[#70778] Primerize Backlogs Project Settings

[myabc]

Ticket

https://community.openproject.org/work_packages/70778

What are you trying to accomplish?

Updates the design of Backlogs Project Settings.

• Changes the page header text to "Backlogs" for consistency with other pages.
• Moves "Rebuild positions" under the page's action menu.
• Renders Definition of Done options as a Select Panel.

(out-of-scope for #21723)

Screenshots

Before	After

What approach did you choose and why?

Merge checklist

• Added/updated tests
• Added/updated documentation in Lookbook (patterns, previews, etc)
• Tested major browsers (Chrome, Firefox, Edge, ...)

[github-actions]

Caution

The provided work package version does not match the core version

Details:

• Work package URL: https://community.openproject.org/work_packages/70778
• Work package version: not set
• Core version: 17.2.0

Please make sure that:

• The work package version OR your pull request target branch is correct

[HDinger]

We discussed this week, that the SelectPanel is not a component we want to use in normal forms as the button as form element, is visually weird. Instead, we afterwards decided to use the normal autocompleter for cases like this

[Copilot]

Pull request overview

Updates the Backlogs project settings page UI to align with Primerized OpenProject patterns and improve consistency with other settings pages.

Changes:

• Renames the page header/breadcrumb title to “Backlogs” and moves “Rebuild positions” into the PageHeader action menu.
• Replaces the status “Definition of Done” checkbox table with a Primer SelectPanel-based form.
• Adds supporting i18n strings for SelectPanel titles/captions/dynamic labels.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
modules/backlogs/config/locales/en.yml	Adds new translations for the Definition of Done caption and SelectPanel labels.
modules/backlogs/app/views/projects/settings/backlogs/show.html.erb	Primerizes the page header/actions and swaps the legacy checkbox table for a Primer form + ApplicationForm component.
modules/backlogs/app/forms/projects/settings/backlogs_settings_form.rb	Introduces an ApplicationForm rendering the Definition of Done SelectPanel and submit button.
modules/backlogs/app/controllers/projects/settings/backlogs_controller.rb	Simplifies update logic to mass-assign done_status_ids via expected params.

[Copilot]

button_arguments uses aria: { label: ... }, but other Primer::OpenProject::PageHeader#with_action_menu usages pass the attribute as "aria-label": ... (e.g., app/views/projects/settings/versions/show.html.erb:43-46). Using the nested aria hash here may not set the aria-label attribute on the kebab button, which would hurt accessibility and can break consistency with the component API.

Suggested change

	aria: { label: t(:label_more) }
	"aria-label": t(:label_more)

[Copilot]

This change replaces the status checkbox table with a SelectPanel-driven form submission, but existing Backlogs project settings feature coverage still assumes checkboxes (e.g., it uses check status.name / have_checked_field). Please update/add a spec to cover selecting done statuses via the new SelectPanel UI and persisting them (including clearing selections).