Refactor keyboard input sound implementation in useLoginSounds.ts

- Updated the keyboard typing sound function to use a synthesized click instead of preloaded audio files, enhancing performance and responsiveness.
- Removed the previous audio pool logic for keyboard input sounds to streamline the code.
- Ensured audio context is properly managed to prevent playback issues.

neode-ui/src/composables/useLoginSounds.ts

@@ -172,27 +172,31 @@ export function playTypingTick() {
   a.play().catch(() => {})
 }
 
-/** Keyboard input sound - plays on any character typed in inputs. Separate from typing tick/intro typing. */
-let keyboardInputPool: HTMLAudioElement[] = []
-const KEYBOARD_INPUT_POOL_SIZE = 5
-
-function getKeyboardInputSound(): HTMLAudioElement {
-  if (keyboardInputPool.length === 0) {
-    for (let i = 0; i < KEYBOARD_INPUT_POOL_SIZE; i++) {
-      const a = new Audio('/assets/audio/typing.mp3')
-      a.volume = 0.5
-      keyboardInputPool.push(a)
-    }
-  }
-  const a = keyboardInputPool.shift()!
-  keyboardInputPool.push(a)
-  return a
-}
-
+/** Keyboard input sound - short synthesized click per key. Does NOT use typing.mp3 or intro-typing.mp3. */
 export function playKeyboardTypingSound() {
-  const a = getKeyboardInputSound()
-  a.currentTime = 0
-  a.play().catch(() => {})
+  const ctx = getContext()
+  if (!ctx) return
+
+  try {
+    if (ctx.state === 'suspended') ctx.resume()
+  } catch {
+    return
+  }
+
+  const t = ctx.currentTime
+  const osc = ctx.createOscillator()
+  const gain = ctx.createGain()
+
+  osc.type = 'sine'
+  osc.frequency.setValueAtTime(1200, t)
+  gain.gain.setValueAtTime(0, t)
+  gain.gain.linearRampToValueAtTime(0.06, t + 0.002)
+  gain.gain.exponentialRampToValueAtTime(0.001, t + 0.04)
+
+  osc.connect(gain)
+  gain.connect(ctx.destination)
+  osc.start(t)
+  osc.stop(t + 0.04)
 }
 
 /** Gaming-style boot thud - soft impact when dashboard loads */