macOS:
- Replace deprecated NSSavePanel.begin(completionHandler:) with async begin() API
- The old API has been deprecated since macOS 12 and may silently fail on macOS 26
- Added diagnostic logging throughout recording completion flow
iOS:
- Added diagnostic logging to track onRecordingSaved → pendingExportURL → sheet chain
- Logs file existence, size after recording completes
Diagnostic logging added to help verify the save dialog flow:
- macOS: file size check, showSaveDialog entry, NSSavePanel response
- iOS: recordStream output verification, onRecordingSaved call, sheet binding activation
yumoqing
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