[19.0][MIG] sale_sourced_by_line

[JasminSForgeFlow]

Scope reduced: most of the feature is now in core

Odoo 19 sale_stock already provides the bulk of what this module used to add:

18.0 module behaviour	19.0
warehouse_id on sale.order.line	core — sale_stock/models/sale_order_line.py (computed, stored)
Stock moves / pickings sourced from the line's warehouse	core — _prepare_procurement_values passes self.warehouse_id
One delivery order per warehouse	core — falls out of the stock rules, no grouping code needed
_get_procurement_group_key() / _prepare_procurement_group_vals()	removed — procurement.group no longer exists in 19.0 (replaced by stock.reference), so there is nothing to override

What remains, and is what this module now does:

• make sale.order.line.warehouse_id user-editable (core declares it compute-only, derived from the line routes);
• keep a manually set line warehouse from being overwritten — _compute_warehouse_id only recomputes lines where the field is empty;
• expose the field on the sale order line list and form;
• relabel sale.order.warehouse_id as Default Warehouse with its help text.

The end-user behaviour is unchanged from 18.0.

Changes

• __manifest__.py: version 19.0.1.0.0; dependency sale_procurement_group_by_line → sale_stock. The former has no 19.0 branch and its purpose (one procurement group per line) is obsolete now that procurement.group is gone.
• model/sale.py:
  • dropped the three procurement-group related methods (see table above);
  • sale.order.line.warehouse_id redefined with readonly=False;
  • _compute_warehouse_id @api.depends: route_id → route_ids, and product_packaging_id dropped (product.packaging was merged into uom.uom in 19.0);
  • dropped the legacy readonly=True on sale.order.warehouse_id. Core declares that field with precompute=True, and models.create() discards values for precompute + readonly fields (odoo/orm/models.py), so keeping readonly=True would silently swallow warehouse_id passed at sale order creation. The field stays labelled Default Warehouse.
• view/sale_view.xml:
  • line form xpath anchor route_id → route_ids;
  • removed the {'default_warehouse_id': warehouse_id} context on order_line. It is redundant — core computes and stores the line warehouse from the order — and it would both override core's route-based warehouse resolution and clobber the context attribute core sets on that field.
• tests/: rewritten. No demo data on 19.0, so all fixtures are created in setUpClass; assertions moved from procurement groups to picking count and move_ids.warehouse_id. Added a test asserting a line-level warehouse survives a change of the order warehouse.

@ForgeFlow

[AaronHForgeFlow]

Hi @JasminSForgeFlow we have to make this module to depend on sale_stock_reference_by_line and adapt the methods to work like it was with the previous dependency.