type: voice, Requirement.value, playable resource cards

A voice requirement records in the browser and ships PCM to the relay
as one binary frame (voice.js, same mount/stop contract as gesture);
its value becomes {key, digest, duration_ms}. Requirement.value
presets a field and, on a dynamic page, takes the URL segment - so
value: "{key}" tells the voice field where to record. A url resource
source takes the segment too. Resource items with an https `audio`
field render an <audio> player. The gesture widget reports picks to
the relay for ranking.

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

gesture.js

@@ -274,6 +274,10 @@ class GestureWidget {
             this.selected = null;
         } else {
             this.selected = { key, path: JSON.parse(thumb.dataset.path), distance: Number(thumb.dataset.distance) };
+            // The relay counts picks per place for ranking.
+            if (this.ws && this.ws.readyState === WebSocket.OPEN && this.ownKey) {
+                this.ws.send(JSON.stringify({ type: 'select', key, from: this.ownKey, distance: this.selected.distance }));
+            }
         }
         this.applySelection();
     }