feat(ui): 封面形象余额不足时不弹 toast；声音复刻弹窗增加积分消耗提示

tauri-app/src/pages/ContentManagement/CoverAvatarLibrary.tsx

@@ -104,8 +104,7 @@ export default function CoverAvatarLibrary() {
     } catch (err) {
       const msg = err instanceof Error ? err.message : '上传失败';
       if (msg.includes('积分不足')) {
-        progress.error('积分不足');
-        toast.error('积分不足，每次上传封面形象消耗 10 积分，请先充值');
+        progress.error('积分不足，请先充值');
       } else {
         progress.error(msg);
         toast.error(msg);

tauri-app/src/pages/ContentManagement/VoiceMaterialLibrary.tsx

@@ -392,15 +392,20 @@ export default function VoiceMaterialLibrary() {
             </div>
           </div>
 
-          <div style={{ display: 'flex', gap: 12, justifyContent: 'flex-end' }}>
-            <button className="btn btn-secondary" onClick={() => setUploadModalOpen(false)}>取消</button>
-            <button
-              className="btn btn-primary"
-              onClick={handleUpload}
-              disabled={!uploadName.trim() || !selectedFile}
-            >
-              开始复刻
-            </button>
+          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
+            <span style={{ fontSize: 'var(--font-xs)', color: 'var(--text-tertiary)' }}>
+              每次复刻消耗 <strong style={{ color: 'var(--primary)' }}>200</strong> 积分
+            </span>
+            <div style={{ display: 'flex', gap: 12 }}>
+              <button className="btn btn-secondary" onClick={() => setUploadModalOpen(false)}>取消</button>
+              <button
+                className="btn btn-primary"
+                onClick={handleUpload}
+                disabled={!uploadName.trim() || !selectedFile}
+              >
+                开始复刻
+              </button>
+            </div>
           </div>
         </div>
       </Modal>