fix Roman numeral permanence during search — use unfiltered index not filtered position

@@ -96,20 +96,23 @@9696           }9797         >9898           <For each={filteredNotes()}>99-            {(note, i) => {99+            {(note) => {100+              // Permanent index from the unfiltered list — never changes during search101+              const permanentIndex = () => props.notes.findIndex((n) => n.id === note.id);102+              const expandingIdx = () => props.notes.findIndex((n) => n.id === props.expandingNoteId);100103               const expanding = () => props.expandingNoteId && props.expandingNoteId !== note.id;101104               const expandingNote = () => props.expandingNoteId === note.id;102105               return (103106                 <NoteRow104107                   note={note}105-                  index={i()}108+                  index={permanentIndex()}106109                   searchQuery={searchQuery()}107110                   onTap={(n, el) => props.onOpenNote(n, el)}108111                   onDelete={handleDelete}109112                   onArchive={handleArchive}110113                   fadingClass={111114                     expanding()112-                      ? (i() < (filteredNotes().findIndex(n => n.id === props.expandingNoteId))115+                      ? (permanentIndex() < expandingIdx()113116                           ? "is-expanding-away is-expanding-away-up"114117                           : "is-expanding-away is-expanding-away-down")115118                       : expandingNote()