The planning calendar and related portal views were rebuilt using a newer internal interaction approach. This keeps the same business workflows while making the screens easier to maintain and reducing duplicated display logic across planning, forecasting, and sales planning.

continue working on the refactoring introduced by this commit: [1]

[1]: https://github.com/odoo/odoo/commit/dd13994674d4ef4683f5a4d46a1f604650cfb92b
task-4367641