Add Workflow History to Track Workflow State at Run Execution Time

[ctate]

Problem:

Currently when users view workflow run results, they can only see the current state of the workflow definition. If a workflow has been modified since a run was executed, there is no way to see what the workflow actually looked like at the time that specific run was executed. This makes it difficult to debug issues, understand historical behavior, or audit changes.

Current Behavior:

• Users can execute workflows and see run results
• Users can view and edit workflow definitions
• No connection between a run and the workflow definition that produced it
• Changes to workflows affect the context for viewing all historical runs

Desired Behavior:

Users should be able to see exactly what the workflow configuration looked like when any given run was executed. This includes the full workflow definition with all nodes, edges, configuration, and settings as they existed at execution time.