Ramp sound FX parameters over a time on the audio clock

A pitch sweep counted down in On update or On fixed update runs in
game time, while the sound runs on the clock of the audio device. A
short sound magnifies any offset between the two, so the sweep came
out different on every play and most of all on the first.

- Set sound FX parameters has a new input time in seconds. The values
  run evenly to their target in that time, scheduled on the audio
  clock with linearRampToValueAtTime or exponentialRampToValueAtTime.
- Evenly in their own unit: a pitch in semitones and a gain in
  decibels, an EQ band and a Mix share linearly in their value.
- A time of 0 or below keeps the quick glide of about 0.1 s.
- Each change starts from where the voice is now. Whatever was still
  planned is dropped, so a change never queues behind an older one.
  Firefox lacks cancelAndHoldAtTime, there the value is held by hand.
- A voice still waiting on its bytes starts a timed change with the
  sound, so the whole sweep is heard.

Tests:
- node-catalog: time is handed on, a time below 0 is a quick glide.
- sound-library: semitones and decibels ramp in their own steps, a
  timed change on a waiting voice starts with the sound.
- sound-library + node-catalog + soundfx: 419 tests, green.
- e2e 34 on melektaus-atx: ALL PASSED, 31 checks. A 2 s ramp from
  depth 7 to -5 read speed 0.979, 0.926 and 0.778 half a second on.
- Counter-check: folding a timed change on a waiting voice into its
  start values fails the new test.
- The gate did not run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/runtime/systems/behaviorContext.ts

@@ -172,7 +172,7 @@ export function behaviorContext(
       const file = assetId === '' ? '' : soundFileOf(project, assetId);
       if (assetId === '' || file) run.audio.stop(file);
     },
-    tuneSound: (voice, fxParams) => run.audio.tune(voice, fxParams),
+    tuneSound: (voice, fxParams, time) => run.audio.tune(voice, fxParams, time),
     spawn: (assetId, position, parent) => world.spawn(assetId, position, resolve(parent) ?? null),
     addJoint: (assetId, owner, connected, at) => {
       const on = resolve(owner);