chore: fix README formatting for oxfmt check

WebKit (Tauri on Linux) can report the benign loop notification with
an Error object attached, which bypassed the bare-message guard and
showed a fatal startup dialog. Match on the engine-generated message
instead; no genuine startup failure carries these strings.

README.md

@@ -76,6 +76,4 @@ the [official plugins](plugins/official). The plugin API is still a preview.
 
 [Apache 2.0](LICENSE). Bundled third-party assets are listed in [`THIRD_PARTY_LICENSES.md`](THIRD_PARTY_LICENSES.md).
 
-
-
 <sub>Not affiliated with JetBrains. IntelliJ IDEA is a trademark of JetBrains s.r.o.</sub>

public/boot.js

@@ -90,11 +90,13 @@
     if (target?.tagName === "SCRIPT" || (target?.tagName === "LINK" && target.rel === "modulepreload")) {
       show(`Could not load startup script: ${target.src || target.href}`);
     } else if (event.error || event.message) {
-      // ResizeObserver defers undelivered notifications to the next frame; startup can continue.
+      // ResizeObserver defers undelivered notifications to the next frame; startup can
+      // continue. Blink reports the loop as a bare message, WebKit (Tauri on Linux) as an
+      // Error object — ignore both. No genuine startup failure carries these engine strings.
+      const message = event.error?.message ?? event.message;
       if (
-        !event.error &&
-        (event.message === "ResizeObserver loop completed with undelivered notifications." ||
-          event.message === "ResizeObserver loop limit exceeded")
+        message === "ResizeObserver loop completed with undelivered notifications." ||
+        message === "ResizeObserver loop limit exceeded"
       )
         return;
       show(event.error || `${event.message}\n${event.filename || ""}:${event.lineno || 0}:${event.colno || 0}`);

src/platform/boot.test.ts

@@ -54,10 +54,16 @@ it.each(resizeObserverMessages)("still times out an unresolved startup after %s"
   expect(document.querySelector("textarea")?.value).toContain("Startup did not finish within 30 seconds.");
 });
 
-it.each(resizeObserverMessages)("keeps actual errors with the same message fatal: %s", (message) => {
-  window.dispatchEvent(new ErrorEvent("error", { message, error: new Error(message) }));
-  expect(document.getElementById("splash")).toBeNull();
-  expect(document.querySelector("textarea")?.value).toContain(message);
+it.each(resizeObserverMessages)("ignores the loop notification delivered as an Error: %s", (message) => {
+  // WebKit (Tauri on Linux) reports the loop with an Error object; Blink as a bare message.
+  // No genuine startup failure carries these engine-generated strings.
+  window.dispatchEvent(new ErrorEvent("error", { message, filename: "tauri://localhost", error: new Error(message) }));
+  expect(document.getElementById("splash")).not.toBeNull();
+  expect(document.getElementById("boot-error")).toBeNull();
+  expect(document.documentElement.dataset.boot).toBeUndefined();
+  window.dispatchEvent(new Event("openidea:boot-ready"));
+  vi.advanceTimersByTime(30_000);
+  expect(document.getElementById("boot-error")).toBeNull();
 });
 
 it.each(resizeObserverMessages)("keeps rejections with the same message fatal: %s", (message) => {