The mail attachment viewer was simplified by removing an obsolete internal download handler. This helps keep the messaging experience easier to maintain without changing how business users work with attachments.

Task-2579306

This change improves the internal mail app test setup so tests no longer alter shared model definitions while running. It helps keep automated checks more reliable and reduces the risk of test-only side effects affecting development quality.

enterprise: https://github.com/odoo/enterprise/pull/25928

task-2792108

This update standardizes how records are searched by name across several Odoo Enterprise apps. It should make search behavior more consistent for users while simplifying future maintenance of these features.

Linked to https://github.com/odoo/odoo/pull/86588

User pictures in referral and subscription-related screens now use the shared avatar service, so a standard avatar appears when no personal photo is available. This creates a more consistent and complete experience across affected portal and employee-facing views.

Description of the issue/feature this PR addresses:
With the addition of the web/avatar API in odoo/odoo#64868, some enterprise modules had to change their web/image API call to web/avatar for consistency matters.

Current behavior before PR:
If the user had no image set, no avatar was shown in the portal subscriptions and lunch module.

Desired behavior after PR is merged:
Changes the picture URLs in subscription and lunch module to point to the new avatar API.

task-2404630

This update adjusts internal automated tests for the Documents-related apps to use a newer server setup method. It helps keep future development safer and more reliable without changing day-to-day user workflows.

community: https://github.com/odoo/odoo/pull/88083

task-2792108