This update refreshes internal timing helper code to remove a deprecated dependency, keeping the system aligned with the newer OWL framework. It should not change day-to-day user behavior, but reduces future maintenance risk across several business apps.

- community: https://github.com/odoo/odoo/pull/279121

See commit messages for details.
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The Knowledge app's properties panel was updated to use the newer interface expected by the platform. This keeps the panel behavior stable during future upgrades while preserving the existing user experience.

Replaced `useLayoutEffect` with `useEffect` (from `@odoo/owl`) because
`useLayoutEffect` is deprecated in OWL3.

`useEffect` was chosen as the replacement because the original effect
reacted to dependency changes (`this.props.record.resId` and
`this.hasProperties`) — pattern 3 in the OWL3 migration guide. A
`void this.props.record.resId;` statement was added at the top of the
callback to subscribe to the plain prop dep that is not auto-tracked.

The `useLayoutEffect` refactored in this PR has test coverage — below
are some tests that failed when the effect was commented out:
- @knowledge/options_dropdown/Toggle Properties Panel (desktop)
- @knowledge/options_dropdown/Toggle Properties Panel (Mobile)
see commented-out runbot build: https://runbot.odoo.com/runbot/batch/2596677/build/114854261

Note: `useEffect` runs asynchronously after paint, whereas
`useLayoutEffect` ran synchronously after DOM mutations. The properties
panel visibility logic may require synchronous updates; post-merge
monitoring of the knowledge test suite is advised.

The Gantt view was updated as part of Odoo's move to the newer Owl framework. This is an internal modernization that helps keep planning views reliable and ready for future platform changes, with no expected change for day-to-day users.

As part of the Owl 3 migration, replace onWillUpdateProps hook with the appropriate Owl 3 alternatives.

`Why use bus ?`
Replaces `onWillUpdateProps(this.computeDerivedParams)`. The model isn't reactive, so we recompute the derived state on its synchronous "update" event. This ensures it's ready before the next render. Effects run too late.

This update modernizes how several Odoo screens refresh their interface content, removing an outdated internal mechanism. It helps keep dropdowns and embedded editor components more reliable and easier to maintain without changing day-to-day workflows.

- community: https://github.com/odoo/odoo/pull/276842

See commit messages for details.
---
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

Web Studio’s automated tests were updated to align with the newer Owl 3 framework. This is an internal maintenance change that helps keep future development and upgrades stable without changing day-to-day user behavior.

As part of the Owl 3 migration, replace deprecated onWillRender hooks with the appropriate Owl 3 alternatives.

Community: https://github.com/odoo/odoo/pull/280936

The Knowledge calendar view was updated to use a newer underlying approach that remains compatible with the next version of Odoo's interface framework. A new automated test was added to help ensure this calendar behavior continues to work correctly.

Replaced `useLayoutEffect` with `useEffect` because `useLayoutEffect`
is deprecated in OWL3.

The useLayoutEffect refactored in this PR had NO test coverage,
see commented-out runbot build: https://runbot.odoo.com/runbot/batch/2596755/build/114855786

In this case I wrote a test to make sure the refactoring works (also tested in UI)

community PR: https://github.com/odoo/odoo/pull/281002