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/CLAUDE.md

@@ -357,7 +357,7 @@ FastAPI application on port 8001 with health checks at `GET|HEAD /health`, `/api
 | **Threads** (`/api/threads/{id}`) | `DELETE /` - remove DeerFlow-managed local thread data after LangGraph thread deletion; unexpected failures are logged server-side and return a generic 500 detail |
 | **Threads search** (`POST /threads/search`, LangGraph-compat) | Conversation listing. **System threads are excluded by default**: rows whose `metadata.system` is truthy (scheduler runs, roundtable workers) never crowd the user's list; a caller whose `metadata` filter explicitly references `thread_type`/`system` (e.g. studio notebooks) opts out of the exclusion. New `query` field = case-insensitive title (`display_name`) substring search, used by the chats page's server-side pagination. `POST /threads/count` takes the same request body (limit/offset ignored) and returns `{total}` under identical filtering/exclusion semantics ? powers the chats page's ??/??? display without fetching rows (`ThreadMetaStore.count`). `ThreadMetaStore.search` gained `exclude_system`/`query` params; JSON-blob filters batch-scan until the requested `limit`/`offset` window is full (so pagination over a heavily-filtered set never under-fills), with a `thread_id` tie-breaker on the `updated_at DESC` ordering for stable OFFSET paging. Tests: `tests/test_thread_meta_search.py` |
 | **Artifacts** (`/api/threads/{id}/artifacts`) | `GET /{path}` - serve artifacts; active content types (`text/html`, `application/xhtml+xml`, `image/svg+xml`) are always forced as download attachments to reduce XSS risk; `?download=true` still forces download for other file types |
-| **Word export** (`POST /api/writing/export/docx`) | Shared Markdown → DOCX generator used by conversation, artifact, scheduled-task, Deep Research, and AI-writing download surfaces. `app/gateway/word_export.py` builds OOXML with no Python conversion dependency: A4 portrait, 3.7/3.5/2.8/2.6 cm margins, real multilevel heading numbering (`一、` / `(一)` / `1.`), two-character first-line indent on heading levels 1–3, formal body/table styles, page numbers beginning at 1 with odd pages left-aligned and even pages right-aligned, and embedded `app/gateway/assets/fonts/方正小标宋简体.ttf`. Before numbering it removes complete manual heading prefixes (including `2.1` / `2.1.1`) and drops Markdown horizontal rules from Word output. The default ordinary-Q&A Lead Agent prompt emits the matching Markdown heading forms and avoids unordered bullet lists; writing setup, writing mode, notebook, scheduled runs, and SOUL-driven custom agents keep their independent prompts. The font loader validates its internal family, SHA-256, and OpenType embedding permission (`OS/2.fsType`) before export. Tests: `tests/test_word_export.py`, `tests/test_es_query_routing_prompt.py`. |
+| **Word export** (`POST /api/writing/export/docx`) | Shared Markdown → DOCX generator used by conversation, artifact, scheduled-task, Deep Research, and AI-writing download surfaces. `app/gateway/word_export.py` builds OOXML with no Python conversion dependency: A4 portrait, 3.7/3.5/2.8/2.6 cm margins, real multilevel heading numbering (`一、` / `(一)` / `1.`), two-character first-line indent on heading levels 1–3, formal body/table styles, page numbers beginning at 1 with odd pages left-aligned and even pages right-aligned, and embedded `app/gateway/assets/fonts/方正小标宋简体.ttf`. Before numbering it removes complete manual heading prefixes (including `2.1` / `2.1.1`) and drops Markdown horizontal rules from Word output. The ordinary-Q&A Lead Agent can emit the matching Markdown heading forms and avoid unordered bullet lists when the admin enables `prompt_prefix.ordinary_qa_markdown_format_enabled` in `system_settings.json`; the switch defaults off, while writing setup, writing mode, notebook, scheduled runs, and SOUL-driven custom agents keep their independent prompts. The font loader validates its internal family, SHA-256, and OpenType embedding permission (`OS/2.fsType`) before export. Tests: `tests/test_word_export.py`, `tests/test_es_query_routing_prompt.py`. |
 | **Deep Research** (`/api/deep-research`) | Durable, user-owned research sessions/jobs with replayable SSE events and hidden-thread artifacts. `basic`/`quick` use the compact runner; `detailed` creates bounded subtopics, searches/writes sections concurrently, and assembles a report; `deep` recursively searches follow-up questions under a deterministic breadth/depth query budget. `multi_agent` is a LangGraph 1.x editor/researcher/writer/reviewer graph: its initial plan emits `awaiting_input`, the recorder stores the interrupt and releases the lease, and `POST /jobs/{id}/resume` rebuilds the graph from the persisted approved/revised plan. A bounded `custom_outline` is frozen into the session; headings/list entries deterministically supply the detailed and multi-agent plan, and the shared writer receives it only as a guarded content constraint. Completed reports support owner-scoped follow-up (`GET /sessions/{id}/messages`, `POST /sessions/{id}/chat`): context is only the current report, selected sources and recent messages; source-id citations are persisted, while `allow_new_research=true` is explicitly rejected. Owners may change that evidence set only after the job stops via `PATCH /sessions/{id}/sources/{source_id}`; this applies to future follow-ups rather than rewriting a completed report. Optional report illustrations are gated by `config.yaml -> deep_research.image_generation`: the Harness `OpenAICompatibleImageProvider` requires base64 output, the shared runner step writes only bounded `research-image-01..04.(png|jpg|webp)` artifacts and Markdown uses private `deep-research://` links. `GET /sessions/{id}/artifacts/{name}` checks session ownership before serving an image; an unavailable provider yields a warning but never fails the text report. Runners live in `packages/harness/deerflow/agents/deep_research/runners/`, may never import `app.*`, and use only the `AdapterBundle`. |
 | **Gateway auth** | Owner-scoped Deep Research routes await the platform's asynchronous `get_current_user` resolver before they read or write persistence, ensuring each session and job operation receives a concrete user ID. Deep Research artifacts are always resolved from a whitelisted filename via `/mnt/user-data/outputs/<name>` before mapping to a host path, preserving the sandbox guard on native Windows and Linux hosts. |
 | **Suggestions** (`/api/threads/{id}/suggestions`) | `POST /` - generate follow-up questions; rich list/block model content is normalized before JSON parsing |
@@ -510,6 +510,20 @@ Admin-configurable, **access-control-free** categories that published agents/ski
 
 Each agent/skill carries a single `square_id` column (`AgentRow` / `SkillRow`, `String(64)` NOT NULL default `''`, migration `20260611_01`, idempotent SQL in `column_additions_mysql.sql`). One column = at most one square, so an item can never be "published twice". `''` = unassigned ? resolved to the default square at read/filter time. Writes normalize via `normalize_square_id`: agents on create/update (`square_id` field), skills on publish (`PUT /api/skills/custom/{name}/published` accepts optional `square_id`). Listing filters: `GET /api/agents?square=` and `GET /api/skills?square=` keep only that square's items; the **default** square additionally sweeps in legacy `''` rows (`square_is_default`). Tests: `tests/test_publish_squares.py`. Frontend: `core/system-settings` (`usePublishSquares`/`useUpdatePublishSquares`), admin `PublishSquaresSettingsPage` (embedded in the appearance/settings hub), square picker in the agent edit dialog + per-skill card, and a ??-tab square sub-filter in both galleries.
 
+### Reference-mode Entry Switch
+
+The 参考文献/RAG citation-mode composer entry is system-controlled through
+`system_settings.json` → `citation_display.reference_mode_enabled` (default
+`false`). `GET /api/system-settings/citation-display` remains readable so the
+frontend can hide or show the entry consistently; `PUT` is admin-only and
+partially updates `reference_mode_enabled` and/or `cleanup_words`. The normal
+workspace input box, iframe chat toolbar, send context, right reference panel,
+and appearance settings all use this flag, while already locked citation
+threads and selected LLMWiki knowledge bases still render their source
+documents in the reference panel. Tests:
+`tests/test_prompt_prefix.py` and
+`frontend-web/src/pages/iframe-chat-mode-buttons.test.ts`.
+
 ### Agent Module Tag Config (zzJC / zzXD 按类型聚合)
 
 Backs the zzJC / zzXD agent-chat left sidebar (「按类型聚合智能体 + 聊天记录」). An admin picks which agent **tags** belong to a module; the module's left sidebar then shows only agents under those tags (empty/unconfigured = show all visible agents). Stored in `system_settings.json` → `agent_modules` (`AgentModuleSettings`: `modules: {module_key → [tag_id, ...]}`); pure helpers `get_module_tag_ids` / `set_module_tag_ids` (de-dupe + strip). Endpoints (in `app/gateway/routers/system_settings.py`): `GET /api/system-settings/agent-modules/{key}` (readable by any user — the sidebar needs it to filter), `PUT /api/system-settings/agent-modules/{key}` (admin only, full replacement of the tag-id list). Module keys are frontend-defined (`AGENT_MODULES` in `components/workspace/agents/agent-module-sidebar.tsx`, keyed by the module's landing agent id: `6bf`→`zzjc`, `10d69…`→`zzxd`). Tests: `tests/test_agent_modules.py`. Frontend: `core/system-settings` (`useAgentModuleConfig`/`useUpdateAgentModuleConfig`), admin `AgentModuleSettingsDialog` (gear button in the agent-chat header).

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

offline-backend-20260512/backend/app/gateway/routers/system_settings.py

@@ -42,12 +42,17 @@ class PromptPrefixResponse(BaseModel):
     enabled: bool = Field(..., description="Whether the toggle is exposed to users")
     switch_label: str = Field(..., description="Toggle label shown in the chat input")
     prompt_prefix: str = Field(..., description="Prefix text prepended to the first user message")
+    ordinary_qa_markdown_format_enabled: bool = Field(
+        default=False,
+        description="Whether formal Markdown heading rules are injected into ordinary Q&A system prompts",
+    )
 
 
 class PromptPrefixUpdateRequest(BaseModel):
     enabled: bool | None = None
     switch_label: str | None = None
     prompt_prefix: str | None = None
+    ordinary_qa_markdown_format_enabled: bool | None = None
 
 
 class PluginDomainAgentMappingItem(BaseModel):
@@ -82,10 +87,12 @@ class PrivateSquareUpdateRequest(BaseModel):
 
 
 class CitationDisplayResponse(BaseModel):
+    reference_mode_enabled: bool = Field(default=False, description="Whether reference-mode entry points are exposed to users")
     cleanup_words: list[str] = Field(default_factory=list, description="Global citation cleanup words")
 
 
 class CitationDisplayUpdateRequest(BaseModel):
+    reference_mode_enabled: bool | None = None
     cleanup_words: list[str] | None = None
 
 
@@ -110,6 +117,7 @@ def _to_response(settings: PromptPrefixSettings) -> PromptPrefixResponse:
         enabled=settings.enabled,
         switch_label=settings.switch_label,
         prompt_prefix=settings.prompt_prefix,
+        ordinary_qa_markdown_format_enabled=settings.ordinary_qa_markdown_format_enabled,
     )
 
 
@@ -410,9 +418,12 @@ async def update_leaderboard_settings(
 
 @router.get("/citation-display", response_model=CitationDisplayResponse)
 async def get_citation_display() -> CitationDisplayResponse:
-    """Return global citation display cleanup settings."""
+    """Return global citation display settings."""
     settings = load_system_settings().citation_display
-    return CitationDisplayResponse(cleanup_words=settings.cleanup_words)
+    return CitationDisplayResponse(
+        reference_mode_enabled=settings.reference_mode_enabled,
+        cleanup_words=settings.cleanup_words,
+    )
 
 
 @router.put("/citation-display", response_model=CitationDisplayResponse)
@@ -420,14 +431,22 @@ async def update_citation_display(
     body: CitationDisplayUpdateRequest,
     request: Request,
 ) -> CitationDisplayResponse:
-    """Update global citation display cleanup settings. Admin only."""
+    """Update global citation display settings. Admin only."""
     await _require_admin(request)
 
     current = load_system_settings()
-    words = [str(item).strip() for item in (body.cleanup_words or []) if str(item).strip()]
-    updated = current.citation_display.model_copy(update={"cleanup_words": words})
+    fields = body.model_dump(exclude_unset=True)
+    update: dict[str, object] = {}
+    if "reference_mode_enabled" in fields and fields["reference_mode_enabled"] is not None:
+        update["reference_mode_enabled"] = bool(fields["reference_mode_enabled"])
+    if "cleanup_words" in fields and fields["cleanup_words"] is not None:
+        update["cleanup_words"] = [str(item).strip() for item in fields["cleanup_words"] if str(item).strip()]
+    updated = current.citation_display.model_copy(update=update)
     saved = save_system_settings(current.model_copy(update={"citation_display": updated}))
-    return CitationDisplayResponse(cleanup_words=saved.citation_display.cleanup_words)
+    return CitationDisplayResponse(
+        reference_mode_enabled=saved.citation_display.reference_mode_enabled,
+        cleanup_words=saved.citation_display.cleanup_words,
+    )
 
 
 @router.get("/private-square", response_model=PrivateSquareStatusResponse)

offline-backend-20260512/backend/packages/harness/deerflow/agents/lead_agent/prompt.py

@@ -9,7 +9,8 @@ from functools import lru_cache
 from typing import TYPE_CHECKING
 from zoneinfo import ZoneInfo
 
-from deerflow.config.agents_config import load_agent_soul
+from deerflow.config.agents_config import load_agent_soul
+from deerflow.config.system_settings import load_system_settings
 from deerflow.skills.storage import get_or_new_skill_storage
 from deerflow.skills.types import Skill, SkillCategory
 from deerflow.subagents import get_available_subagent_names
@@ -486,7 +487,7 @@ task(description="Oracle Cloud analysis", prompt="...", subagent_type="general-p
 </subagent_system>"""
 
 
-_ORDINARY_QA_MARKDOWN_FORMAT_SECTION = """
+_ORDINARY_QA_MARKDOWN_FORMAT_SECTION = """
 <ordinary_qa_markdown_format>
 当普通问答需要输出带章节结构的较长内容时，必须采用以下 Markdown 规范，以便下载为 Word 后得到正确的自动编号和公文标题格式：
 - 文档主标题使用 `# 主标题`；主标题只写标题文字，不添加章节编号。
@@ -495,10 +496,19 @@ _ORDINARY_QA_MARKDOWN_FORMAT_SECTION = """
 - 默认禁止使用以 `-`、`*`、`+` 或 `•` 开头的无序圆点列表；并列内容优先改写为完整自然段，确需逐项表达时使用有序列表。只有用户明确要求无序列表时才使用。
 - 简短问答不必为了套用格式而强行添加标题；本规范只约束实际使用的标题和列表。
 </ordinary_qa_markdown_format>
-"""
-
-
-SYSTEM_PROMPT_TEMPLATE = """
+"""
+
+
+def _ordinary_qa_markdown_format_enabled() -> bool:
+    """Return the admin-controlled formal Markdown prompt switch."""
+    try:
+        return bool(load_system_settings().prompt_prefix.ordinary_qa_markdown_format_enabled)
+    except Exception:
+        logger.debug("Failed to read the ordinary Q&A Markdown format switch; using disabled", exc_info=True)
+        return False
+
+
+SYSTEM_PROMPT_TEMPLATE = """
 <role>
 You are {agent_name}, an internal super agent.
 </role>
@@ -1537,9 +1547,13 @@ When a search, knowledge, skill, or MCP tool returns a result list:
         if rag_mode_enabled
         else ""
     )
-    ordinary_qa_format_section = (
-        _ORDINARY_QA_MARKDOWN_FORMAT_SECTION
-        if not is_bootstrap and not writing_mode and not is_notebook_mode and not is_scheduled_run
+    ordinary_qa_format_section = (
+        _ORDINARY_QA_MARKDOWN_FORMAT_SECTION
+        if _ordinary_qa_markdown_format_enabled()
+        and not is_bootstrap
+        and not writing_mode
+        and not is_notebook_mode
+        and not is_scheduled_run
         else ""
     )
 

offline-backend-20260512/backend/packages/harness/deerflow/config/system_settings.py

@@ -153,6 +153,10 @@ class PromptPrefixSettings(BaseModel):
     enabled: bool = Field(default=False, description="Whether the prefix toggle is offered to users at all")
     switch_label: str = Field(default="加入立场前缀", description="Toggle label shown in the chat input")
     prompt_prefix: str = Field(default="", description="Text prepended to the first user message when enabled")
+    ordinary_qa_markdown_format_enabled: bool = Field(
+        default=False,
+        description="Whether the formal Markdown heading rules are injected into ordinary Q&A system prompts.",
+    )
     model_config = ConfigDict(extra="ignore")
 
 
@@ -255,8 +259,12 @@ class AppearanceSettings(BaseModel):
 
 
 class CitationDisplaySettings(BaseModel):
-    """System-wide cleanup rules for citation cards and detail dialogs."""
+    """System-wide controls for citation mode entry and display cleanup."""
 
+    reference_mode_enabled: bool = Field(
+        default=False,
+        description="Whether the reference-mode entry points are exposed to users.",
+    )
     cleanup_words: list[str] = Field(
         default_factory=list,
         description="Words or phrases used to remove noisy advertisement/disclaimer lines from citation display.",

offline-backend-20260512/backend/tests/test_es_query_routing_prompt.py

@@ -112,6 +112,7 @@ def test_es_query_routing_registration_log_explains_custom_agent_exclusion(caplo
 
 def test_formal_markdown_rules_are_scoped_to_ordinary_qa(monkeypatch) -> None:
     config = _app_config(enabled=False)
+    monkeypatch.setattr(prompt_module, "_ordinary_qa_markdown_format_enabled", lambda: True)
     monkeypatch.setattr(prompt_module, "_get_memory_context", lambda *args, **kwargs: "")
     monkeypatch.setattr(prompt_module, "get_agent_soul", lambda *args, **kwargs: "")
     monkeypatch.setattr(prompt_module, "get_skills_prompt_section", lambda *args, **kwargs: "")
@@ -134,3 +135,19 @@ def test_formal_markdown_rules_are_scoped_to_ordinary_qa(monkeypatch) -> None:
     assert '<ordinary_qa_markdown_format>' not in writing_prompt
     assert '<ordinary_qa_markdown_format>' not in notebook_prompt
     assert '<ordinary_qa_markdown_format>' not in scheduled_prompt
+
+
+def test_formal_markdown_rules_are_disabled_when_switch_is_off(monkeypatch) -> None:
+    config = _app_config(enabled=False)
+    monkeypatch.setattr(prompt_module, "_ordinary_qa_markdown_format_enabled", lambda: False)
+    monkeypatch.setattr(prompt_module, "_get_memory_context", lambda *args, **kwargs: "")
+    monkeypatch.setattr(prompt_module, "get_agent_soul", lambda *args, **kwargs: "")
+    monkeypatch.setattr(prompt_module, "get_skills_prompt_section", lambda *args, **kwargs: "")
+    monkeypatch.setattr(prompt_module, "get_deferred_tools_prompt_section", lambda *args, **kwargs: "")
+    monkeypatch.setattr(prompt_module, "_build_acp_section", lambda *args, **kwargs: "")
+    monkeypatch.setattr(prompt_module, "_build_custom_mounts_section", lambda *args, **kwargs: "")
+    monkeypatch.setattr(prompt_module, "_current_time_context", lambda: "")
+
+    ordinary_prompt = prompt_module.apply_prompt_template(app_config=config)
+
+    assert '<ordinary_qa_markdown_format>' not in ordinary_prompt

offline-backend-20260512/backend/tests/test_prompt_prefix.py

@@ -9,7 +9,9 @@ from types import SimpleNamespace
 import pytest
 from langchain_core.messages import AIMessage, HumanMessage
 
+from app.gateway.routers import system_settings as ss_router
 from app.gateway.services import _prepend_prompt_prefix, _prompt_prefix_opted_in
+from deerflow.agents.lead_agent import prompt as prompt_module
 from deerflow.config import system_settings as ss
 
 
@@ -28,6 +30,9 @@ def test_load_returns_defaults_when_missing(tmp_runtime_home: Path) -> None:
     settings = ss.load_system_settings()
     assert settings.prompt_prefix.enabled is False
     assert settings.prompt_prefix.prompt_prefix == ""
+    assert settings.prompt_prefix.ordinary_qa_markdown_format_enabled is False
+    assert settings.citation_display.reference_mode_enabled is False
+    assert settings.citation_display.cleanup_words == []
 
 
 def test_save_then_load_roundtrips(tmp_runtime_home: Path) -> None:
@@ -36,6 +41,7 @@ def test_save_then_load_roundtrips(tmp_runtime_home: Path) -> None:
             enabled=True,
             switch_label="加入立场前缀",
             prompt_prefix="你需要站在中方角度",
+            ordinary_qa_markdown_format_enabled=True,
         )
     )
     ss.save_system_settings(settings)
@@ -49,6 +55,88 @@ def test_save_then_load_roundtrips(tmp_runtime_home: Path) -> None:
     assert reloaded.prompt_prefix.enabled is True
     assert reloaded.prompt_prefix.switch_label == "加入立场前缀"
     assert reloaded.prompt_prefix.prompt_prefix == "你需要站在中方角度"
+    assert reloaded.prompt_prefix.ordinary_qa_markdown_format_enabled is True
+
+
+def test_runtime_markdown_format_switch_defaults_off_and_updates_without_restart(
+    tmp_runtime_home: Path,
+) -> None:
+    assert prompt_module._ordinary_qa_markdown_format_enabled() is False
+
+    ss.save_system_settings(
+        ss.SystemSettings(
+            prompt_prefix=ss.PromptPrefixSettings(
+                ordinary_qa_markdown_format_enabled=True,
+            )
+        )
+    )
+
+    assert prompt_module._ordinary_qa_markdown_format_enabled() is True
+
+
+def _patch_admin(monkeypatch: pytest.MonkeyPatch) -> None:
+    admin = SimpleNamespace(
+        id="admin1",
+        system_role="admin",
+        email="admin@example.com",
+    )
+
+    async def _optional(_request):
+        return admin
+
+    monkeypatch.setattr(ss_router, "get_optional_user_from_request", _optional)
+
+
+@pytest.mark.asyncio
+async def test_prompt_settings_update_can_enable_markdown_format_without_changing_prefix(
+    tmp_runtime_home: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    _patch_admin(monkeypatch)
+    current = ss.SystemSettings(
+        prompt_prefix=ss.PromptPrefixSettings(
+            enabled=True,
+            switch_label="加入立场前缀",
+            prompt_prefix="你需要站在中方角度",
+        )
+    )
+    ss.save_system_settings(current)
+
+    response = await ss_router.update_prompt_prefix(
+        ss_router.PromptPrefixUpdateRequest(ordinary_qa_markdown_format_enabled=True),
+        SimpleNamespace(),
+    )
+
+    assert response.ordinary_qa_markdown_format_enabled is True
+    assert response.enabled is True
+    assert response.switch_label == "加入立场前缀"
+    assert response.prompt_prefix == "你需要站在中方角度"
+
+
+@pytest.mark.asyncio
+async def test_citation_display_update_preserves_unspecified_fields(
+    tmp_runtime_home: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    _patch_admin(monkeypatch)
+    current = ss.SystemSettings(
+        citation_display=ss.CitationDisplaySettings(
+            cleanup_words=["广告", "免责声明"],
+        )
+    )
+    ss.save_system_settings(current)
+
+    response = await ss_router.update_citation_display(
+        ss_router.CitationDisplayUpdateRequest(reference_mode_enabled=True),
+        SimpleNamespace(),
+    )
+
+    assert response.reference_mode_enabled is True
+    assert response.cleanup_words == ["广告", "免责声明"]
+
+    payload = json.loads((tmp_runtime_home / "system_settings.json").read_text(encoding="utf-8"))
+    assert payload["citation_display"]["reference_mode_enabled"] is True
+    assert payload["citation_display"]["cleanup_words"] == ["广告", "免责声明"]
 
 
 def test_prepend_prefix_tags_first_human_without_touching_content() -> None: