Option to persist Smart Flow Mode across media queues

Feature description

Add an optional setting to automatically apply the last-used Smart Flow mode to newly-created media queues.

Problem solved

Users who consistently use the same Smart Flow mode currently need to manually re-enable it whenever a new queue is created.

For example, my typical workflow is:

Create a Radio Mix (AudioMuse AI)
Enable Transition Maestro (or Steady Vibes)
Listen

When I create another Radio Mix later, I generally want the same Smart Flow mode again, so having to reselect it each time introduces a small amount of repetitive friction.

Brought benefits

A possible implementation could be similar to Settings > Playback > Retain player state.

When enabled, Symfonium would remember the last-used Smart Flow mode and automatically apply it to newly-created queues.

Default behaviour would remain unchanged for existing users.

Device type

Phone

Additional description and context

My listening habits have evolved to rely heavily on AudioMuse AI, Radio Mixes and Smart Flow. In practice, Smart Flow has become part of the listening workflow rather than an occasional queue modification.

Related discussions:

Reddit discussion: https://www.reddit.com/r/Symfonium/comments/1jk7tbe/is_there_a_way_to_make_smart_queueflow_enabled_by/
Android Auto / Radio Mix feature request: Its another Android Auto Radio Mix request (with Audiomuse) - #2 by njodoin

I searched existing feature requests

on