feat: add knowledge API docs

public/api/artifacts/A012/usage.json

@@ -0,0 +1,16 @@
+{
+  "id": "A012",
+  "name": "成本管理计划",
+  "asInput": [],
+  "asOutput": [
+    {
+      "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。"
+    }
+  ]
+}