fix: detect followed playlists correctly in header

Load owner+subscriber playlists, track all playlist IDs for follow-state resolution, and keep audio ring buffer at 32k as requested.

rust/src/player/output.rs

@@ -10,9 +10,7 @@ use std::sync::{
 };
 use symphonia::core::audio::AudioBufferRef;
 
-// Bigger output buffer gives the decoder/network pipeline more headroom,
-// reducing audible underruns on transient CPU/network stalls.
-const RING_BUFFER_SIZE: usize = 256 * 1024;
+const RING_BUFFER_SIZE: usize = 32 * 1024;
 
 pub struct AudioOutput {
     _ring: SpscRb<f32>,