element_manage_event_file_li_all.svelte — also derives context_session_type_code
via Dexie chain (event_presentation → session, or event_presenter → presentation →
session) and passes it to element_manage_event_file_li. Fixes the button not showing
when viewing a presenter's files from the session view.
element_manage_event_file_li_direct.svelte — extends the Dexie chain to also handle
event_session (direct lookup) and event_presentation, not just event_presenter.
Both: correct API URL to /v3/hosted_file/ per backend agent's examples.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
bf94e0dee9