- Add POLineItem.name column; migrate existing description→name; description is now optional
- NameCell component: name input with fuzzy product search, description input stacked below
- Read-only view shows name prominently, description in subdued text below
- All server actions (create, edit, manager edit, import) updated to read/write name
- ParsedImportLine.description renamed to .name throughout import parser and form
- Seed data updated; CLAUDE.md added
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>