Implement DEX module ICA operations and cross-chain functionality

[prdlk]

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This issue was migrated from sonr-io/sonr2#223
Migration date: Fri Oct 3 03:17:12 PM EDT 2025

Summary

Complete the implementation of DEX module's Interchain Account (ICA) operations for cross-chain trading functionality.

TODO Locations

Message Server (x/dex/keeper/msg_server.go)

• Line 55-78: ExecuteSwap - Implement cross-chain swap execution via ICA
• Line 81-105: ProvideLiquidity - Implement cross-chain liquidity provision
• Line 108-132: RemoveLiquidity - Implement cross-chain liquidity removal
• Line 135-160: CreateLimitOrder - Implement cross-chain limit order creation
• Line 163-188: CancelOrder - Implement cross-chain order cancellation

Query Server (x/dex/keeper/query_server.go)

• Line 83-93: Balance - Implement cross-chain balance query via IBC
• Line 106-115: Pool - Implement cross-chain liquidity pool query
• Line 127-139: Orders - Implement order book query for user's limit orders
• Line 151-164: History - Implement transaction history query from DWN storage

IBC Module (x/dex/ibc_module.go)

• Line 57-69: Implement ICA Controller channel handshake and acknowledgment
• Line 79-99: Handle ICA Controller channel setup and close
• Line 122-132: Handle ICA packet acknowledgments and timeouts

Integration Points

• x/dex/keeper/did_integration.go:38: Implement proper controller verification
• x/dex/keeper/dwn_integration.go:189-231: Implement actual DWN storage operations

Tasks

• Implement ICA packet construction for each operation type
• Add DID/UCAN validation for authorization
• Integrate with DWN for transaction history storage
• Add proper error handling and retry logic
• Create comprehensive test coverage
• Document ICA message formats for each DEX operation