account_invoice_line_sale_line_position

Purpose

Expose sale order line positions on customer invoices for display and reporting.

Features

account.move: Adds a computed flag indicating whether any invoice line has a linked sale order position.
account.move.line: Builds a combined position label from related sale order lines for product invoice entries.
invoicing UI: Shows the sale order position alongside products on invoice line forms and list grids.
accounting reports: Prints the sale order position column on invoice PDFs when positions are available.