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.

_edit_upload2.py

@@ -0,0 +1,42 @@
+from pathlib import Path
+p=Path(r'd:/Projects/Dev/ThreatHunt/frontend/src/components/FileUpload.tsx')
+t=p.read_text(encoding='utf-8')
+marker='''      {/* Per-file progress list */}
+'''
+add='''      {huntId && huntProgress && (
+        <Paper sx={{ p: 1.5, mt: 1.5 }}>
+          <Stack direction="row" alignItems="center" spacing={1} sx={{ mb: 0.8 }}>
+            <Typography variant="body2" sx={{ fontWeight: 600 }}>
+              Master Processing Progress
+            </Typography>
+            <Chip
+              size="small"
+              label={huntProgress.status.toUpperCase()}
+              color={huntProgress.status === 'ready' ? 'success' : huntProgress.status === 'processing' ? 'warning' : 'default'}
+              variant="outlined"
+            />
+            <Box sx={{ flexGrow: 1 }} />
+            <Typography variant="caption" color="text.secondary">
+              {huntProgress.progress_percent.toFixed(1)}%
+            </Typography>
+          </Stack>
+          <LinearProgress
+            variant="determinate"
+            value={Math.max(0, Math.min(100, huntProgress.progress_percent))}
+            sx={{ height: 8, borderRadius: 4 }}
+          />
+          <Stack direction="row" spacing={1} sx={{ mt: 1 }} flexWrap="wrap" useFlexGap>
+            <Chip size="small" label={`Datasets ${huntProgress.dataset_completed}/${huntProgress.dataset_total}`} variant="outlined" />
+            <Chip size="small" label={`Active jobs ${huntProgress.active_jobs}`} variant="outlined" />
+            <Chip size="small" label={`Queued jobs ${huntProgress.queued_jobs}`} variant="outlined" />
+            <Chip size="small" label={`Network ${huntProgress.network_status}`} variant="outlined" />
+          </Stack>
+        </Paper>
+      )}
+
+'''
+if marker not in t:
+    raise SystemExit('marker not found')
+t=t.replace(marker, add+marker)
+p.write_text(t,encoding='utf-8')
+print('inserted master progress block')