aisman

Direct session 18, Step 1: Dashboard detail panel UI fixes and improvements
Issues -346 to -378 (33 issues):
- Issue detail panel fixes and improvements (-346, parent)
  - Fix parent hierarchy arrows and indentation (-347)
  - Fix outcome tab checkmark not showing (-348)
  - Fix tab memory fallback to first tab with content (-349)
  - Add triangle pointer SCSS styling (-350)
  - Replace back button with back/forward toolbar buttons (-351)
  - Move Cancelled status button to main bar (-352)
  - Continuous mode section separators and alternating bgs (-377)
  - Empty states for all tab content sections (-378)
- Tab system unification (-353, parent)
  - Rename aim-issue-tab to aim-detail-tab (-354)
  - Replace aim-sub-tab with aim-detail-tab (-355)
  - Tab checkmarks: default color inside aim-tab-badge (-356)
  - Standardize aim-tab-badge across panels (-357)
  - Tab mode switch accent color (-358)
- Outcome and separator improvements (-359, parent)
  - Reverse outcome tools order and restyle (-360)
  - Rename aim-outcome-sep to aim-inline-sep (-361)
  - Create aim-btm-section-sep reusable class (-362)
- Children & Relations tab overhaul (-363, parent)
  - Always show children/relations even when empty (-364)
  - Section titles with line-through-text pattern (-365)
  - Move add relation button next to heading (-366)
  - Add empty state messages (-367)
- Sessions & Steps display improvements (-368, parent)
  - Make step titles clickable to navigate (-369)
  - Step number badge styling (-370)
  - Hover row background highlight (-371)
- Move and rearrange fixes (-372, parent)
  - Move button one-off action (-373)
  - Fix rearrange sort order duplicate values (-374)
- Disable backdrop click close on dialogs (-375)
- Create shared.scss reusable pattern section (-376)

Files changed: dashboard.js, dashboard.scss, site.js, custom.js