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_jobqueue_sync.py

@@ -0,0 +1,64 @@
+from pathlib import Path
+p=Path(r'd:/Projects/Dev/ThreatHunt/backend/app/services/job_queue.py')
+t=p.read_text(encoding='utf-8')
+ins='''\n\nasync def _sync_processing_task(job: Job):\n    """Persist latest job state into processing_tasks (if linked by job_id)."""\n    from datetime import datetime, timezone\n    from sqlalchemy import update\n\n    try:\n        from app.db import async_session_factory\n        from app.db.models import ProcessingTask\n\n        values = {\n            "status": job.status.value,\n            "progress": float(job.progress),\n            "message": job.message,\n            "error": job.error,\n        }\n        if job.started_at:\n            values["started_at"] = datetime.fromtimestamp(job.started_at, tz=timezone.utc)\n        if job.completed_at:\n            values["completed_at"] = datetime.fromtimestamp(job.completed_at, tz=timezone.utc)\n\n        async with async_session_factory() as db:\n            await db.execute(\n                update(ProcessingTask)\n                .where(ProcessingTask.job_id == job.id)\n                .values(**values)\n            )\n            await db.commit()\n    except Exception as e:\n        logger.warning(f"Failed to sync processing task for job {job.id}: {e}")\n'''
+marker='\n\n# -- Singleton + job handlers --\n'
+if ins.strip() not in t:
+    t=t.replace(marker, ins+marker)
+
+old='''            job.status = JobStatus.RUNNING
+            job.started_at = time.time()
+            job.message = "Running..."
+            logger.info(f"Worker {worker_id}: executing {job.id} ({job.job_type.value})")
+
+            try:
+'''
+new='''            job.status = JobStatus.RUNNING
+            job.started_at = time.time()
+            if job.progress <= 0:
+                job.progress = 5.0
+            job.message = "Running..."
+            await _sync_processing_task(job)
+            logger.info(f"Worker {worker_id}: executing {job.id} ({job.job_type.value})")
+
+            try:
+'''
+if old not in t:
+    raise SystemExit('worker running block not found')
+t=t.replace(old,new)
+
+old2='''                    job.completed_at = time.time()
+                    logger.info(f"Worker {worker_id}: completed {job.id} in {job.elapsed_ms}ms")
+            except Exception as e:
+                if not job.is_cancelled:
+                    job.status = JobStatus.FAILED
+                    job.error = str(e)
+                    job.message = f"Failed: {e}"
+                    job.completed_at = time.time()
+                    logger.error(f"Worker {worker_id}: failed {job.id}: {e}", exc_info=True)
+
+            # Fire completion callbacks
+'''
+new2='''                    job.completed_at = time.time()
+                    logger.info(f"Worker {worker_id}: completed {job.id} in {job.elapsed_ms}ms")
+            except Exception as e:
+                if not job.is_cancelled:
+                    job.status = JobStatus.FAILED
+                    job.error = str(e)
+                    job.message = f"Failed: {e}"
+                    job.completed_at = time.time()
+                    logger.error(f"Worker {worker_id}: failed {job.id}: {e}", exc_info=True)
+
+            if job.is_cancelled and not job.completed_at:
+                job.completed_at = time.time()
+
+            await _sync_processing_task(job)
+
+            # Fire completion callbacks
+'''
+if old2 not in t:
+    raise SystemExit('worker completion block not found')
+t=t.replace(old2,new2)
+
+p.write_text(t, encoding='utf-8')
+print('updated job_queue persistent task syncing')