Background file loads for session, presentation, and presenter were using the
default hidden='not_hidden', so hidden files never reached Dexie. The Manage
Files liveQuery reads straight from Dexie, making hidden files completely
invisible until the Refresh button was clicked (which already used hidden='all').
The Launcher is unaffected — it has always had a render-time guard that hides
files with event_file_obj.hide unless show_content__hidden_files is enabled.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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