Move filters and sorting into a right sidebar

Problem Statement

Filters and sort live in the top bar above the tasks. To change anything you have to click the picker, pick the value, close it, and repeat for every adjustment. Tweaking filters during work becomes a constant clicking dance.

Proposed Solution

Move filters and sort into a right sidebar:

• Open the sidebar once, all controls stay visible
• Adjust filters / sort directly without reopening pickers
• Close the sidebar when you're done

Alternative Solutions

N/A

Relevant Context

The more filters you use at once, the more painful the current flow gets.
Linear example
Image

Does this feature align with Kaneo's focus on simplicity?

Yes - same "less friction" spirit. Thanks for the great tool! 🙏

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Originally requested by @voxquietam on 2026-05-11. Original GitHub request #1255.