**#541 — File downloads broken in PWA standalone mode**
Replace getAuthUrl + window.open pattern with blob-based fetch using
credentials:include. The old approach minted a 60s single-use ephemeral
token then called window.open, which handed the URL to the system browser
on Android/iOS — losing the PWA cookie jar and producing "invalid or
expired token". The new approach fetches the file directly inside the
PWA WebView as a blob URL, so no auth handoff occurs.
New helper client/src/utils/fileDownload.ts with downloadFile and openFile.
Updated FileManager, ReservationsPanel, ReservationModal, PlaceInspector,
CollabNotes.
Security hardening in fileDownload.ts:
- assertRelativeUrl() guard prevents credentials being sent to external hosts
- openFile() checks blob.type against a safe-inline allowlist; HTML, SVG and
other script-capable MIME types are forced to download instead of being
opened inline, preventing same-origin XSS via blob URLs
- resp.ok check covers all non-2xx responses, not just 401
**#505 — PWA offline session lost on reload**
Wrap authStore with Zustand persist middleware, serializing only
{user, isAuthenticated} to localStorage key trek_auth_snapshot.
maps_api_key is intentionally excluded from the snapshot.
On cold start with no network: persist hydrates isAuthenticated:true,
App.tsx clears isLoading and calls loadUser({silent:true}), ProtectedRoute
renders the dashboard immediately. The network error from loadUser leaves
isAuthenticated intact so no login redirect occurs.
On 401 or logout: store state is cleared, persist writes
{isAuthenticated:false} — stale snapshot does not grant offline access
after session expiry.
Add remark-breaks plugin so single newlines in note content render
as <br> instead of being collapsed by Markdown. Applies to both
the card preview and the expanded view.
Reset authUrl to empty string before fetching the new authenticated URL so
the previous photo is never rendered during the async gap. Show a spinner
while the new URL is loading.
The expanded/fullscreen note modal was missing the attachments section entirely,
so users had no way to access files beyond the 1-2 shown in the compact card view.
Added a full, untruncated attachments grid below the markdown content in the modal.
- Fix attachment URLs to use /api/trips/:id/files/:id/download instead
of /uploads/files/... which was unconditionally blocked with 401
- Use getAuthUrl() with ephemeral tokens for displaying attachments and
opening them in a new tab (images, PDFs, documents)
- Replace htmlFor/id label pattern with ref.current.click() for the
file picker button in NoteFormModal — fixes file not being added to
pending list on first note creation
- Add integration tests COLLAB-028 to COLLAB-031 covering URL format,
listing URLs, ephemeral token download, and unauthenticated 401
- Suppress note context menu when canEditDays is false instead of
showing empty menu
- Untie poll voting from collab_edit — voting is participation, not
editing; any trip member can vote
- Restore NoteFormModal props (note, tripId) to required; remove
leftover canUploadFiles prop in favor of direct zustand hook
jubnl