The VoIP system now uses a dedicated component to manage phone service registration with the underlying calling library. This makes the calling setup easier to maintain and helps support more reliable future improvements without changing the user workflow.

Introduce the Registerer model that wraps the Registerer class of the SIP.js library.

Task-2896691.

This update simplifies the internal code behind the message attachment viewer and related form display areas. It reduces Enterprise-specific customizations and prepares the attachment preview experience to become easier to maintain and extend across more editions.

Part of task-2871070

This update reorganizes how message views are tracked inside Odoo's enterprise mail module. It reduces internal complexity, making future maintenance safer without introducing a visible change for everyday users.

This allows to remove the AND/OR mix from message view identifying fields.

Part of task-2741982

This update reorganizes how enterprise mail message views are connected internally. It supports cleaner message list handling and helps keep the messaging experience easier to maintain without changing the user-facing workflow.

…stView

Part of task-2741982

**Before this commit:** When we split the pdf documents, rule buttons are not working from there. **After this commit:** Rule buttons will work properly from the pdf splitter. **Task**-2885866 Forward-Port-Of: odoo/enterprise#28676

**Before this commit:**

When we split the pdf documents, rule buttons are not working from there.

**After this commit:**

Rule buttons will work properly from the pdf splitter.

**Task**-2885866

Forward-Port-Of: odoo/enterprise#28676