Add shipping and customs fields to products

[Bouni]

Summary

Products can now store the data you need for shipping and customs paperwork: HS code, country of origin, dimensions and weight. Invoice items keep a copy of these values taken when the invoice is saved. That keeps issued invoices stable and lets API users build customs documents or shipping labels from an invoice.

Changes

Products

• New optional fields:
  • hsCode: HS code
  • countryOfOrigin: ISO 3166-1 alpha-2, stored in uppercase
  • lengthMm, widthMm, heightMm: dimensions in mm
  • weightG: weight in g
• How input is cleaned up:
  • Empty strings, invalid numbers and negative numbers are stored as NULL.
  • On update, sending null clears a field. Leaving a field out keeps its current value.
• A new Shipping & Customs section on the product create, edit and detail pages. The products list and the invoice forms are unchanged.
• New UI labels translated in all locales (de, en, es-ar, es-co, nl, pt-br, tr).

Invoice items

• Each invoice item stores a copy of its product's shipping and customs values:
  • Creating an invoice or saving a draft copies the product's current values.
  • Editing an issued invoice (protection override) keeps the values the items already had, so issued invoices don't change.
  • Duplicating an invoice uses the current product values. If the product no longer exists, it keeps the original item's values.
• GET /api/v1/invoices/:id returns all six fields on every item, as do the create, update and duplicate responses. Fields that aren't set are null.
• Public share links do not include these fields.

Database

• New nullable columns on products and invoice_items, added with addColumnIfMissing and no default value.
• Existing products and invoices are not modified; their new fields are just empty or null.
• Fresh installs get the products columns directly in the CREATE TABLE statements.

Testing

• Create a product with all shipping fields → the detail page shows them
• Edit the product and clear a field → the field is removed
• Country code de is saved as DE, and negative or invalid numbers are ignored
• Create an invoice with that product → the API returns the copied values on the item
• Change the product, then edit the issued invoice → the item keeps the old values
• Duplicate the invoice → the new draft has the current product values
• An existing database migrates cleanly, and old invoices return null for the new fields

🤖 Generated with Claude Code

[Bouni]

@kittendevv anything I can do for you to get this merged?

[kittendevv]

Was in the proccess of merging this but i forgor mb