Restructured the bookshelf filter form to be a proper visible form
instead of individual inputs with HTMX attributes pointing to a
hidden form.
Changes:
- Wrapped all filter inputs in a visible <form id="filter-form">
with hx-get="/api/media-items/search" and hx-target="#books-grid"
- Removed redundant HTMX attributes from individual inputs since
they're now part of the form
- Added "Search" submit button to explicitly trigger form submission
- Moved hidden pagination state inputs (limit, offset) inside the form
- Preserved all existing functionality: autocomplete, fuzzy search,
saved filters, clear filters button
- Added checked attribute to has_cover checkbox for default state
This change fixes the architectural issue where filter inputs were
outside the form and relied on hx-include, which was fragile and
made form handling complex. The new structure is more maintainable
and follows standard HTML form patterns.
The form now properly includes all filter parameters when submitted,
ensuring that search, filters, and pagination work correctly together.