Tags menu on the left panel

Is your feature request related to a problem? Please describe.

I use tags extensively to organize my tasks. I use tags with prefixes to indicate task status, category, place, project and so on. It's very hard to navigate tasks without global task menu.

Describe the solution you'd like

I would like to see global task menu over all task lists on he left panel, above task lists. Tags must be sorted. Menu can be collapsible.

Describe alternatives you've considered

I've considered using lists as tags but some popular task managers out there (tasks.org for example) had hard times moving tasks between lists so I've stick with tags. And use my phone to manage tasks. Only workflow I can accomplish with nextcloud tasks web version is search by task name and edit.

Additional context

No response

Start by locating the left-panel task-list navigation and the existing tag rendering or filtering entry points. Review how tags are currently exposed across task lists, then define the sorted, collapsible global menu behavior and verify it works across all task lists; the issue names no specific files or tests.