feat: add knowledge API docs

public/api/processes/P4.1.json

@@ -0,0 +1,9 @@
+{
+  "id": "P4.1",
+  "name": "规划成本管理",
+  "knowledgeAreaId": "KA04",
+  "knowledgeAreaName": "项目成本管理",
+  "processGroupId": "PG02",
+  "processGroupName": "规划过程组",
+  "purpose": "在整个项目期间为如何管理项目成本提供指南和方向。"
+}