feat: 添加共享 Kiro 超时模块并更新相关文件以使用统一的页面加载超时预算

shared/kiro-timeouts.js

@@ -0,0 +1,25 @@
+(function attachKiroTimeouts(root, factory) {
+  root.MultiPageKiroTimeouts = factory();
+})(typeof self !== 'undefined' ? self : globalThis, function createKiroTimeoutsModule() {
+  const DEFAULT_KIRO_PAGE_LOAD_TIMEOUT_MS = 3 * 60 * 1000;
+
+  function normalizePositiveInteger(value, fallback) {
+    const numeric = Math.floor(Number(value));
+    if (Number.isInteger(numeric) && numeric > 0) {
+      return numeric;
+    }
+    return fallback;
+  }
+
+  function normalizeKiroPageLoadTimeoutMs(value, fallback = DEFAULT_KIRO_PAGE_LOAD_TIMEOUT_MS) {
+    return normalizePositiveInteger(
+      value,
+      normalizePositiveInteger(fallback, DEFAULT_KIRO_PAGE_LOAD_TIMEOUT_MS)
+    );
+  }
+
+  return {
+    DEFAULT_KIRO_PAGE_LOAD_TIMEOUT_MS,
+    normalizeKiroPageLoadTimeoutMs,
+  };
+});