♻️ 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/builders/widgets/progress_bar.py

@@ -0,0 +1,42 @@
+from typing import Literal
+
+from ...models.components.progress_bar import ProgressBar
+from ..base import BaseBuilder
+
+
+class ProgressBarBuilder(BaseBuilder[ProgressBar]):
+    """链式构建进度条组件的辅助类"""
+
+    def __init__(
+        self,
+        progress: float,
+        label: str | None = None,
+        color_scheme: Literal[
+            "primary", "success", "warning", "error", "info"
+        ] = "primary",
+        animated: bool = False,
+    ):
+        data_model = ProgressBar(
+            progress=progress,
+            label=label,
+            color_scheme=color_scheme,
+            animated=animated,
+        )
+        super().__init__(data_model, template_name="components/widgets/progress_bar")
+
+    def set_label(self, label: str) -> "ProgressBarBuilder":
+        """设置进度条上显示的文本。"""
+        self._data.label = label
+        return self
+
+    def set_color_scheme(
+        self, color_scheme: Literal["primary", "success", "warning", "error", "info"]
+    ) -> "ProgressBarBuilder":
+        """设置进度条的颜色方案。"""
+        self._data.color_scheme = color_scheme
+        return self
+
+    def set_animated(self, animated: bool = True) -> "ProgressBarBuilder":
+        """设置进度条是否显示动画效果。"""
+        self._data.animated = animated
+        return self