Add a single-page multi-step setup wizard that guides new users
through initial configuration:
Step 1 - Admin Registration: Creates the first user (auto-admin)
using the existing POST /api/auth/register endpoint, with
real-time password validation and confirmation matching.
Step 2 - Library Creation: Create one or more libraries (Ebooks,
Audiobooks, Comics, Manga) using POST /api/libraries. Libraries
list updates inline as they're added.
Step 3 - Folder Configuration: Add filesystem folders to each
library using the existing GET /api/libraries/browse endpoint for
a visual directory browser. Folders are attached via POST
/api/libraries/:id/folders.
Step 4 - Initial Scan: Triggers a manual scan of all libraries via
POST /api/libraries/scan with real-time progress polling using the
existing scan status endpoint.
On completion, the wizard calls PUT /api/setup/complete and sets the
selectedLibrary cookie to the first library's UUID, ensuring the
dashboard loads with populated content instead of an empty 'All
Libraries' view. Handles the edge case where a stale JWT from a
previous database instance triggers an 'already exists' error by
auto-advancing to step 2.
The wizard reuses all existing API calls, Alpine.js utilities, and
form validation functions — no backend logic was duplicated.