fix(voice): amplitude meter was masked by the dross-rec keyframe animation (2.14.1)

CSS animations override normal declarations — the old box-shadow pulse painted
over the level-driven shadow. .metered now disables the fallback pulse; added
sqrt gain so speech registers visibly.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

public/components/dross_bubble.js

@@ -95,12 +95,18 @@ export async function renderDrossBubble() {
         const analyser = actx.createAnalyser(); analyser.fftSize = 256;
         src.connect(analyser);
         const buf = new Uint8Array(analyser.frequencyBinCount);
+        mic.classList.add('metered'); // disables the fallback pulse; amplitude takes over
         const tick = () => {
-          if (!recording) { actx.close().catch(() => {}); mic.style.removeProperty('--voicelevel'); return; }
+          if (!recording) {
+            actx.close().catch(() => {});
+            mic.style.removeProperty('--voicelevel'); mic.classList.remove('metered');
+            return;
+          }
           analyser.getByteTimeDomainData(buf);
           let peak = 0;
           for (const v of buf) peak = Math.max(peak, Math.abs(v - 128));
-          mic.style.setProperty('--voicelevel', (peak / 128).toFixed(3));
+          // sqrt curve + gain: normal speech peaks ~0.1–0.4 raw, which read as barely-alive
+          mic.style.setProperty('--voicelevel', Math.min(1, Math.sqrt(peak / 48)).toFixed(3));
           requestAnimationFrame(tick);
         };
         tick();