aisman

Session 159, Step 11: Fix child indentation, stale child status, and implement 4 workflow issues
- AIM-3042 Conflict dialog when generating next step with cross-session linked story
- AIM-3053 Prompt for additional stories linked to the current session
- AIM-3055 Link and switch the displayed linked session
- AIM-3081 Render link icon under story list row for linked stories
- AIM-3071 Child issues no longer indented under parent in Wf S1
- AIM-3072 Status labels not updated in parent's Children & Relations tab when child status changes in Wf S1

Outcome:
All 6 issues implemented:

1. Added `IssueParentId` to WorkflowController Select projection for tree building.
2. Added child-status propagation in `wfSaveStatusAndNote()` + fixed `GetChildren` statusId alias.
3. Updated `_isRealTitle` to recognize ~Session pattern, fixed `_getFilterSessionId` fallback, removed Cancel radio.
4. Changed suggestion icon color to `--aim-yellow` (warning), border to `rgba($warning, 0.7)`, button lighter.
5. Changed switch icon to `fa-crosshairs`; button uses same `aim-btn-xs` class as filter button.
6. Added `renderStoryList()` after link/unlink, added `_updateStoryLinkIconColors()` on selection change, dynamic icon color in `buildStoryItem`.