Odoo Release Updates

[FIX] point_of_sale: serial refund

[IMP] l10n_tr_nilvera_*: add tax office in e-dispatch XML

[IMP] html_builder, website: use Bootstrap shadow class in shadow option

[IMP] website: add controls to edit Bootstrap shadow classes

[FIX] mail: backport s_showcase separator fix from web_editor

[FIX] sale_gelato: remove 'upgrade_boolean' from Gelato setting

[IMP] hr_homeworking: user fields

[IMP] core: adapt gc settings for python 3.13-14

[IMP] mail: use discuss.channel model in getRecentChatPartnerIds

[FIX] l10n_es_edi_verifactu: remove `RedirectWarnings` causing the cron to fail

[REM] l10n_fr_pos_cert: remove obsolete migration deprecated POS sequence fields

[IMP] pos_hr: prevent not logged in employee to go to backend

[FIX] base,hr: adapt image size to field count

[IMP] account: Normalize factors in _distribute_delta_amounts_smoothly

[FIX] payment: provider should be published

[FIX] hr_work_entry: Fix work entry type domain in multiselect

[FIX] payment_paypal: show paypal button on mobile checkout

[FIX] website: prevent URL customization when no editable slug in the URL

[IMP] hr: user employee fields

[FIX] sale: make product configurator more responsive

[IMP] project: kanban substasks redesign

[IMP] tests: make test post install by default

[REF] web: Hoot - rename 'exact' to 'count'

[IMP] hr_holidays: include all valid public holidays

[REF] iot_drivers: move system helpers to system.py

[IMP] website_profile: user writeable fields

[FIX] website_sale: fix images in dynamic catalog block

[IMP] web: cache identical name_search calls in M2X

[IMP] base: user fields

[FIX] stock{,_picking_batch}: correctly remove packages