feat: add knowledge API docs

public/api/tools/TT131/usage.json

@@ -0,0 +1,15 @@
+{
+  "id": "TT131",
+  "name": "广告",
+  "usedIn": [
+    {
+      "id": "P9.2",
+      "name": "实施采购",
+      "knowledgeAreaId": "KA09",
+      "knowledgeAreaName": "项目采购管理",
+      "processGroupId": "PG03",
+      "processGroupName": "执行过程组",
+      "purpose": "选定合格卖方并签署关于货物或服务交付的法律协议。本过程的最后成果是签订的协议，包括正式合同。本过程应根据需要在整个项目期间定期开展。"
+    }
+  ]
+}