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_networkmap_hit.py

@@ -0,0 +1,59 @@
+from pathlib import Path
+p=Path(r'd:/Projects/Dev/ThreatHunt/frontend/src/components/NetworkMap.tsx')
+t=p.read_text(encoding='utf-8')
+insert='''
+function isPointOnNodeLabel(node: GNode, wx: number, wy: number, vp: Viewport): boolean {
+  const fontSize = Math.max(9, Math.round(12 / vp.scale));
+  const approxCharW = Math.max(5, fontSize * 0.58);
+  const line1 = node.label || '';
+  const line2 = node.meta.ips.length > 0 ? node.meta.ips[0] : '';
+  const tw = Math.max(line1.length * approxCharW, line2 ? line2.length * approxCharW : 0);
+  const px = 5, py = 2;
+  const totalH = line2 ? fontSize * 2 + py * 2 : fontSize + py * 2;
+  const lx = node.x, ly = node.y - node.radius - 6;
+  const rx = lx - tw / 2 - px;
+  const ry = ly - totalH;
+  const rw = tw + px * 2;
+  const rh = totalH;
+  return wx >= rx && wx <= (rx + rw) && wy >= ry && wy <= (ry + rh);
+}
+
+'''
+if 'function isPointOnNodeLabel' not in t:
+    t=t.replace('// == Hit-test =============================================================\n', '// == Hit-test =============================================================\n'+insert)
+
+old='''function hitTest(
+  graph: Graph, canvas: HTMLCanvasElement, clientX: number, clientY: number, vp: Viewport,
+): GNode | null {
+  const { wx, wy } = screenToWorld(canvas, clientX, clientY, vp);
+  for (const n of graph.nodes) {
+    const dx = n.x - wx, dy = n.y - wy;
+    if (dx * dx + dy * dy < (n.radius + 5) ** 2) return n;
+  }
+  return null;
+}
+'''
+new='''function hitTest(
+  graph: Graph, canvas: HTMLCanvasElement, clientX: number, clientY: number, vp: Viewport,
+): GNode | null {
+  const { wx, wy } = screenToWorld(canvas, clientX, clientY, vp);
+
+  // Node-circle hit has priority
+  for (const n of graph.nodes) {
+    const dx = n.x - wx, dy = n.y - wy;
+    if (dx * dx + dy * dy < (n.radius + 5) ** 2) return n;
+  }
+
+  // Then label hit (so clicking text works too)
+  for (const n of graph.nodes) {
+    if (isPointOnNodeLabel(n, wx, wy, vp)) return n;
+  }
+
+  return null;
+}
+'''
+if old not in t:
+    raise SystemExit('hitTest block not found')
+t=t.replace(old,new)
+p.write_text(t,encoding='utf-8')
+print('updated NetworkMap hit-test for labels')