高温氦气物性补全；三通四通能量计算bug修正

frontend/tests/e2e/fit-view.spec.ts

@@ -323,7 +323,7 @@ test("加载本地工程后自动适配建模画布", async ({ page }) => {
   await prepareApp(page);
   await page.addInitScript((project) => {
     window.localStorage.setItem(
-      "system-simulation-flow:project:demo-system",
+      "system-simulation-flow:autosave",
       JSON.stringify(project),
     );
   }, wideProject);
@@ -341,7 +341,7 @@ test("加载本地工程后自动适配建模画布", async ({ page }) => {
   );
   await expect(consolePanel.locator(".simulation-console-dock-log")).toHaveCount(0);
   await page.getByRole("button", { name: "展开仿真控制台" }).click();
-  await expect(consolePanel).toContainText("工程已加载");
+  await expect(consolePanel).toContainText("已加载最后一次浏览器存档");
 });
 
 test("导入工程 JSON 后自动适配建模画布", async ({ page }) => {
@@ -495,7 +495,7 @@ test("切换到结果页时自动适配只读系统图，旧网格线设置不
       JSON.stringify(snapshot),
     );
     window.localStorage.setItem(
-      "system-simulation-flow:project:demo-system",
+      "system-simulation-flow:autosave",
       JSON.stringify(project),
     );
     window.localStorage.setItem(
@@ -704,7 +704,7 @@ test("从结果页返回建模页后保留用户调整的建模视口", async ({
       JSON.stringify(snapshot),
     );
     window.localStorage.setItem(
-      "system-simulation-flow:project:demo-system",
+      "system-simulation-flow:autosave",
       JSON.stringify(project),
     );
   }, { project: wideProject, snapshot: resultSnapshot });