Transient network errors on first upload attempt showed ugly
'Network error: TypeError: Load failed' messages in the queue.
These are normal on iOS Safari and auto-resolve on retry.
- Clean up sync error messages (friendly text, no raw error types)
- Only show error messages in queue after 3+ retries or failed status
- Only show retry counter after 3+ retries
- First couple of retries are silent - just shows Pending status
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>