feat: add knowledge API docs

public/api/artifacts/A043/usage.json

@@ -0,0 +1,16 @@
+{
+  "id": "A043",
+  "name": "成本估算",
+  "asInput": [],
+  "asOutput": [
+    {
+      "id": "P4.2",
+      "name": "估算成本",
+      "knowledgeAreaId": "KA04",
+      "knowledgeAreaName": "项目成本管理",
+      "processGroupId": "PG02",
+      "processGroupName": "规划过程组",
+      "purpose": "确定项目所需的资金。本过程应根据需要在整个项目期间定期开展。"
+    }
+  ]
+}