- Add migration 009: sourcing_type (manufactured/purchased), sourcing_link,
long_description, and standard_cost columns on items table
- Update Item struct, repository queries, and API handlers for new fields
- Add sourcing badge, long description block, standard cost, and sourcing
link display to item detail panel
- Add inline project tag editor in detail panel (add/remove via dropdown)
- Add new fields to create and edit modals
- Update CSV import/export for new columns
- Merge with auth CreatedBy/UpdatedBy changes from stash
fc0eb6d2be