A Pinned Dashboard Widget slot with configurable size (expandable to full available width)

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Is your feature request related to a problem? Please describe.
I want to support custom workflows starting with the dashboard. The size of the dashboard widgets is limited to 320px by 480px, which is small. Users can also "lose" the site-specific dashboard widgets by removing or moving the widget. This leads to support requests to "get the widget(s) back".

Complex custom code is required to initialize a new account with role-based dashboard widgets (i.e. admin, funder, funding candidate), if configured with the following:

occ config:app:set dashboard layout --value="site_widget_1,site_widget_2,site_widget_n,recommendations,spreed,mail,calendar"

Describe the solution you'd like
Having a slot for pinned dashboard components of any size.

Describe alternatives you've considered
While it's possible to mitigate by using multiple dashboard widgets and/or opening modal dialogs, being able to utilize the full width of the dashboard UI would be a better user experience.

• Multiple Dashboard widgets to split up site-specific dashboard workflow UI
• Buttons/Links that open a Modal Dialog, providing more screen real estate

For role-based dashboard widgets, auth branching logic can be added to each site-specific dashboard widget. If we use multiple dashboard widgets, we could have SiteDashboardWidget1, SiteDashboardWidget2...SiteDashboardWidgetN all have an auth if/else statement to present different views for the different user roles.

Start by tracing the dashboard layout configured through occ config:app:set dashboard layout and how dashboard widgets are placed and sized. Define the pinned slot behavior, configurable sizing, and full-width expansion before identifying the affected dashboard entry points and a way to verify role-based layouts and widget persistence.