feat: Add Playbook Manager, Saved Searches, and Timeline View components

- Implemented PlaybookManager for creating and managing investigation playbooks with templates.
- Added SavedSearches component for managing bookmarked queries and recurring scans.
- Introduced TimelineView for visualizing forensic event timelines with zoomable charts.
- Enhanced backend processing with auto-queued jobs for dataset uploads and improved database concurrency.
- Updated frontend components for better user experience and performance optimizations.
- Documented changes in update log for future reference.

_fix_aup_dep.py

@@ -0,0 +1,12 @@
+from pathlib import Path
+p=Path(r'd:/Projects/Dev/ThreatHunt/frontend/src/components/AUPScanner.tsx')
+t=p.read_text(encoding='utf-8')
+old='''  }, [selectedDs, selectedThemes, scanHunts, scanAnnotations, scanMessages, enqueueSnackbar]);
+'''
+new='''  }, [selectedHuntId, selectedDs, selectedThemes, scanHunts, scanAnnotations, scanMessages, enqueueSnackbar]);
+'''
+if old not in t:
+    raise SystemExit('runScan deps block not found')
+t=t.replace(old,new)
+p.write_text(t,encoding='utf-8')
+print('fixed AUPScanner runScan dependency list')