Keys hjkl are used as directions in filter input

Thanks for your tool! I'm currently checking different taskwarrior tools and this one is the most promising to me.

As the title says, I can't type the letters hjkl in the filter input because they are used as directional keys.

Start by running twkb and inspecting the filter input handling alongside the directional-key handling. The fix is done when the letters h, j, k, and l can be entered in the filter without triggering directional navigation.

Written by the indexing model from the issue text.