Achieve 80% Unit Test Coverage

Achieve comprehensive unit test coverage across all Go packages in the fabric-x-evm codebase to ensure code quality and facilitate safe refactoring. Write unit tests for all public functions and methods, focusing on testing business logic in isolation using mocks for external dependencies like Fabric clients, database connections, and EVM execution. Use Go's testing framework with table-driven tests for comprehensive input coverage, implement test helpers to reduce boilerplate, and use code coverage tools to identify untested code paths. Aim for 100% coverage of critical components like SnapshotDB, endorsement logic, transaction parsing, and API handlers. Set up coverage reporting in CI to prevent coverage regressions.

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**Quarter:** Q2

Start by inventorying the Go packages and running the existing unit tests with coverage tools to identify untested paths. Focus areas named in the issue include SnapshotDB, endorsement logic, transaction parsing, API handlers, and mocks for Fabric clients, database connections, and EVM execution. Done means comprehensive unit tests, coverage reporting in CI, and no coverage regressions.

Written by the indexing model from the issue text.