Three follow-ups from Task 15 code review:
1. (Important) The aggregated files API now LEFT JOINs against
documents to surface signedFromDocumentId per file row. The
"view signing details" button on EntityFolderView's Files
section now passes the workflow id to SigningDetailsDialog
instead of the file id. Previously the button always 404'd
and the dialog hung in the loading state. Drops the v1
filename-prefix heuristic.
2. (Minor) Drop dead initialTab prop + DocumentsHubTab import —
leftover from the pre-refactor tab strip.
3. (Minor) FlatFolderListing remounts on folder switch via a key
prop, restoring the pre-refactor typeFilter reset behaviour.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>