Add a persistent clip library with folders, optional password, and hidden-thumbnail glow.

Generated videos save into a chosen folder, sensitive clips skip thumbnails until played, and Docker writes the catalog to a Coolify volume.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/api/library/folders/[id].delete.ts

@@ -0,0 +1,5 @@
+export default defineEventHandler(async (event) => {
+  assertLibraryAccess(event)
+  const id = getRouterParam(event, 'id')
+  return await deleteFolder(String(id))
+})