Implement client query and transaction utilities

[prdlk]

---

This issue was migrated from sonr-io/sonr2#209
Migration date: Fri Oct 3 03:17:22 PM EDT 2025

Description

Complete implementation of client query methods and transaction utilities.

TODO Locations

Query Client (client/query/client.go)

• GetChainInfo() - Line 137: Using Tendermint RPC client
• GetNodeInfo() - Line 147: Using Tendermint RPC client
• GetTransaction() - Line 333: Transaction query implementation
• SearchTransactions() - Line 339: Transaction search implementation

Gas Estimation (client/tx/gas.go)

• Line 189: Dynamic gas price discovery based on network conditions
• Line 196: Dynamic network gas info retrieval

Transaction Builder (client/tx/builder.go)

• Extract public key from DID or add GetPubKey method
• Fetch account number and sequence from chain

Keyring Manager (client/keys/keyring.go)

• Implement proper EnclaveConfig construction

Requirements

1. Integration with Tendermint RPC client
2. Dynamic gas price discovery algorithm
3. Proper account sequence handling
4. Enclave configuration for key management

Priority

Medium - Essential for transaction submission