DELETE /v3/action/event_file/{id} — removes hosted_file_link, optionally
cleans up physical file + hosted_file record if orphaned (rm_orphan=True
default), then deletes the event_file row. Closes the gap left by the V3
CRUD migration which silently dropped hosted_file cleanup.
GET /v3/action/hosted_file/orphan_scan — returns hosted_file rows with no
hosted_file_link entries (DB orphans, paginated), plus optional disk scan
for physical files with no DB record. Needed for admin cleanup of the
backlog accumulated during the broken-delete period.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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