diff --git a/agent/prompt/workspace.py b/agent/prompt/workspace.py
index 99e30a82..60fdd762 100644
--- a/agent/prompt/workspace.py
+++ b/agent/prompt/workspace.py
@@ -408,6 +408,7 @@ def _get_rule_template() -> str:
 知识的核心价值在于**关联**。每个页面都应通过 markdown 链接引用相关页面，构建知识网络：
 - 提到已有页面的概念时，添加 `[概念名](../category/page.md)` 链接
 - 新建页面时，检查是否有已有页面应该反向链接到新页面
+- **只链接已存在的页面**——不要引用尚未创建的页面。如果某个概念值得单独建页，先创建该页面再添加链接
 
 ### 索引维护
 
diff --git a/skills/knowledge-wiki/SKILL.md b/skills/knowledge-wiki/SKILL.md
index d96cf099..b72a2114 100644
--- a/skills/knowledge-wiki/SKILL.md
+++ b/skills/knowledge-wiki/SKILL.md
@@ -53,7 +53,7 @@ Content here. Cross-reference related pages with markdown links:
 - [Page B](../category/page-b.md) — how it relates
 ```
 
-Cross-references build a knowledge graph. When creating or updating a page, always link to related pages, and update those pages to link back.
+Cross-references build a knowledge graph. When creating or updating a page, link to related pages and update those pages to link back. **Only link to pages that already exist** — if a concept deserves its own page, create it first, then add the link.
 
 ## Index Format (`knowledge/index.md`)
 
@@ -76,8 +76,8 @@ Category names and structure are flexible — follow whatever organization alrea
 Append-only, newest at bottom:
 
 ```markdown
-## [2026-04-09] ingest | DeepSeek-R1 Deploy Guide
-## [2026-04-09] synthesize | Memory System Design Analysis
+## [YYYY-MM-DD] ingest | Page Title
+## [YYYY-MM-DD] synthesize | Page Title
 ```
 
 ## Guidelines