2a74c8e114
- Add FastNAMHost.set_block_size() — reloads current model with new block_size, keeping the engine in sync with JACK's period - Wire into POST /api/audio/profile so NAM engine restarts with correct frame count when switching between standard/low/stable - Prevents sample-alignment drift when JACK period changes but NAM engine stays at old block_size (was causing passthrough)