Reduce buffering: 250ms DJ chunks, 1024-chunk preroll, X-Accel-Buffering header

script.js

@@ -2211,10 +2211,12 @@ function startBroadcast() {
             }
         };
 
-        // 1000ms chunks: Dramatically reduces CPU interrupts on low-RAM machines
+        // 250ms chunks: More frequent smaller chunks reduces stall gaps on weak connections.
+        // A 1-second chunk creates a 1-second starvation gap if the network hiccups;
+        // 250ms chunks keep the server fed 4x more often.
         // Validate state before starting
         if (mediaRecorder.state === 'inactive') {
-            mediaRecorder.start(1000);
+            mediaRecorder.start(250);
             streamProcessor = mediaRecorder;
             console.log('[OK] MediaRecorder started in state:', mediaRecorder.state);
         } else {

server.py

@@ -67,7 +67,7 @@ _mp3_lock = threading.Lock()
 _transcoder_bytes_out = 0
 _transcoder_last_error = None
 _last_audio_chunk_ts = 0.0
-_mp3_preroll = collections.deque(maxlen=512)
+_mp3_preroll = collections.deque(maxlen=1024)  # ~83s at 96kbps for fast reconnect buffer fill
 
 
 def _start_transcoder_if_needed(is_mp3_input=False):
@@ -486,6 +486,7 @@ def setup_shared_routes(app, index_file='index.html'):
             'X-Content-Type-Options': 'nosniff',
             'Access-Control-Allow-Origin': '*',
             'Icy-Name': 'TechDJ Live',
+            'X-Accel-Buffering': 'no',  # Tell nginx/Cloudflare not to buffer this stream
         })
 
     @app.route('/stream_debug')