fix public work detail not found recovery

src/components/platform-entry/PlatformEntryFlowShellImpl.tsx

@@ -99,7 +99,10 @@ import {
   buildPublicWorkStagePath,
   pushAppHistoryPath,
 } from '../../routing/appPageRoutes';
-import { resolveRuntimeNotFoundRecoveryAction } from '../../routing/runtimeNotFoundRecovery';
+import {
+  resolveRuntimeNotFoundRecoveryAction,
+  resolveWorkNotFoundRecoveryAction,
+} from '../../routing/runtimeNotFoundRecovery';
 import {
   ApiClientError,
   BACKGROUND_AUTH_REQUEST_OPTIONS,
@@ -907,6 +910,24 @@ function maybeAlertRuntimeNotFoundAndReturnHome() {
   return true;
 }
 
+function maybeAlertWorkNotFoundAndReturnHome() {
+  if (typeof window === 'undefined') {
+    return false;
+  }
+
+  const recoveryAction = resolveWorkNotFoundRecoveryAction(
+    window.location.pathname,
+  );
+  if (!recoveryAction) {
+    return false;
+  }
+
+  // 中文注释：直接打开公开详情或运行态深链失效时，确认提示后必须离开空详情页。
+  window.alert('作品不存在或已下架，将返回首页。');
+  pushAppHistoryPath(recoveryAction.nextPath);
+  return true;
+}
+
 function hasSeenPuzzleOnboarding() {
   if (typeof window === 'undefined') {
     return true;
@@ -4334,7 +4355,7 @@ export function PlatformEntryFlowShellImpl({
           setPublicWorkDetailError(null);
           setPlatformTab('home');
           setSelectionStage('platform');
-          if (!maybeAlertRuntimeNotFoundAndReturnHome()) {
+          if (!maybeAlertWorkNotFoundAndReturnHome()) {
             pushAppHistoryPath('/');
           }
           return false;
@@ -5836,7 +5857,7 @@ export function PlatformEntryFlowShellImpl({
           setPublicWorkDetailError(null);
           setPlatformTab('home');
           setSelectionStage('platform');
-          if (!maybeAlertRuntimeNotFoundAndReturnHome()) {
+          if (!maybeAlertWorkNotFoundAndReturnHome()) {
             pushAppHistoryPath('/');
           }
           return;
@@ -6057,7 +6078,7 @@ export function PlatformEntryFlowShellImpl({
           setPublicWorkDetailError(null);
           setPlatformTab('home');
           setSelectionStage('platform');
-          if (!maybeAlertRuntimeNotFoundAndReturnHome()) {
+          if (!maybeAlertWorkNotFoundAndReturnHome()) {
             pushAppHistoryPath('/');
           }
           return;
@@ -7387,6 +7408,23 @@ export function PlatformEntryFlowShellImpl({
         const user = await getPublicAuthUserByCode(normalizedKeyword);
         setSearchedPublicUser(user);
       } catch (error) {
+        if (selectionStage === 'work-detail') {
+          setSelectedPublicWorkDetail(null);
+          setSelectedDetailEntry(null);
+          setSelectedPuzzleDetail(null);
+          setPuzzleDetailReturnTarget(null);
+          setPuzzleRun(null);
+          setPuzzleRuntimeAuthMode('default');
+          setPuzzleError(null);
+          setPublicWorkDetailError(null);
+          setPlatformTab('home');
+          setSelectionStage('platform');
+          if (!maybeAlertWorkNotFoundAndReturnHome()) {
+            pushAppHistoryPath('/');
+          }
+          return;
+        }
+
         setPublicSearchError(
           resolveRpgCreationErrorMessage(error, '未找到对应的百梦号或作品号。'),
         );
@@ -7407,6 +7445,8 @@ export function PlatformEntryFlowShellImpl({
       refreshSquareHoleGallery,
       refreshVisualNovelGallery,
       squareHoleGalleryEntries,
+      selectionStage,
+      setPlatformTab,
       visualNovelGalleryEntries,
     ],
   );
@@ -8091,6 +8131,20 @@ export function PlatformEntryFlowShellImpl({
           </motion.div>
         )}
 
+        {selectionStage === 'work-detail' && !selectedPublicWorkDetail && (
+          <motion.div
+            key="platform-work-detail-empty"
+            initial={{ opacity: 0, y: 12 }}
+            animate={{ opacity: 1, y: 0 }}
+            exit={{ opacity: 0, y: -12 }}
+            className="flex h-full min-h-0 items-center justify-center"
+          >
+            <div className="platform-subpanel rounded-2xl px-5 py-4 text-sm text-[var(--platform-text-base)]">
+              {publicWorkDetailError || '正在读取作品详情...'}
+            </div>
+          </motion.div>
+        )}
+
         {selectionStage === 'work-detail' && selectedPublicWorkDetail && (
           <motion.div
             key="platform-work-detail"