Accounting fiscal position rules can now handle postal code ranges that include letters, not just numbers. This improves localization support for countries such as Canada, where postal codes are alphanumeric, helping taxes and fiscal rules apply more accurately.

Task: https://www.odoo.com/web#id=1948120&action=333&active_id=131&model=project.task&view_type=form&menu_id=4720
pad: https://pad.odoo.com/p/r.89d59b0033b0f57e50e3b9e53adc2082

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:

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Customers buying courses can now choose between adding a course to their cart or buying it immediately when that option is enabled. The change also prevents course-selling features from being automatically reinstalled, giving businesses more control over whether they sell eLearning content online.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




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Decimal precision handling is now built into Odoo’s base system instead of relying on a separate module. This simplifies maintenance and lets core models such as currencies use shared precision rules while keeping older custom code working with warnings.

The decimal precision feature makes sense to be an ORM feature, no need to be
in a specific module.
The limitation was also that models like res.currency were not able to use a
decimal precision as this was raised at #19668 

Keep a backward-compatible signature with a warning.
    
Task id: 48198
Closes odoo/odoo#25467

Product attribute lines are now created in batches, reducing the time needed to process large numbers of products. This improves performance for product catalog setup and updates, with reported processing time reduced by about 30% in the tested scenario.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




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When a serial number is entered for a tracked product in stock quantity or inventory adjustment screens, the quantity is now automatically set to one. This reduces manual entry and helps prevent quantity mistakes for individually tracked items.

On quant view, when you set serial number for a tracked product, its quantity is automatically set on 1.

Task #2025397

EasyPost shipping requests now include the product HS code when available. This helps improve customs documentation accuracy for international deliveries and reduces the risk of shipping delays caused by missing classification details.

Before the fix, we didn't send the hs code to the easy post API. 
Added the HS code to easypost.
Task id: 1964479