aisman

Direct session 40, Step 1: Complete AI output processing feature enhancement and project display improvements:
- Add processing property to JSON output schema with validation
- Implement file monitoring with running state UI and animated icon
- Create auto-processing settings system with session-type hierarchy
- Implement auto-process workflow with error/warning dialogs
- Add Process button for manual processing with out-of-order confirmation
- Add ProjectTotalDurationSeconds column to Project table
- Update Project model and API endpoints for duration and date fields
- Implement duration formatting in AMBwCdDhEm format
- Display project duration and first/last issue dates on project details UI
- Disable output viewer backdrop close behavior
- Add line numbers to output preview mode
- Add line/column/character counter to output preview
- Fix draggable dialog backdrop opacity restoration
- Update .aisman/instructions.md with processing property documentation
- Update aisman-instructions-template.md with processing property documentation
- Build SCSS and validate all code changes