feat: 编辑框合并说明/用途字段，编辑模式下允许修改说明

test/mcp.test.js

@@ -128,6 +128,38 @@ test("readonly 模式下拒绝项目/配置写操作，切换回 edit 后恢复"
   await callTool("set_mode", { mode: "edit" });
 });
 
+test("edit 模式下可以修改配置说明", async () => {
+  await callTool("set_mode", { mode: "edit" });
+
+  const { text: createText } = await callTool("create_project", { name: "MCP-Unittest-Desc" });
+  const project = JSON.parse(createText.match(/\{[\s\S]*\}/)[0]);
+
+  const cfg = await callTool("create_config", {
+    projectId: project.id,
+    key: "db/host",
+    description: "原始说明",
+    value: "localhost",
+  });
+  const cfgObj = JSON.parse(cfg.text.match(/\{[\s\S]*\}/)[0]);
+
+  const updated = await callTool("update_config", {
+    projectId: project.id,
+    configId: cfgObj.id,
+    description: "新的说明",
+  });
+  assert.ok(!updated.isError, "edit 模式下应允许修改说明");
+  const updatedObj = JSON.parse(updated.text.match(/\{[\s\S]*\}/)[0]);
+  assert.strictEqual(updatedObj.description, "新的说明");
+  assert.strictEqual(updatedObj.value, "localhost", "仅改说明，值不应变化");
+
+  // 清理测试项目
+  const delProject = await callTool("delete_project", { projectId: project.id });
+  const confirmProject = await callTool("confirm_delete_project", {
+    confirmation_token: delProject.structuredContent.confirmation_token,
+  });
+  assert.strictEqual(confirmProject.structuredContent.status, "deleted");
+});
+
 test("配置删除同样为两步式确认", async () => {
   const { text: createText } = await callTool("create_project", { name: "MCP-Unittest-Cfg" });
   const project = JSON.parse(createText.match(/\{[\s\S]*\}/)[0]);