aisman

Session 71, Step 4: Validation fix, resolved stories styling, keep loaded items, remove GetSummaries, fix animations, settings guard
- Fix output file validation: accept `id` in relations for existing issues
- Render resolved stories as gray in Latest stories MRU section
- Keep loaded story items in memory; use hide/show instead of remove/reload
- Combine MRU loading with initial story list load; remove GetSummaries endpoint for stories
- Remove GetSummaries endpoints for Issues and Sessions controllers; integrate MRU into initial load
- AIM-1041 Workflow Select issues: slideUp animation after saving status/note
- AIM-1049 Settings tab: unsaved changes guard on tab switch