Fixes#773: isValidBackupFilename regex anchored to ^backup- rejected all
auto-backup-* filenames, causing 400 on download/restore/delete. Broadened
to ^(?:auto-)?backup-.
Fixes#774: three regressions in the trip Files tab —
- openFile import shadowed by a local function of the same name inside
FileManager; PDF preview modal was calling the local with a URL string,
corrupting state and crashing on the second click (mime_type read on
undefined). Fixed by aliasing the import as openFileUrl.
- GET /:id/download used a bespoke authenticateDownload that checked only
Bearer header and ?token= query param, ignoring the trek_session cookie.
After the JWT-to-cookie migration the client sends cookies only, so every
download silently 401-ed. Extended authenticateDownload to accept req and
check cookie → Bearer → query token in priority order.
- files.download and files.openError translation keys were missing from all
15 locale files; t() was returning the raw key as a truthy string,
defeating the || 'Download' fallback.
5eaf7492dc