This update renames an internal JavaScript message model in the enterprise mail module to avoid confusion with similarly named backend models. The change helps developers maintain the messaging code more reliably without changing the user experience.

Rename javascript model `mail.message` to `Message` in order to distinguish javascript models from python models.

Part of task-2701674.
Community: https://github.com/odoo/odoo/pull/81366

This update renames an internal live chat support component to better separate website messaging code from backend business models. It does not change customer-facing behavior, but helps developers maintain the helpdesk live chat feature more reliably.

Rename javascript model `mail.thread_viewer` to `ThreadViewer` in order to distinguish javascript models from python models.

Part of task-2701674.

This update renames internal JavaScript components used by the mail chatter area to better distinguish them from server-side models. It helps developers maintain the messaging features more safely without changing the user experience.

Rename javascript model `mail.chatter` to `Chatter` in order to distinguish javascript models from python models.

Part of task-2701674.
Community: https://github.com/odoo/odoo/pull/81325

The helpdesk live chat code was updated to use a clearer internal name for its messaging setup component. This helps developers distinguish website chat code from backend models, reducing confusion during future maintenance without changing how users experience live chat.

Rename javascript model `mail.messaging_initializer` to `MessagingInitializer` in order to distinguish javascript models from python models.

Part of task-2701674.
Community: https://github.com/odoo/odoo/pull/81387

The Approvals app received an internal naming update to make its JavaScript approval component easier to distinguish from the server-side approval model. This helps developers maintain the feature more safely without changing the user experience.

Rename javascript model `approvals.approval` to `Approval` in order to distinguish javascript model from python model.

Part of task-2701674.

This update renames an internal messaging component used in enterprise features to better distinguish browser-side code from server-side models. It helps developers maintain related customer communication features more safely, with no expected change for end users.

Rename javascript model `mail.thread` to `Thread` in order to
distinguish javascript models from python models.

Part of task-2701674.
 \* = account_followup, website_helpdesk_livechat
Community: https://github.com/odoo/odoo/pull/81433

This update renames an internal activity record used by Approvals, Sign, and VoIP to avoid confusion with a similarly named backend record. It should make future maintenance safer without changing how users work with these apps.

Rename javascript model `mail.activity` to `Activity` in order to distinguish javascript model from python model.

Part of task-2701674.
Community: https://github.com/odoo/odoo/pull/80555