### What problem does this PR solve?
Feat: Change the style of all cards according to the design #10703
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Import dsl from agent list page #9869
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix: Optimized variable node display and Agent template multi-language
support #3221
- Modified the VariableNode component to add parent label and icon
properties
- Updated the VariablePickerMenuPlugin to support displaying parent
labels and icons
- Adjusted useBuildNodeOutputOptions and useBuildBeginVariableOptions to
pass new properties
- Optimized the Agent TemplateCard component to switch the title and
description based on the language
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Restore the button's background color #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Replace Avatar with RAGFlowAvatar component for knowledge base and
agent, optimize Agent template page, and modify bugs in knowledge base
#3221
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Create empty agent #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add AgentTemplates component. #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
