[IMP] stock_ux: add the transfer's scheduled date on move lines

[mav-adhoc]

Problem

stock.move.line.scheduled_date is related to move_id.date, and stock.move.date only holds the scheduled date until the move is done — _action_done overwrites it with the processing date, as its own help states. Moves History (Inventory > Reporting) lists done lines, so filtering, grouping or sorting by "Scheduled Date" there silently uses the effective date, and it contradicts the "Scheduled Date" of the transfer, which does survive the validation (stock.picking._compute_scheduled_date ignores done moves).

Steps to reproduce

1. Create a receipt scheduled tomorrow and validate it today.
2. Inventory > Reporting > Moves History, group by "Scheduled Date".
3. The line falls under today instead of tomorrow, while the transfer form still shows tomorrow.

Why a new field instead of fixing the native one

I proposed changing the native field upstream in odoo/odoo#283087. Odoo declined it for 19.0 to avoid changing an existing field's value mid-version, and master then removed stock.move.line.scheduled_date altogether (odoo/odoo#276163, 90654e4c74e, date becomes a stored related on move_id.date). So there is no upstream fix coming to 19.0, and overriding the native related here would change, in every database, the value people may already be grouping by — and it would resurrect a field that no longer exists in the next version.

Adding a separate field keeps both properties: nothing changes for the native one, and this one survives the upgrade because it is ours.

Changes

• picking_scheduled_date, related to picking_id.scheduled_date.
• Available as a group by in the move lines search view, and as an optional (hidden by default) column of the report list.
• Lines without a transfer are empty on the new field, and keep showing whatever the native field shows.

Version

The manifest is bumped in the PR (19.0.1.17.0), a new field plus view changes need the module to be updated on deploy — so this one merges with nobump.

Internal reference: https://www.adhoc.inc/odoo/helpdesk.ticket/125611

[roboadhoc]

[Copilot]

Pull request overview

Este PR busca preservar la “fecha programada” real del traspaso (picking) en el histórico de movimientos/líneas, evitando que al validar un picking las líneas terminen agrupándose por la fecha de proceso (cuando stock.move.date es sobrescrito al hacer _action_done).

Changes:

• Agrega en stock.move.line el campo picking_scheduled_date relacionado a picking_id.scheduled_date.
• Expone el nuevo campo como group by en la búsqueda de líneas y como columna opcional en la lista del reporte.
• Incorpora un test que valida que la fecha del picking “sobrevive” a la validación mientras que la fecha nativa ya no lo hace.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
stock_ux/models/stock_move_line.py	Nuevo campo picking_scheduled_date relacionado al scheduled del picking.
stock_ux/views/stock_move_line_views.xml	Agrega group-by y columna opcional para el nuevo campo en vistas de líneas.
stock_ux/tests/test_move_line_picking_scheduled_date.py	Test de regresión para validar el comportamiento post-validación.
stock_ux/tests/init.py	Incluye el nuevo archivo de tests en el paquete.

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