[ADD] search_ux: search products and partners by keywords and configurable fields

[mav-adhoc]

Sustainable replacement for base_name_search_improved (OCA), on products and partners.

Task: https://www.adhoc.inc/odoo/all-tasks/12857/all-tasks/72472

What it does out of the box

• A "search keywords" field (internal, trigram indexed) on product.template and res.partner, for aliases, nicknames and trade names.
• That field already included in the search of those two models. Nothing else enabled.

How it hooks

Model	Hook
product.template, product.product	name_search: calls super() and completes the suggestion list only if the native cascade did not fill limit
res.partner	_search_display_name: adds the fields to the same declarative domain, no extra query

No _inherit = "base", no _register_hook, no monkeypatching of the registry. Only the two models inherit the mixin, explicitly.

Multi word: the term is split and all words must appear, in any order and in any configured field, built as a single domain resolved in a single query.

What the consultant configures

Settings > Technical > "Extended Search", per model: fields to include (model fields, Studio fields and forward paths like product_tmpl_id.my_field), related sources for products (lots/serials, vendor code, packaging barcodes), minimum characters before triggering (default 3), and archiving to turn it off completely.

It rejects on save, with an explanation: html fields, binary/attachment fields, non stored fields, wrong paths, group restricted fields and more than 5 fields per model (search_ux.max_fields).

Customization

A customer module adds its own source by inheriting a single extension point, without forking:

def _get_extra_search_domains(self, term):
    domains = super()._get_extra_search_domains(term)
    domains.append(Domain("id", "in",
        self.env["my.model"]._search([("code", "ilike", term)]).subselect("product_id")))
    return domains

Test plan

13 tests, green on a 19.0 database with only search_ux installed:

odoo.tests.stats: search_ux: 15 tests 0.21s 278 queries
odoo.tests.result: 0 failed, 0 error(s) of 13 tests

They discriminate: neutralizing _get_extra_search_domains makes 4 of them fail (keywords on product, on template, on partner, multi word and minimum characters).

Covered: keywords on the three models, native behaviour untouched without configuration, the extended search not running when the native one fills the limit, multi word in a single query, minimum characters, turning it off, the received domain being honoured, the extension point, and every rejected configuration.

Not included on purpose

Typo correction, lot reservation when the product is found by serial, and searching inside html descriptions.

[roboadhoc]