♻️ refactor: 统一图片渲染架构并引入通用UI组件系统

🎨 **渲染服务重构**
- 统一图片渲染入口，引入主题系统支持
- 优化Jinja2环境管理，支持主题覆盖和插件命名空间
- 新增UI缓存机制和主题重载功能

✨ **通用UI组件系统**
- 新增 zhenxun.ui 模块，提供数据模型和构建器
- 引入BaseBuilder基类，支持链式调用
- 新增多种UI构建器：InfoCard, Markdown, Table, Chart, Layout等
- 新增通用组件：Divider, Badge, ProgressBar, UserInfoBlock

🔄 **插件迁移**
- 迁移9个内置插件至新渲染系统
- 移除各插件中分散的图片生成工具
- 优化数据处理和渲染逻辑

💥 **Breaking Changes**
- 移除旧的图片渲染接口和模板路径
- TEMPLATE_PATH 更名为 THEMES_PATH
- 插件需适配新的RendererService和zhenxun.ui模块

zhenxun/ui/models/__init__.py

@@ -0,0 +1,84 @@
+from .charts import (
+    BarChartData,
+    BaseChartData,
+    LineChartData,
+    LineChartSeries,
+    PieChartData,
+    PieChartDataItem,
+)
+from .components.badge import Badge
+from .components.divider import Divider, Rectangle
+from .components.progress_bar import ProgressBar
+from .components.user_info_block import UserInfoBlock
+from .core.base import RenderableComponent
+from .core.layout import LayoutData, LayoutItem
+from .core.markdown import (
+    CodeElement,
+    HeadingElement,
+    ImageElement,
+    ListElement,
+    ListItemElement,
+    MarkdownData,
+    MarkdownElement,
+    QuoteElement,
+    RawHtmlElement,
+    TableElement,
+    TextElement,
+)
+from .core.notebook import NotebookData, NotebookElement
+from .core.table import (
+    BaseCell,
+    ImageCell,
+    StatusBadgeCell,
+    TableCell,
+    TableData,
+    TextCell,
+)
+from .presets.card import InfoCardData, InfoCardMetadataItem, InfoCardSection
+from .presets.help_page import HelpCategory, HelpItem, PluginHelpPageData
+from .presets.plugin_menu import PluginMenuCategory, PluginMenuData, PluginMenuItem
+
+__all__ = [
+    "Badge",
+    "BarChartData",
+    "BaseCell",
+    "BaseChartData",
+    "CodeElement",
+    "Divider",
+    "HeadingElement",
+    "HelpCategory",
+    "HelpItem",
+    "ImageCell",
+    "ImageElement",
+    "InfoCardData",
+    "InfoCardMetadataItem",
+    "InfoCardSection",
+    "LayoutData",
+    "LayoutItem",
+    "LineChartData",
+    "LineChartSeries",
+    "ListElement",
+    "ListItemElement",
+    "MarkdownData",
+    "MarkdownElement",
+    "NotebookData",
+    "NotebookElement",
+    "PieChartData",
+    "PieChartDataItem",
+    "PluginHelpPageData",
+    "PluginMenuCategory",
+    "PluginMenuData",
+    "PluginMenuItem",
+    "ProgressBar",
+    "QuoteElement",
+    "RawHtmlElement",
+    "Rectangle",
+    "RenderableComponent",
+    "StatusBadgeCell",
+    "TableCell",
+    "TableData",
+    "TableElement",
+    "TextCell",
+    "TextElement",
+    "UserInfoBlock",
+]