feat(search): Optimized search functionality and user interface #3221 (#9535)

### What problem does this PR solve?

feat(search): Optimized search functionality and user interface #3221
### Type of change
- Added similarity threshold adjustment function
- Optimized mind map display logic
- Adjusted search settings interface layout
- Fixed related search and document viewing functions
- Optimized time display and node selection logic

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/agent/log-sheet/tool-timeline-item.tsx

@@ -158,8 +158,9 @@ const ToolTimelineItem = ({
                           </span>
                         )}
                         <span className="text-text-secondary text-xs">
-                          {/* 0:00
-                          {x.data.elapsed_time?.toString().slice(0, 6)} */}
+                          {/* 0:00*/}
+                          {tool.elapsed_time?.toString().slice(0, 6) || ''}
+                          {tool.elapsed_time ? 's' : ''}
                         </span>
                         <span
                           className={cn(