6"
+spl-stake-pool = { version = "2.0.3", features = ["no-entrypoint"] }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3"
-serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0"
 hex = "0.4"
 
 [profile.release]

packages/wasm-solana/Cargo.toml

@@ -6,7 +6,41 @@ void wasm;
 // Namespace exports for explicit imports
 export * as keypair from "./keypair.js";
 export * as pubkey from "./pubkey.js";
+export * as transaction from "./transaction.js";
+export * as parser from "./parser.js";
 
 // Top-level class exports for convenience
 export { Keypair } from "./keypair.js";
 export { Pubkey } from "./pubkey.js";
+export { Transaction } from "./transaction.js";
+
+// Top-level function exports
+export { parseTransaction } from "./parser.js";
+
+// Type exports
+export type { AccountMeta, Instruction } from "./transaction.js";
+export type {
+  ParsedTransaction,
+  DurableNonce,
+  InstructionParams,
+  TransferParams,
+  CreateAccountParams,
+  NonceAdvanceParams,
+  CreateNonceAccountParams,
+  NonceInitializeParams,
+  StakeInitializeParams,
+  StakingActivateParams,
+  StakingDeactivateParams,
+  StakingWithdrawParams,
+  StakingDelegateParams,
+  StakingAuthorizeParams,
+  SetComputeUnitLimitParams,
+  SetPriorityFeeParams,
+  TokenTransferParams,
+  CreateAtaParams,
+  CloseAtaParams,
+  MemoParams,
+  StakePoolDepositSolParams,
+  StakePoolWithdrawStakeParams,
+  UnknownInstructionParams,
+} from "./parser.js";