Created test suite for Relay entity covering construction, state toggling,
and explicit state control methods. Tests intentionally fail as Relay
struct is not yet implemented.
Tests cover:
- Relay::new() with id, state, and optional label
- toggle() flipping state between On/Off
- turn_on() setting state to On
- turn_off() setting state to Off
TDD phase: RED - Tests written, implementation pending (T022)
Ref: T021 (specs/001-modbus-relay-control/tasks.md)
Implement smart constructor that validates relay IDs are within valid
range (1-8 for 8-channel relay controller). Add accessor method as_u8()
for safe access to inner value. Add comprehensive documentation to satisfy
clippy requirements.
TDD green phase: Tests from T017 now pass.
Ref: T018 (specs/001-modbus-relay-control/tasks.md)
Convert project from single backend to monorepo structure with separate
frontend (Vue 3 + TypeScript + Vite) and backend directories. Updates
all configuration files and build system to support both workspaces.
Ref: T007 (specs/001-modbus-relay-control)
