aisman

Direct session 48, Step 1: Issue lines, UserStoryNum trigger, UserEpic, workflow step 2 stories sidebar:
- Workflow step 2 user stories sidebar — parent
- Add IssueLinesAdded/IssueLinesRemoved to Issue C# model and process in output
- Add issue-level lines to template explanation table
- Add UserStoryNum to UserStory C# model
- SQL trigger for UserStoryNum auto-increment per project and backfill
- Create UserEpic C# model and add to DbContext
- SQL triggers for UserEpic story counts
- Update AismanContext with UserEpicId FK on UserStory and all new properties
- Workflow step 2 sidebar HTML structure
- User stories API endpoints (CRUD, list, sort, bulk save)
- Story list rendering with epic groups and filtering
- Story drag-drop sorting and move mode
- Story detail panel with editable title
- Story localStorage periodic autosave and restore
- Unsaved stories browser close handling
- Alt+click split view for stories
- Story toolbar buttons (Show executed, Show others, Back/Forward)
- Cancel edit restores original version
- Story processed detection via output file inputText
- SCSS styles for workflow step 2 sidebar