feat(knowledge): 项目名改 zncm + 去除元链接噪音 + 创建人显示人名

- project_name 默认 deerflow → zncm（config.yaml + 配置默认 + 模块内字面量）
- related_links() 返回空：笔记 Related 不再注入 index/_meta/taxonomy/hub 结构链接，
  只保留真实相关笔记的可点 [[标题]]；无相关笔记且无来源时不再渲染 ## Related 段
- 移除随之多余的项目 hub 页脚手架（index.md/_meta/taxonomy.md 仍由 obsidian 脚手架保留，可解析）
- GET /notes/{id} 用 auth provider 把 created_by/updated_by(UUID) 解析为邮箱
  (created_by_name/updated_by_name)，前端 footer 显示人名、解析不到才显示短 id
- 仅对新沉淀笔记生效，现有笔记不动

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

offline-backend-20260512/backend/packages/harness/deerflow/knowledge/extractor.py

@@ -104,26 +104,33 @@ def _summary(turns: list[dict[str, str]], *, limit: int = 280) -> str:
     return ""
 
 
-def related_links(project_name: str | None) -> list[str]:
-    """Structural wikilinks every note carries (wiki-capture requirement).
+def related_links(project_name: str | None) -> list[str]:  # noqa: ARG001
+    """Structural wikilinks every note used to carry.
 
-    These point at vault meta/hub pages (``index`` / ``_meta/taxonomy`` / the
-    project hub) that always exist, so they resolve to navigable pages. Content-
-    specific "related notes" are injected separately by the service layer (which
-    has DB access) on top of these.
+    Product decision: notes no longer auto-link the vault meta/hub pages
+    (``index`` / ``_meta/taxonomy`` / the project hub) — they were noise in every
+    note's ``## Related``. Only real, content-specific related notes (injected by
+    the service layer, which has DB access) are linked now. Kept as a function
+    (returns empty) so existing callers and the wiki-capture contract stay intact.
     """
-    from deerflow.knowledge.markdown_vault import slugify
-
-    links = ["[[index]]", "[[_meta/taxonomy]]"]
-    if project_name:
-        links.append(f"[[projects/{slugify(project_name)}/synthesis/product-knowledge-base]]")
-    return links
+    return []
 
 
 # Backwards-compatible internal alias.
 _related_links = related_links
 
 
+def _related_section_md(related_lines: list[str], source_lines: list[str]) -> str:
+    """Render the ``## Related`` section, or ``""`` when there is nothing to show."""
+    if not related_lines and not source_lines:
+        return ""
+    inner = "\n".join(related_lines)
+    if source_lines:
+        sources_block = "### Sources\n\n" + "\n".join(source_lines)
+        inner = (inner + "\n\n" + sources_block) if inner else sources_block
+    return f"## Related\n\n{inner}\n"
+
+
 def _build_body(
     *,
     title: str,
@@ -155,12 +162,9 @@ def _build_body(
 
     implications = "- 后续可在相关问答中参考本页知识。\n- 如内容过期或冲突，请编辑或归档。"
 
-    related = "\n".join(f"- {link}" for link in _related_links(project_name))
-    if sources:
-        related += "\n\n### Sources\n\n"
-        for s in sources[:20]:
-            label = s.title or s.url or "来源"
-            related += f"- {label}" + (f" — {s.url}" if s.url else "") + "\n"
+    related_lines = [f"- {link}" for link in _related_links(project_name)]
+    source_lines = [f"- {s.title or s.url or '来源'}" + (f" — {s.url}" if s.url else "") for s in sources[:20]]
+    related_section = _related_section_md(related_lines, source_lines)
 
     return (
         f"# {title}\n\n"
@@ -168,7 +172,7 @@ def _build_body(
         f"## Finding / Decision\n\n{finding}\n\n"
         f"## Reasoning\n\n{reasoning}\n\n"
         f"## Implications\n\n{implications}\n\n"
-        f"## Related\n\n{related}\n"
+        f"{related_section}"
     )
 
 
@@ -180,7 +184,7 @@ def extract_thread(
     mode: str = "summary",
     title: str | None = None,
     tags: list[str] | None = None,
-    project_name: str | None = "deerflow",
+    project_name: str | None = "zncm",
     sources: list[SourceDraft] | None = None,
     max_messages: int = 80,
 ) -> NoteDraft | None:
@@ -193,7 +197,7 @@ def extract_thread(
     sources = sources or []
     body = _build_body(title=final_title, turns=turns, mode=mode, project_name=project_name, sources=sources)
     base_tags = list(tags or [])
-    for default in (project_name or "deerflow", "knowledge-base"):
+    for default in (project_name or "zncm", "knowledge-base"):
         if default and default not in base_tags:
             base_tags.append(default)
     return NoteDraft(
@@ -216,7 +220,7 @@ def extract_search(
     sources: list[SourceDraft],
     *,
     thread_id: str | None = None,
-    project_name: str | None = "deerflow",
+    project_name: str | None = "zncm",
     title: str | None = None,
     tags: list[str] | None = None,
 ) -> NoteDraft:
@@ -240,7 +244,7 @@ def extract_search(
         *[f"- {link}" for link in _related_links(project_name)],
     ]
     base_tags = list(tags or [])
-    for default in (project_name or "deerflow", "knowledge-base", "reference"):
+    for default in (project_name or "zncm", "knowledge-base", "reference"):
         if default and default not in base_tags:
             base_tags.append(default)
     return NoteDraft(