feat(server): enhance workflow step execution and JSONata integration

- Refactored step execution logic to introduce runCompiledStep for improved clarity and functionality.
- Added support for "set" steps, allowing context manipulation using JSONata expressions.
- Implemented evaluateJsonata and isJsonataTruthy functions for evaluating conditions and expressions.
- Updated workflow parsing to handle new step types and validation rules.
- Enhanced logging and error handling for skipped steps and invalid configurations.
- Modified UI components to reflect new step types and statuses, including "skipped".

packages/server/store.js

@@ -126,7 +126,7 @@ export async function startStep({ runId, index, script, config = null }) {
 
 /**
  * @param {string} id
- * @param {"success" | "failed"} status
+ * @param {"success" | "failed" | "skipped"} status
  * @param {unknown} [output]
  * @param {Error | unknown} [err]
  */