fix(cleaner): use copy+unlink for video rename to avoid Windows EBUSY

Windows fs.rename fails when ffmpeg still holds the file handle. Use
copyFileSync + unlinkSync with retry (up to 10 attempts, 1s interval)
to work around the file lock.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main/services/erp/cleaner.ts

@@ -1294,8 +1294,24 @@ export class CleanerService {
             const finalPath = fs.existsSync(orderVideoPath)
               ? path.join(this.videoDir!, `${expectedOrderNumber}_${Date.now()}${ext}`)
               : orderVideoPath
-            fs.renameSync(originalPath, finalPath)
-            log.debug('[视频录制] 视频已重命名', { from: originalPath, to: finalPath })
+            // Copy + unlink instead of rename — Windows EBUSY if ffmpeg still holds the file
+            await new Promise<void>((resolve, reject) => {
+              const tryRename = (attempt: number) => {
+                try {
+                  fs.copyFileSync(originalPath, finalPath)
+                  fs.unlinkSync(originalPath)
+                  log.debug('[视频录制] 视频已重命名', { from: originalPath, to: finalPath })
+                  resolve()
+                } catch (err) {
+                  if (attempt < 10) {
+                    setTimeout(() => tryRename(attempt + 1), 1000)
+                  } else {
+                    reject(err)
+                  }
+                }
+              }
+              tryRename(0)
+            })
           }
         } catch (videoError) {
           log.warn('[视频录制] 重命名视频失败', {