a1a3bd1b2b
- Fix recursive CTE: add missing RECURSIVE keyword in move_to_trash and restore_from_trash SQL queries (relation 'descendants' does not exist) - Fix folder deletion: delete descendant files before folder to avoid 'duplicate key violates unique constraint idx_files_unique_name_at_root' - Simplify trash model: only mark the folder as trashed, not child files (implicit trash via parent) - Update trash_items view: filter to show only top-level trashed items - Update schema.sql: change files.folder_id FK from ON DELETE SET NULL to ON DELETE CASCADE - Fix trash view icons: folders and files now show correct visual icons (folder-icon, pdf-icon, etc.) in trash view - Frontend refactoring: extract inline CSS/JS from admin.html and profile.html into dedicated external files - Frontend cleanup: replace all inline style attributes with CSS classes - Frontend cleanup: replace style.display JS - Fix recursive CTE: add missing RECURSIVE keyword in move_to_trash and restore_from_trash SQL queries (relation 'descendants' d