- database.rs: add has_active_capture_jobs(), list_orphaned_blob_rows(),
all_referenced_file_relpaths(), delete_orphaned_blob_rows()
- routes.rs: GET/DELETE /api/archives/:id/blob-cleanup (ROLE_ADMIN)
- GET returns {orphaned_blob_rows, deletable_files, total_bytes}
- DELETE has two active-capture guards (before and after disk walk)
to prevent deleting files mid-capture; walks raw/ and raw_tweets/
- Referenced set = entry_artifacts.relpath ∪ live blobs' raw_relpath,
so a file is never deleted if any artifact still points at its path
- api.js: scanOrphanBlobs(), deleteOrphanBlobs()
- App.jsx: pass archiveId to SettingsView; add 'storage' to SETTINGS_TABS
so /settings/storage survives refresh/back navigation
- SettingsView.jsx: new Storage tab (admin-only) with idle→scanning→
scanned→deleting→done/error state machine; shows file/record counts
and human-readable byte sizes before a btn-danger confirm
Tests (14 new, 248 total passing):
- database.rs: has_active_capture_jobs for pending/running/completed,
list_orphaned_blob_rows, all_referenced_file_relpaths edge cases,
delete_orphaned_blob_rows preserves referenced rows
- routes.rs: auth (401), active-capture 409 on GET and DELETE,
end-to-end delete preserving referenced file and removing orphan
blob file + extra disk-only file
