Add Runn-style allocation menu actions and multi-select.

Simplify allocation popover to match Runn horizontal layout.

Fix allocation popover layout so labels and units are fully visible.

Fix clicking allocation pills to edit instead of creating new schedule.

Fix allocation popover inputs and keep open after save for delete.

Open effort popover when clicking saved allocation bars.

Rebuild allocation popover with Runn-style effort and repeat.

Add drag-to-create allocations on the Projects planner timeline.