Merge branch 'master' of http://192.168.0.200/knowledge-base-bj/deerflow-code into master-nj

# Conflicts:
#	frontend-web/src/components/workspace/messages/message-group.tsx
#	offline-backend-20260512/backend/packages/harness/deerflow/agents/lead_agent/prompt.py

offline-backend-20260512/backend/README.md

@@ -679,6 +679,29 @@ login and theme query parameters, each shortcut may include ordered keyless
 it as an encoded path segment (including inside a `#/…` hash route); password
 remains an ordinary login query parameter with the key `password`.
 
+### Citation display settings
+
+Reference-mode entry points are controlled by `citation_display` in
+`.deer-flow/system_settings.json`. `reference_mode_enabled` defaults to `false`;
+when disabled, the frontend hides the "参考文献" composer button in both the
+normal workspace and iframe chat, and hides the per-user RAG citation toggle
+from appearance settings. Conversations with selected LLMWiki knowledge bases
+still show their source documents in the reference panel even when the manual
+entry is hidden. `GET /api/system-settings/citation-display` is
+readable by logged-in users so the UI can decide whether to expose the entry;
+`PUT /api/system-settings/citation-display` is admin-only and supports partial
+updates for both `reference_mode_enabled` and `cleanup_words`.
+
+### Ordinary Q&A Markdown format switch
+
+Administrators can opt into the formal long-answer Markdown prompt from the
+admin "问答提示词配置" panel. The value is persisted as
+`prompt_prefix.ordinary_qa_markdown_format_enabled` in
+`.deer-flow/system_settings.json` and defaults to `false`. When enabled, only
+ordinary Q&A receives the `# 主标题` / `## 一、标题` / `### (一) 标题` /
+`#### 1. 标题` rules; writing mode, notebook mode and scheduled runs remain
+unaffected. The change takes effect when the next prompt is built.
+
 ---
 
 ## Technology Stack