新增模式状态管理，优化暂停/播放按钮逻辑，添加“下一步”按钮以支持手动模式。

components/pages/work-flow.tsx

@@ -10,7 +10,7 @@ import { MediaViewer } from "./work-flow/media-viewer";
 import { ThumbnailGrid } from "./work-flow/thumbnail-grid";
 import { useWorkflowData } from "./work-flow/use-workflow-data";
 import { usePlaybackControls } from "./work-flow/use-playback-controls";
-import { AlertCircle, RefreshCw, Pause, Play } from "lucide-react";
+import { AlertCircle, RefreshCw, Pause, Play, ChevronLast } from "lucide-react";
 import { motion } from "framer-motion";
 import { GlassIconButton } from '@/components/ui/glass-icon-button';
 
@@ -42,6 +42,7 @@ export default function WorkFlow() {
     setCurrentSketchIndex,
     retryLoadData,
     isPauseWorkFlow,
+    mode,
     setIsPauseWorkFlow,
   } = useWorkflowData();
 
@@ -214,14 +215,26 @@ export default function WorkFlow() {
         </div>
 
         {/* 暂停/播放按钮 */}
-        <div className="absolute right-12 bottom-12 z-[9999]">
+        {
+          currentStep !== '6' && (
+            <div className="absolute right-12 bottom-16 z-[9999] flex gap-4">
               <GlassIconButton
                 icon={isPauseWorkFlow ? Play : Pause}
                 size='lg'
                 tooltip={isPauseWorkFlow ? "Play" : "Pause"}
                 onClick={() => setIsPauseWorkFlow(!isPauseWorkFlow)}
               />
+              { mode !== 'auto' && (
+                <GlassIconButton
+                  icon={ChevronLast}
+                  size='lg'
+                  tooltip="Next"
+                />
+              )}
             </div>
+          )
+        }
+        
 
         {/* AI 建议栏 */}
         <ErrorBoundary>

components/pages/work-flow/use-workflow-data.tsx

@@ -75,6 +75,7 @@ export function useWorkflowData() {
   const [dataLoadError, setDataLoadError] = useState<string | null>(null);
   const [needStreamData, setNeedStreamData] = useState(false);
   const [isPauseWorkFlow, setIsPauseWorkFlow] = useState(false);
+  const [mode, setMode] = useState<'auto' | 'manual'>('manual');
 
   const dispatch = useAppDispatch();
   const { sketchCount, videoCount } = useAppSelector((state) => state.workflow);
@@ -576,6 +577,7 @@ export function useWorkflowData() {
     retryLoadData,
     handleManualPlay,
     isPauseWorkFlow,
+    mode,
     setIsPauseWorkFlow,
   };
 }