feat: add knowledge markdown formatting and detail retrieval

- Implemented KnowledgeWebsiteMarkdownPrompt for formatting webpage content into Markdown.
- Added GetItemDetail method in KnowledgeHandler to retrieve knowledge item details.
- Introduced KnowledgeDetailDrawer component for displaying knowledge item details in the admin web interface.
- Created MarkdownPreview component for rendering Markdown content.
- Added knowledge chunking and URL parsing logic to handle webpage content extraction and formatting.
- Updated database schema to include markdown_content in knowledge_items table.

server/internal/tenant/transport/article_handler.go

@@ -27,8 +27,10 @@ func NewArticleHandler(a *bootstrap.App) *ArticleHandler {
 		a.RetrievalProvider,
 		a.VectorStore,
 		a.ObjectStorage,
+		a.LLM,
 		a.Logger,
 		a.Config.Retrieval,
+		a.Config.LLM,
 		0,
 		0,
 	)