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_label_selector_networkmap.py

@@ -0,0 +1,47 @@
+from pathlib import Path
+p=Path(r'd:/Projects/Dev/ThreatHunt/frontend/src/components/NetworkMap.tsx')
+t=p.read_text(encoding='utf-8')
+
+# Add label selector in toolbar before refresh button
+insert_after="""        <TextField
+          size=\"small\"
+          placeholder=\"Search hosts, IPs, users\\u2026\"
+          value={search}
+          onChange={e => setSearch(e.target.value)}
+          sx={{ width: 220, '& .MuiInputBase-input': { py: 0.8 } }}
+          slotProps={{
+            input: {
+              startAdornment: <SearchIcon sx={{ mr: 0.5, fontSize: 18, color: 'text.secondary' }} />,
+            },
+          }}
+        />
+"""
+label_ctrl="""
+        <FormControl size=\"small\" sx={{ minWidth: 150 }}>
+          <InputLabel id=\"label-mode-selector\">Labels</InputLabel>
+          <Select
+            labelId=\"label-mode-selector\"
+            value={labelMode}
+            label=\"Labels\"
+            onChange={e => setLabelMode(e.target.value as LabelMode)}
+            sx={{ '& .MuiSelect-select': { py: 0.8 } }}
+          >
+            <MenuItem value=\"none\">None</MenuItem>
+            <MenuItem value=\"highlight\">Selected/Search</MenuItem>
+            <MenuItem value=\"all\">All</MenuItem>
+          </Select>
+        </FormControl>
+"""
+if 'label-mode-selector' not in t:
+    if insert_after not in t:
+        raise SystemExit('search block not found for label selector insertion')
+    t=t.replace(insert_after, insert_after+label_ctrl)
+
+# Fix useCallback dependency for startAnimLoop
+old='  }, [canvasSize]);'
+new='  }, [canvasSize, labelMode]);'
+if old in t:
+    t=t.replace(old,new,1)
+
+p.write_text(t,encoding='utf-8')
+print('inserted label selector UI and fixed callback dependency')