项目界面无法跳转的问题修复

让 /project 复用创作主页桌面导航壳

为项目页补充保留左侧导航并切回推荐页的回归测试

同步项目入口文档约束

src/components/platform-entry/PlatformEntryFlowShellImpl.tsx

@@ -15251,10 +15251,18 @@ export function PlatformEntryFlowShellImpl({
       />
     </Suspense>
   );
+  const projectGalleryContent = (
+    <Suspense fallback={<LazyPanelFallback label="正在加载项目..." />}>
+      <ProjectGalleryView onOpenProject={openEditorProject} />
+    </Suspense>
+  );
   const handlePlatformHomeTabChange = useCallback(
     (tab: PlatformHomeTab) => {
       platformBootstrap.setPlatformTab(tab);
-      if (selectionStage === 'creation-home' && tab !== 'create') {
+      if (
+        (selectionStage === 'creation-home' && tab !== 'create') ||
+        selectionStage === 'project'
+      ) {
         setSelectionStage('platform');
         pushAppHistoryPath('/');
       }
@@ -15264,11 +15272,14 @@ export function PlatformEntryFlowShellImpl({
   const platformHomeView = (
     <PlatformEntryHomeView
       activeTab={
-        selectionStage === 'creation-home'
+        selectionStage === 'creation-home' || selectionStage === 'project'
           ? 'create'
           : platformBootstrap.platformTab
       }
-      allowHiddenActiveTab={selectionStage === 'creation-home'}
+      activeDesktopNavTab={selectionStage === 'project' ? 'projects' : undefined}
+      allowHiddenActiveTab={
+        selectionStage === 'creation-home' || selectionStage === 'project'
+      }
       onTabChange={handlePlatformHomeTabChange}
       hasSavedGame={hasSavedGame}
       savedSnapshot={savedSnapshot}
@@ -15298,9 +15309,11 @@ export function PlatformEntryFlowShellImpl({
           : platformBootstrap.dashboardError
       }
       createTabContent={
-        selectionStage === 'creation-home'
-          ? creationLandingContent
-          : creationStartContent
+        selectionStage === 'project'
+          ? projectGalleryContent
+          : selectionStage === 'creation-home'
+            ? creationLandingContent
+            : creationStartContent
       }
       draftTabContent={draftHubContent}
       onContinueGame={handleContinueGame}
@@ -15408,21 +15421,6 @@ export function PlatformEntryFlowShellImpl({
             </Suspense>
           </motion.div>
         )}
-        {selectionStage === 'project' && (
-          <motion.div
-            key="project-gallery"
-            initial={{ opacity: 0, y: 12 }}
-            animate={{ opacity: 1, y: 0 }}
-            exit={{ opacity: 0, y: -12 }}
-            className="project-gallery-stage-shell flex h-full min-h-0 min-w-0 flex-col overflow-hidden"
-          >
-            <Suspense fallback={<LazyPanelFallback label="正在加载项目..." />}>
-              <ProjectGalleryView
-                onOpenProject={openEditorProject}
-              />
-            </Suspense>
-          </motion.div>
-        )}
         {selectionStage === 'creation-home' && (
           <motion.div
             key="creation-home"
@@ -15434,6 +15432,17 @@ export function PlatformEntryFlowShellImpl({
             {platformHomeView}
           </motion.div>
         )}
+        {selectionStage === 'project' && (
+          <motion.div
+            key="project-gallery"
+            initial={{ opacity: 0, y: 12 }}
+            animate={{ opacity: 1, y: 0 }}
+            exit={{ opacity: 0, y: -12 }}
+            className="creation-home-stage flex h-full min-h-0 min-w-0 flex-col overflow-hidden"
+          >
+            {platformHomeView}
+          </motion.div>
+        )}
         {selectionStage === 'platform' && (
           <motion.div
             key="platform-home"