new modes

server.py

@@ -36,6 +36,7 @@ ALLOWED_CHARS  = string.ascii_letters + string.digits + '_-'
 DIAL_CODES = {
 	'*420#':  'trippy_toggle',       # toggles UI trippy mode globally for everyone
 	'*1337#': 'rainbow_nick_toggle', # toggles the dialer's own rainbow nick
+	'*101#':  'knock',               # plays a knock sound for everyone in the room
 }
 DIAL_MAX_LEN = 32
 
@@ -432,6 +433,9 @@ async def handle_message(client_id: str, data: dict):
 			trippy_mode = not trippy_mode
 			logging.info(f'[{client_id}] Trippy mode -> {trippy_mode}')
 			await broadcast_all({'type': 'trippy_status', 'enabled': trippy_mode})
+		elif action == 'knock':
+			logging.info(f'[{client_id}] Knock')
+			await broadcast_all({'type': 'play_sound', 'sound': 'knock'})
 		elif action == 'rainbow_nick_toggle':
 			# Per-user toggle: only flips the dialer's own nick. Broadcast so every
 			# other client renders the rainbow effect on this user in their list.

static/js/client.js

@@ -491,6 +491,10 @@ function handleSignal(data) {
 			setTrippyMode(!!data.enabled);
 			break;
 
+		case 'play_sound':
+			playSound(data.sound);
+			break;
+
 		case 'nick_status':
 			// Per-user rainbow nick toggle. Server tells us when ANY user (including
 			// us) flips theirs - we just mirror it into local state and re-render.

static/js/notifications.js

@@ -81,8 +81,9 @@ function getSoundContext() {
 // Preloaded audio elements for join/leave wav files. Reusing one element per
 // sound keeps decode/load off the hot path.
 const SOUND_FILES = {
-	join: '/static/sounds/gta.wav',
-	leave: '/static/sounds/htp.wav'
+	join:  '/static/sounds/gta.wav',
+	leave: '/static/sounds/htp.wav',
+	knock: '/static/sounds/knock.mp3'
 };
 const soundElements = {};
 
@@ -100,7 +101,7 @@ function playSound(type) {
 
 	console.log('[Sound] Playing:', type);
 
-	if (type === 'join' || type === 'leave') {
+	if (SOUND_FILES[type]) {
 		try {
 			const a = getSoundElement(type);
 			a.currentTime = 0;