♻️ (various): refactor code to use underscore prefix for unused variables
✨ (ls_client.rs): add constants for WebSocket connection setup
✨ (various): add unimplemented!() stubs for methods to be implemented
🔥 (main.rs): remove unused imports and commented code
🔥 (ls_client.rs): remove unused HashMap import and commented code
🐛 (subscription.rs): fix get_command_value to correctly format key before lookup
🔧 (Cargo.toml): remove hyper dependency as it's no longer used
