aisman

feat(issues): Issues tab improvements step 2 (#-308)

- Merge Rearrange/Load-resolved buttons into view-toggle toolbar row
- Add rearrange toggle active state matching height buttons
- Load-resolved: empty state message, scroll-to-section, re-click scrolls
- Collapsible list sections with animated chevron icon
- Fix parent hierarchy: fa-level-up-alt arrow, faded parent title, no 'Child' in meta
- 'Show previous ancestor' button (xs outline, only when grandparent exists)
- Fix tab mode: single green toggle switch (replaces broken dual switch)
- Fix tab content layout: flex column, header fixed, only content scrolls
- Continuous mode: all panes visible, tab click scrolls to pane, section titles shown
- Status buttons: text labels (Partial/Errors/Done/AI) + icon colors (yellow/red/green/accent)
- Status popup menu: proper top-left dropdown position, icons for all items
- Notes tab: guidance hint below notes and in empty state
- Sessions & steps: styled .aim-issue-session-block cards, numbered step badges
- Unify sub-tab badge style (match .aim-tab-badge)
- Rename 'AI Sessions' tab to 'AI sessions' (sentence case)
- Session header link navigates to AI sessions tab and selects session
- Tab badges: count on Sessions & Steps; checkmark on Description/Result tabs
- Tab memory: S.manualIssueTab persists chosen tab across issue selection
- Add 'Data loading efficiency rules' to .github/copilot-instructions.md
- Client-side cache: CACHE_STALE_MS=21600000, cacheSet/cacheGet/cacheHas helpers
- Re-click already-selected issue navigates back (navigateBack())
- Task type icon color: .type-4 now uses $accent instead of $text-dim
- Fix triangle pointer: getBoundingClientRect positioning, synced with list scroll
- Fix drag-and-drop: .aim-drop-indicator visual line, moveIssuesAfter() on drop
- Fix rearrange mode: selection + moveIssuesAfter() end-to-end
- Fix Move button: enters rearrange mode, click-target calls moveIssuesAfter()
- Children & Relations: .aim-cr-heading with count badge + add button, .aim-cr-separator
- Fix status popup close: namespaced click.statusMenu handler, stopPropagation on open
- Outcome tab: result text first, .aim-outcome-tools right-aligned below separator
- SQL: 009_ImplementedByAI_Status.sql — insert ID=2, shift IDs 2-6 → 3-7
- Update all code for shifted status IDs (controllers, JS, SCSS)
- Update .aisman/instructions.md status table (7 entries)