feat: fixed issues of note management

Issues Fixed

- Missing pagination fields in API response schemas (page, page_size, has_more)
- NOTE enum missing from frontend Zod schema
- Missing fields in DocumentRead response construction (content_hash, updated_at)
- BlockNote slash menu clipped by overflow-hidden CSS
- Sidebar click conflicts - hidden action buttons intercepting clicks
- Rewrote All Notes sidebar - replaced fragile custom portal with shadcn Sheet
- Missing translation keys for new UI strings
- Missing NOTE retrieval logic in researcher agent
- Added search to All Notes sidebar
- Removed frontend logging - was causing toasters on every page refresh
- Added backend logging to document reindex Celery task

surfsense_web/messages/zh.json

@@ -645,6 +645,10 @@
 		"search_space": "搜索空间",
 		"notes": "笔记",
 		"all_notes": "所有笔记",
+		"all_notes_description": "浏览和管理您的所有笔记",
+		"search_notes": "搜索笔记...",
+		"no_results_found": "未找到笔记",
+		"try_different_search": "尝试其他搜索词",
 		"no_notes": "暂无笔记",
 		"create_new_note": "创建新笔记",
 		"error_loading_notes": "加载笔记时出错",