fix(generation): exclude asset refs from image upload limit

backend/apps/generation/views.py

@@ -359,8 +359,12 @@ def video_generate_view(request):
             }, status=status.HTTP_429_TOO_MANY_REQUESTS)
 
         # 构建参考素材
-        # 火山限制最多 9 张参考图片
-        image_count = sum(1 for r in references if r.get('type', 'image') == 'image')
+        # 直接上传的参考图片最多 9 张；素材库 asset:// 引用不计入该上传槽位限制。
+        image_count = sum(
+            1 for r in references
+            if r.get('type', 'image') == 'image'
+            and not str(r.get('url', '')).startswith('asset://')
+        )
         if image_count > 9:
             return Response({
                 'error': 'too_many_references',

web/src/components/PromptInput.tsx

@@ -416,14 +416,15 @@ export function PromptInput() {
   }, [extractText]);
 
   const insertAssetMention = useCallback((asset: AssetSearchResult) => {
-    // Instant check: count limit
+    // Instant check: count limit. Image assets from the library do not consume
+    // the 9 direct-upload image slots.
     const stats = editorRef.current ? parseAssetMentionsFromDOM(editorRef.current) : { counts: { image: 0, video: 0, audio: 0 }, durations: { video: 0, audio: 0 } };
     const refs = useInputBarStore.getState().references;
     const refCounts = { image: 0, video: 0, audio: 0 };
     refs.forEach((r) => refCounts[r.type]++);
     const typeKey = asset.asset_type === 'Video' ? 'video' : asset.asset_type === 'Audio' ? 'audio' : 'image';
-    const maxMap = { image: 9, video: 3, audio: 3 };
-    if (refCounts[typeKey] + stats.counts[typeKey] >= maxMap[typeKey]) {
+    const maxMap = { video: 3, audio: 3 };
+    if (typeKey !== 'image' && refCounts[typeKey] + stats.counts[typeKey] >= maxMap[typeKey]) {
       const typeLabel = asset.asset_type === 'Video' ? '视频' : asset.asset_type === 'Audio' ? '音频' : '图片';
       showToast(`${typeLabel}已达上限`);
       return;

web/src/store/inputBar.ts

@@ -261,13 +261,10 @@ export const useInputBarStore = create<InputBarState>((set, get) => ({
   prevReferences: [],
   addReferences: (files) => {
     const state = get();
-    // Count existing references by type + merge @ asset mentions
+    // Count direct uploaded references by type. Asset library mentions do not
+    // consume direct upload slots.
     const counts = { image: 0, video: 0, audio: 0 };
     for (const ref of state.references) counts[ref.type]++;
-    const { counts: assetCounts } = parseAssetMentions(state.editorHtml);
-    counts.image += assetCounts.image;
-    counts.video += assetCounts.video;
-    counts.audio += assetCounts.audio;
 
     // Separate images (sync) from audio/video (need async duration check)
     const imageFiles: File[] = [];
@@ -559,8 +556,7 @@ async function _validateAndAddImages(files: File[]) {
 
     // Passed — add to store + upload
     fileCounter++;
-    const existingSameType = state.references.filter(r => r.type === 'image').length
-      + (state.assetMentions || []).filter((m: Record<string, string>) => m.type === 'image').length;
+    const existingSameType = state.references.filter(r => r.type === 'image').length;
     const refId = `ref_${fileCounter}`;
     const newRef: UploadedFile = {
       id: refId,
@@ -659,8 +655,7 @@ async function _validateAndAddMedia(files: File[]) {
     // Passed all checks — add to store
     fileCounter++;
     const labelPrefix = type === 'video' ? '视频' : '音频';
-    const existingSameType = state.references.filter(r => r.type === type).length
-      + (state.assetMentions || []).filter((m: Record<string, string>) => m.type === type).length;
+    const existingSameType = state.references.filter(r => r.type === type).length;
     const refId = `ref_${fileCounter}`;
     const newRef: UploadedFile = {
       id: refId,