aisman

Direct session 31, Step 1: Improve output file viewer UI with line wrapping and error handling
- Fix line numbering to show actual lines with visual wrapping in output viewer
- Add JSON preview button with syntax highlighting in output file viewer
- Distinguish server-side errors from client-side validation errors in output files

Direct session 32, Step 1: Move SessionStepInputText to UserStory table:
- SQL migration: move SessionStepInputText to UserStory and drop column
- Add UserStory C# model and register in DbContext
- Remove SessionStepInputText from SessionStep C# model
- Update WorkflowController to save input text to UserStory