feat: 优化编辑器 UI 和文件名显示，支持全屏编辑模式

backend/app/services/common.go

@@ -248,7 +248,8 @@ func (s *common) CompleteUpload(ctx context.Context, userID int64, form *common_
 			ObjectKey: objectKey,
 			Hash:      hash,
 			Meta: types.NewJSONType(fields.MediaAssetMeta{
-				Size: totalSize,
+				Filename: meta.Filename,
+				Size:     totalSize,
 			}),
 		}
 	}
@@ -384,7 +385,8 @@ func (s *common) Upload(
 			ObjectKey: objectKey,
 			Hash:      hash,
 			Meta: types.NewJSONType(fields.MediaAssetMeta{
-				Size: size,
+				Filename: file.Filename,
+				Size:     size,
 			}),
 		}
 	}
@@ -398,10 +400,14 @@ func (s *common) Upload(
 
 func (s *common) composeUploadResult(asset *models.MediaAsset) *common_dto.UploadResult {
 	url := s.GetAssetURL(asset.ObjectKey)
-	filename := filepath.Base(asset.ObjectKey)
-	// Try to get original filename if stored? Currently objectKey has UUID prefix.
-	// We can store original filename in Meta if needed. For now, just return valid result.
-	// Meta is JSONType wrapper.
+	filename := asset.Meta.Data().Filename
+	if filename == "" {
+		filename = filepath.Base(asset.ObjectKey)
+		// Try to strip UUID prefix (36 chars + 1 underscore = 37)
+		if len(filename) > 37 && filename[36] == '_' {
+			filename = filename[37:]
+		}
+	}
 	size := asset.Meta.Data().Size
 
 	return &common_dto.UploadResult{

backend/app/services/creator.go

@@ -370,7 +370,18 @@ func (s *creator) GetContent(ctx context.Context, userID int64, id string) (*cre
 
 	for _, ca := range c.ContentAssets {
 		if ca.Asset != nil {
-			sizeBytes := ca.Asset.Meta.Data().Size
+			meta := ca.Asset.Meta.Data()
+			name := meta.Filename
+			if name == "" {
+				// Fallback: strip UUID prefix (36 chars + 1 underscore = 37)
+				if len(ca.Asset.ObjectKey) > 37 && ca.Asset.ObjectKey[36] == '_' {
+					name = ca.Asset.ObjectKey[37:]
+				} else {
+					name = ca.Asset.ObjectKey
+				}
+			}
+
+			sizeBytes := meta.Size
 			sizeMB := float64(sizeBytes) / 1024.0 / 1024.0
 			sizeStr := cast.ToString(float64(int(sizeMB*100))/100.0) + " MB"
 
@@ -379,7 +390,7 @@ func (s *creator) GetContent(ctx context.Context, userID int64, id string) (*cre
 				Role: string(ca.Role),
 				Type: string(ca.Asset.Type),
 				URL:  Common.GetAssetURL(ca.Asset.ObjectKey),
-				Name: ca.Asset.ObjectKey, // Simple fallback
+				Name: name,
 				Size: sizeStr,
 				Sort: int(ca.Sort),
 			})

backend/database/fields/media_assets.go

@@ -2,6 +2,7 @@ package fields
 
 // MediaAssetMeta 媒体资源元数据
 type MediaAssetMeta struct {
+	Filename string  `json:"filename,omitempty"`
 	Hash     string  `json:"hash,omitempty"`
 	Duration float64 `json:"duration,omitempty"` // 秒
 	Width    int     `json:"width,omitempty"`

frontend/portal/src/layout/LayoutCreator.vue

@@ -1,8 +1,8 @@
 <template>
-   <div class="min-h-screen flex flex-col bg-slate-50">
-      <TopNavbar />
-      <main class="flex-grow pt-16">
-         <div class="mx-auto flex gap-8 h-full" :class="isFullWidth ? 'max-w-none px-0' : 'max-w-screen-xl py-8'">
+   <div class="flex flex-col bg-slate-50" :class="isFullWidth ? 'h-screen overflow-hidden' : 'min-h-screen'">
+      <TopNavbar v-if="!isFullWidth" />
+      <main class="flex-grow flex flex-col min-h-0" :class="!isFullWidth ? 'pt-16' : ''">
+         <div class="mx-auto flex gap-8 w-full min-h-0 flex-grow" :class="isFullWidth ? 'max-w-none px-0' : 'max-w-screen-xl py-8'">
             <!-- Creator Sidebar (Dark Theme) -->
             <aside class="w-[280px] flex-shrink-0 hidden lg:block" v-if="!isFullWidth">
                <div
@@ -66,12 +66,12 @@
             </aside>
 
             <!-- Main Content -->
-            <div class="flex-grow min-w-0">
+            <div class="flex-grow min-w-0 h-full">
                <router-view />
             </div>
          </div>
       </main>
-      <AppFooter />
+      <AppFooter v-if="!isFullWidth" />
    </div>
 </template>