fix(R61): 增加 session hint cookie 消除 bootstrap refresh 401

client/src/auth/AuthContext.tsx

@@ -58,6 +58,17 @@ function isWindowAvailable() {
   return typeof window !== "undefined";
 }
 
+function hasSessionHint() {
+  return typeof document !== "undefined" && document.cookie.includes("has_session=1");
+}
+
+function clearSessionHint() {
+  if (typeof document === "undefined") {
+    return;
+  }
+  document.cookie = "has_session=; path=/; max-age=0";
+}
+
 function readMustChangePasswordFromStorage() {
   return isWindowAvailable() && window.localStorage.getItem(MUST_CHANGE_PASSWORD_STORAGE_KEY) === "1";
 }
@@ -168,7 +179,7 @@ export function AuthProvider({ children }: PropsWithChildren) {
     }
   }, []);
 
-  const clearSession = useCallback(() => {
+  const markUnauthenticatedReady = useCallback(() => {
     sessionGenerationRef.current += 1;
     bootstrapPromiseRef.current = null;
     refreshRequestRef.current = null;
@@ -189,6 +200,12 @@ export function AuthProvider({ children }: PropsWithChildren) {
     }));
   }, [clearProactiveRefreshTimer]);
 
+  const clearSession = useCallback(() => {
+    clearSessionHint();
+    markUnauthenticatedReady();
+    void clearPwaRuntimeCaches();
+  }, [markUnauthenticatedReady]);
+
   const commitAuthenticatedUser = useCallback(
     (accessToken: string, me: MeResponse, mustChangePassword: boolean) => {
       const permissions = resolvePermissionsForRoles(me.roleCodes ?? []);
@@ -301,6 +318,11 @@ export function AuthProvider({ children }: PropsWithChildren) {
       return;
     }
 
+    if (!hasSessionHint() && (!isWindowAvailable() || window.navigator.onLine !== false)) {
+      markUnauthenticatedReady();
+      return;
+    }
+
     if (!bootstrapPromiseRef.current) {
       bootstrapPromiseRef.current = (async () => {
         try {
@@ -323,7 +345,7 @@ export function AuthProvider({ children }: PropsWithChildren) {
     }
 
     await bootstrapPromiseRef.current;
-  }, [activateOfflineSnapshot, clearSession, runRefresh, scheduleProactiveRefresh]);
+  }, [activateOfflineSnapshot, clearSession, markUnauthenticatedReady, runRefresh, scheduleProactiveRefresh]);
 
   const login = useCallback(
     async (identifier: string, password: string) => {