- Remove shared memo-metadata folder
- Move metadata display components (AttachmentList, LocationDisplay, RelationList) to MemoView/components/metadata
- Move attachment types and utilities (LocalFile, AttachmentItem, toAttachmentItems) to MemoEditor/types/attachment
- Simplify AttachmentList and AttachmentCard to work directly with Attachment proto
- Update all imports across MemoEditor and MemoView components
- Better separation of concerns: MemoView handles display, MemoEditor handles local files + attachments