Background
Unvalidated addresses reach ethers calls and produce opaque failures. Validate address format first.
Files to modify (2-3)
src/services/ethersService.ts
src/utils/error-handler.ts
Acceptance Criteria
Implemented across the listed files
Unit/integration tests added or updated and passing
No regression; follows project coding standards
Background
Unvalidated addresses reach ethers calls and produce opaque failures. Validate address format first.
Files to modify (2-3)
src/services/ethersService.ts
src/utils/error-handler.ts
Acceptance Criteria
Implemented across the listed files
Unit/integration tests added or updated and passing
No regression; follows project coding standards