This pull request adds proof-of-concept technical documentation for core product and inventory areas, including examples for the stock module. It helps teams understand and maintain these Odoo apps more easily, with no direct change expected for day-to-day users.

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This update makes a small internal adjustment to the Mail/Discuss interface so it aligns with requirements for a future framework upgrade. It helps keep the messaging experience reliable and easier to maintain, with no expected change for day-to-day users.

In preparation to using OWL v2 in discuss code

Task-2695901

The bank account connection setup wizard has been simplified by removing outdated fields that were no longer used. This reduces internal clutter and helps keep the accounting synchronization flow easier to maintain without changing the user experience.

Remove two fields that were made deprecated and are no longer
used in the account link wizard.

task id #2691087