♻️ 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/presets/__init__.py

@@ -0,0 +1,14 @@
+"""
+预设构建器模块
+包含预定义的UI组件构建器
+"""
+
+from .help_page import PluginHelpPageBuilder
+from .info_card import InfoCardBuilder
+from .plugin_menu import PluginMenuBuilder
+
+__all__ = [
+    "InfoCardBuilder",
+    "PluginHelpPageBuilder",
+    "PluginMenuBuilder",
+]

zhenxun/ui/builders/presets/help_page.py

@@ -0,0 +1,27 @@
+from ...models.presets.help_page import (
+    HelpCategory,
+    PluginHelpPageData,
+)
+from ..base import BaseBuilder
+
+
+class PluginHelpPageBuilder(BaseBuilder[PluginHelpPageData]):
+    """链式构建插件帮助页面的辅助类"""
+
+    def __init__(self, bot_nickname: str, page_title: str):
+        self._data = PluginHelpPageData(
+            bot_nickname=bot_nickname, page_title=page_title, categories=[]
+        )
+
+        super().__init__(self._data, template_name="pages/core/help_page")
+
+    def add_category(self, category: HelpCategory) -> "PluginHelpPageBuilder":
+        """添加一个帮助分类"""
+        self._data.categories.append(category)
+        return self
+
+    def add_categories(self, categories: list[HelpCategory]) -> "PluginHelpPageBuilder":
+        """批量添加帮助分类"""
+        for category in categories:
+            self.add_category(category)
+        return self

zhenxun/ui/builders/presets/info_card.py

@@ -0,0 +1,46 @@
+from typing import Any
+
+from ...models.presets.card import (
+    InfoCardData,
+    InfoCardMetadataItem,
+    InfoCardSection,
+)
+from ..base import BaseBuilder
+
+__all__ = ["InfoCardBuilder"]
+
+
+class InfoCardBuilder(BaseBuilder[InfoCardData]):
+    def __init__(self, title: str):
+        self._data = InfoCardData(title=title)
+
+        super().__init__(self._data, template_name="components/presets/info_card")
+
+    def add_metadata(self, label: str, value: str | int) -> "InfoCardBuilder":
+        self._data.metadata.append(InfoCardMetadataItem(label=label, value=value))
+        return self
+
+    def add_metadata_items(
+        self, items: list[tuple[str, Any]] | list[dict[str, Any]]
+    ) -> "InfoCardBuilder":
+        for item in items:
+            if isinstance(item, tuple):
+                self.add_metadata(item[0], item[1])
+            elif isinstance(item, dict):
+                self.add_metadata(item.get("label", ""), item.get("value", ""))
+        return self
+
+    def add_section(self, title: str, content: str | list[str]) -> "InfoCardBuilder":
+        content_list = [content] if isinstance(content, str) else content
+        self._data.sections.append(InfoCardSection(title=title, content=content_list))
+        return self
+
+    def add_sections(
+        self, sections: list[tuple[str, str | list[str]]] | list[dict[str, Any]]
+    ) -> "InfoCardBuilder":
+        for section in sections:
+            if isinstance(section, tuple):
+                self.add_section(section[0], section[1])
+            elif isinstance(section, dict):
+                self.add_section(section.get("title", ""), section.get("content", []))
+        return self

zhenxun/ui/builders/presets/plugin_menu.py

@@ -0,0 +1,37 @@
+from ...models.presets.plugin_menu import (
+    PluginMenuCategory,
+    PluginMenuData,
+)
+from ..base import BaseBuilder
+
+__all__ = ["PluginMenuBuilder"]
+
+
+class PluginMenuBuilder(BaseBuilder[PluginMenuData]):
+    """链式构建插件菜单的辅助类"""
+
+    def __init__(self, bot_name: str, bot_avatar_url: str, is_detail: bool = False):
+        self._data = PluginMenuData(
+            bot_name=bot_name,
+            bot_avatar_url=bot_avatar_url,
+            is_detail=is_detail,
+            plugin_count=0,
+            active_count=0,
+            categories=[],
+        )
+
+        super().__init__(self._data, template_name="pages/core/plugin_menu")
+
+    def add_category(self, category: PluginMenuCategory) -> "PluginMenuBuilder":
+        self._data.categories.append(category)
+        self._data.plugin_count += len(category.items)
+        self._data.active_count += sum(1 for item in category.items if item.status)
+        return self
+
+    def add_categories(
+        self, categories: list[PluginMenuCategory]
+    ) -> "PluginMenuBuilder":
+        for category in categories:
+            self.add_category(category)
+        return self
+