Bump to v2.2.0: fix warning/bubble sounds, add klaxon, refresh docs

- index.html: fix playWarningSound (440→550 Hz, louder), fix playBubbleSound
  (audible volumes/durations), add looping klaxon sound (sawtooth wah-wah),
  stopKlaxon() on tap and state clear, bump VERSION to v2.2.0
- kao_tui.py: add klaxon to SOUNDS list, drop notify duration 5→2s for
  faster iteration; also include improved post() error reporting
- CLAUDE.md: add kao_tui.py to file structure, fix personality table
  (remove ˙▿˙ row not in aggregator), add klaxon to sound list
- README.md: add klaxon to sound list, update counts
- openapi.yaml: bump version to 2.2.0, add klaxon to sound enum

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

index.html

@@ -217,7 +217,7 @@
 			const emoteEl = document.getElementById("emote");
 			const messageEl = document.getElementById("message");
 			const POLL_INTERVAL = 2000;
-			const VERSION = "v2.1.0";
+			const VERSION = "v2.2.0";
 
 			// Sound system
 			let audioCtx = null;
@@ -254,9 +254,9 @@
 			}
 
 			function playWarningSound() {
-				// Soft double-beep
-				playTone(440, 0.15);
-				setTimeout(() => playTone(440, 0.15), 180);
+				// Two-tone warning beep - differentiated pitches
+				playTone(440, 0.2, "sine", 0.18);
+				setTimeout(() => playTone(550, 0.2, "sine", 0.18), 220);
 			}
 
 			function playCriticalSound() {
@@ -334,8 +334,8 @@
 				playTone(1047, 0.15, "sine", 0.1);
 			}
 			function playBubbleSound() {
-				playTone(400, 0.06, "sine", 0.06);
-				setTimeout(() => playTone(600, 0.04, "sine", 0.04), 40);
+				playTone(400, 0.15, "sine", 0.10);
+				setTimeout(() => playTone(650, 0.12, "sine", 0.08), 100);
 			}
 			function playFanfareSound() {
 				playTone(523, 0.1, "sine", 0.1);
@@ -364,9 +364,28 @@
 				}
 			}
 
+			// Klaxon — looping wah-wah horn, loops until manually stopped
+			let klaxonInterval = null;
+			function playKlaxonTick() {
+				playTone(500, 0.22, "sawtooth", 0.22);
+				setTimeout(() => playTone(380, 0.22, "sawtooth", 0.22), 230);
+			}
+			function startKlaxon() {
+				if (klaxonInterval) return;
+				playKlaxonTick();
+				klaxonInterval = setInterval(playKlaxonTick, 470);
+			}
+			function stopKlaxon() {
+				if (klaxonInterval) {
+					clearInterval(klaxonInterval);
+					klaxonInterval = null;
+				}
+			}
+
 			// Play sound by name
 			function playSoundByName(name) {
-				if (name === "alarm") { startAlarm(); return; }
+				if (name === "alarm")  { startAlarm();  return; }
+				if (name === "klaxon") { startKlaxon(); return; }
 				const sounds = {
 					chime: playChimeSound,
 					alert: playAlertSound,
@@ -403,7 +422,8 @@
 					playSoundByName(customSound);
 					lastCustomSound = customSound;
 				} else if (!customSound) {
-					stopAlarm();          // stop any looping alarm
+					stopAlarm();          // stop any looping sounds
+					stopKlaxon();
 					lastCustomSound = null;
 				}
 
@@ -434,7 +454,8 @@
 
 			// Handle tap - enable sound and show reaction
 			document.body.addEventListener("click", () => {
-				stopAlarm();  // stop any looping alarm
+				stopAlarm();   // stop any looping sounds
+				stopKlaxon();
 				// Enable sound on first tap (browser autoplay policy)
 				if (!soundEnabled) {
 					soundEnabled = true;